A farmer is to plant rice in a rectangular field 30 meters by 40 meters. He started on the edge and plant around the perimeter. How wide a strip around he plant for each side in order to do half the work? A. 5 m B. 2.5 m C. 3 m D. 5.5 m Ans. A If a mechanical engineer borrowed money from his girl friend with simple interest of 12%, determine the present worth of P75,000.00 which is due at the end of 7 months. A. P72,200.20 B. P70,200.20 C. P73,900.50 D. P70,093.20 Ans. D An Electrical Engineer obtained a loan of P50,000 at the rate of 6% compounded annually in order to repair his mistress’ house. How much must the Electrical Engineer pay monthly to amortize the loan within a period of ten years? A. P605.20 B. P550.90 C. P505.90 D. P508.90 Ans. B What is the value of 1 radian in degrees? A. 89.55o B. 57.3o C. 60.3o D. 45.58o Ans. B How many degrees are 4800 mills? A. 180o B. 315o C. 90o D. 270o Ans. D A force of 200 lb acts on a block at an angle of 28o with respect to horizontal. The block is pushed 2 ft horizontally. Find the work done by this force. A. 480 J B. 408 J C. 840 J D. 804 J Ans. A A truck starts from rest and moves with a constant acceleration of 6 m/s2. Find the speed of the truck after 4 seconds. A. 18 m/s B. 28 m/s C. 24 m/s D. 35 m/s Ans. C A car starts from rest and has a constant acceleration of 3 ft/s2. Determine the average velocity during the first 10 seconds of motion. A. 15 fps B. 20 fps C. 12 fps D. 18 fps Ans. A Determine the value of each interior angle of a regular pentagon. A. 108o B. 120o C. 98o D. 135o Ans. A Determine the first derivative with respect to x of the functions g(x) = √10 - 35 A. ¾ B. 0 C. 4(9)3/4 D. 35 Ans. B Determine the slope of a curve y = -x2 at the point (2, 3). A. 4 B. -4 C. 2 D. -2 Ans. B What is the sum of the roots of the equation 2x2 + 5x + 5 = 0? A. -2.5 B. 2.5 C. 2.25 D. -2.25 Ans. A Determine the distance travelled by a particle between a time interval of 0.2 seconds to 0.30 seconds if its velocity is v = 12t4 + 7/t, where v is in cm/s and t is in seconds. A. 3.75 cm B. 2.84 cm C. 2.75 cm D. 3.84 cm Ans. B Compute the arithmetic mean of the following set of numbers: 18, 24, 27, 30, 35, 42, 50. A. 31.82 B. 32.29 C. 30 D. 29.96 Ans. B Find the root mean square of 11, 23 and 35. A. 25 B. 27 C. 26 D. 24 Ans. A Five years ago the father is three times as old as his son. Ten years from now, the father will be twice as old as his son. How old is the son twelve years from now. A. 32 years old B. 20 years old C. 50 years old D. 38 years old Ans. A The sum of P15,000, deposited in an account earning 4% per annum compounded quarterly, will become P18,302.85. Determine the effective rate of interest per year. A. 3.06% B. 4.06% C. 5.06% D. 6.06% Ans. B If a machine is purchased on instalment and the buyer makes an P80,000.00 down payment and owes a balance of P150,000 in 2 years. Determine the machine cash value if money is worth 14% compounded quarterly. A. P199,312.00 B. P183,912.00 C. P193,912.00 D. P139,912.00 Ans. C A machine was purchased under these terms: P30,000 down and P5,000 each month for 5 years. If money is worth 12% compounded monthly, what is the cash price of the machine? A. P144,775.19 B. P245,775.19 C. P542,775.91 D. P254,775.19 Ans. D A. B. C. D. Find ∫(7x3 + 4x2) dx? 7x2 /3 + 4x2 /2 + C 7x4 /4 + 4x3 /3 + C 7x4 /4 + 4x2 /5 + C 7x4 /5 + 4x3 /5 + C Ans. B What is the least common denominator or simply LCD of 1/12 and 1/18? A. 24 B. 36 C. 72 D. 54 Ans. B How many two digit numbers can be formed from the number 1, 2, 3, and 4 if repetitions is not allowed? A. 8 B. 12 C. 16 D. 20 Ans. B How many two digit numbers can be formed from the number 1, 2, 3, and 4 if repetitions is allowed? A. 6 B. 12 C. 18 D. 64 Ans. D The volume of the cube is increasingly at the rate of 5 cu. M per minute. Determine the rate at which the surface area is increasing in m2/min, when its side is 10 m. A. ½ B. 1.75 C. 1.5 D. 2 Ans. D The segment from (-1, 4) to (2, -2) is extended three times its own length. What is the terminal point? A. (11, -18) B. (11, -24) C. (11, -20) D. (-11, -20) Ans. C Studyhi ni choy! The midpoint of the line segment between P1(x1, y1) and P2 (-2, 4) is Pm (2, -1). Find the coordinate of P1. A. (6, -5) B. (11, -24) C. (6, -6) D. (-6, 6) Ans. C Find the coordinates of the point P(2, 4) with respect to the translated axis with origin at (1, 3). A. (1, -1) B. (1, 1) C. (-1, -1) D. (-1, 1) P(x-h, y-k) Ans. B What is the area bounded by y = 0, y = ex, x = 0, x = 2 A. 2.27 B. 6.389 C. 1.79 D. 1.27 Ans. B The salary of an employee’s job has five levels, each one 5% greater than the one below it. Due to circumstances, the salary of the employee must be reduced from the top (fifth) level to the second level, which means a reduction of 3000.00 per month. What is the employees present salary per month? A. P22,032.50 B. P23,022.50 C. P22,320.50 D. 22,302.50 Present salary is s5 Ans. A Twice the middle digit of a three-digit number is the sum of the other two. If the number is divided by the sum of its digit, the answer is 56 and the remainder is 12. If the digits are reversed, the number becomes smaller by 594. Find the number. A. 852 B. 285 C. 825 D. 582 Ans. A Lucy sold 100-pirated DVD. Eighty of them were sold at a profit of 30% while the rest were sold at a loss of 40%. What is the percentage gain or loss on the whole stock? A. 15% B. 20% C. 16% D. 12% Ans. C A pole cast a shadow 15 m long when the angle of elevation of the sun is 61o. If the pole has lean 15o from the vertical directly toward the sun, what is the length of the pole? A. 54.23 m B. 48.64 m C. 36.84 m D. 64.84 m Ans. A A man finds the angle of elevation of the top of the tower to be 30o. He walks 85 m nearer the tower and finds angle of elevation to be 60o. What is the height of the tower? A. 76.31 m B. 73.31 m C. 73.16 m D. 73.61 m 73.61 m !! Ans. A How many 3 digit numbers may be formed from the digits 0, 1, 2, 3, 4 and 5 if no digit may be repeated in a given number? A. 100 B. 180 C. 45 D. 52 120 !! Ans. A In how many ways can you line-up 4 marines and 6 army soldiers must be side by side with each other and the army soldiers are likewise? A. 35,460 B. 34,560 C. 36,450 D. 30,546 Ans. B A semiconductor company will hire 7 men and 4 women. In how many ways can the company choose from 9 men and 6 women who qualified for the positions? A. 540 B. 480 C. 680 D. 840 Ans. A A bag contains 3 white and 5 red balls. If two balls are drawn at random, find the probability that both are white. A. 0.375 B. 0.10714 C. 0.46667 D. 0.28571 Ans. B A certain job can be done by Jobelle and TJ in 10 hours, by Jobelle and Jessyl in 12 hours and TJ and Jessyl in 20 hours. Find how long would it take by Jobelle to do the job alone. A. 30 hours B. 60 hours C. 15 hours D. 25 hours Ans. B 15 HOURS !! In 1995, little cute Jobelle had a pocket contains P11.65 of twenty five and ten centavo coins. If the total number of coins is 70. Find how many twenty five coins did she has? A. 31 B. 39 C. 21 D. 29 Ans. A A bullet weighing 4 grams was fired from a gun with the barrel measuring 12 cm long. If the bullet was fired with a speed of 380 m/s solve the energy of the bullet in Joules . A. 289 B. 345 C. 798 D. 1009 Ans. A A pipe lining material of silicon carbide used in the conveyance of pulvurized coal to fuel a boiler, has a thickness of 2 cm and inside diameter of 10 cm. Find the volume of the material of a pipe length of 6 meters in liters. A. 45.24 B. 47.45 C. 51.47 D. 68.97 Ans. A A missile is fired with a speed of 100 fps in a direction of 30o above the horizontal. Determine the maximum height to which it rises in feet. A. 38.85 B. 19.43 C. 377.33 D. 1509.32 Ans. A What time between 2 and 3 o’clock will the hands of the clock be opposite one another. A. 2:43 7/11 B. 2:44 7/11 C. 2:37 8/11 D. 2:46 7/11 Ans. A From a deck of ordinary cards, what is the probability of drawing a heart or face card? A. 48.08% B. 42.31% C. 5.77% D. 33.33% 43.75% Ans. B A perfect gas is expanded polytropically with an initial volume and temperature of 0.06 m3 and 147oC respectively. If the final volume and temperature are 0.21 m3 and 21oC respectively, what is the index of the expansion? A. 1.285 B. 1.212 C. 1.333 D. 4.400 Ans. A If the loan was for 15 months at 16.8% interest a year and the repayment on a loan was P12,100.00, how much was the principal? A. P8,500.00 B. P9,500.00 C. P10,000.00 D. P10,500.00 Ans. C The sum of P15,000, deposited in an account earning 4% per annum compounded quarterly, will become P18,302.85. Determine the effective rate of interest per year. A. 3.06% B. 4.06% C. 5.06% D. 6.06% Ans. B Find the number of years when P2,500.00 is compounded to P5,800.00 at 12% compounded quarterly. A. 6.12 years B. 7.12 years C. 8.12 years D. 5.12 years Ans. B What is the effective rate equivalent of 12% compounded quarterly? A. 12.55% B. 11.55% C. 12.98% D. 13% Ans. A What rate compounded quarterly is equivalent to 14% compounded semiannually? A. 10.76% B. 11.76% C. 12.76% D. 13.76% Ans. D Celestino owes P500, due in 3 years and P800 due in 7 years. He is allowed to settle these obligations by a single payment on the 6th year. Find how much he has to pay on the 6th year if money is worth 14% compounded semi-annually. A. P1,449.12 B. P1,559.12 C. P1,339.12 D. P1,669.12 Ans. A Determine the amount that must be deposited every 3 months in a fund earning 12% compounded quarterly in order to have P25,000 in 8 years. A. P716.71 B. P476.17 C. P674.71 D. 1700.00 Ans. B What is the value of 1 radian in degrees? A. 89.55o B. 57.3o C. 60.3o D. 45.58o Ans. B If the density of gas is 0.003 slug/ft3, what is the specific weight of the gas? A. 15.2 N/m3 B. 9.04 N/m3 C. 98.2 N/m3 D. 76.3 N/m3 Ans. A If the specific weight of a liquid is 58.5 lb per cubic foot, what is the specific volume of the liquid? A. 1.0675 cm3/g B. 0.5321 cm3/g C. 1.5502 cm3/g D. 0.9504 cm3/g Ans. A The atomic weight of hydrogen is 1 gram per gram-atom. What is the mass of a hydrogen atom? A. 1.66 x 10-24 g/atom B. 6.02 x 10-23 g/atom C. 1 g/atom D. The mass is too small to calculate Ans. A A ball is dropped from a height of 60 meters above ground. How long it take to hit the ground? A. 4.5 seconds B. 3.5 seconds C. 2.5 seconds D. 1.5 seconds Ans. B A 5 meter extension ladder leans against the wall; the bottom is 3 m from the wall. If the bottom stays at the same place, how much should the ladder be extended so that the top would lean against the wall 1 meter higher? A. 1.2 m B. 1.5 m C. 0.5 m D. 0.83095 m Ans. D If a stone is dropped from a balloon while ascending at the rate of 7.5 m/s reaches the ground in 6 seconds, what was the height of the balloon when the stone was dropped? A. 110.12 m B. 120.25 m C. 131.81 m D. 140.12 m Ans. C A cubical container that measures 50.8 mm on a side is tightly packed with marbles and is filled with water. All eight marbles are in contact with the walls of the container and the adjacent marbles. All of the marbles are same size. What is the volume of water in the container? A. 434,096.51 mm3 B. 62,454.54 mm3 C. 431,960.51 mm3 D. 68,641.97 mm3 Ans. B What is the determinant of the 2 x 2 matrix, │7 6 │? │5 9 │ A. -33 B. 33 C. -43 D. 43 Ans. B What is the determinant of the 3 x 3 matrix, │1 2 -1│? │2 -1 1│ │1 1 1 │ A. 6 B. 7 C. -6 D. -7 Ans. D Given the following vectors A = 3i + 2j, B = 2i + 3j + k, C = 5i + 2k. Simplify the expression (A x B).C. A. 20 B. 0 C. 60i + 24k D. 5i + 2k Ans. A Determine the rationalized value of the complex number (6 + 2.5i)/(3 + 4i). A. 1.12 – 0.66i B. 0.32 – 0.66i C. -32 + 0.66i D. -1.12 + 0.66i Ans. A Determine the type of flow of fluid flowing inside 25.4 cm radius pipe at a velocity of 10 m/s and a viscosity of 1.131 Pa-s. A. Laminar flow B. Turbulent flow C. Critical flow 4491.60 D. Transition flow Ans. A What is the probability of an examinee to pass or fail the board exam? A. 50% B. 0% C. 100% D. 75% Ans. C How many even numbers of three different digits each can be formed from the digits 1, 2, 3, 4, 5 and 7? A. 20 B. 40 C. 36 D. 28 Ans. B What is the measure of 1 ½ revolutions counter-clockwise? A. +540o B. -540o C. +90o D. -90o Ans. A If the hypotenuse of a right triangle is 34 cm. What is the length of the shortest leg if it is 14 cm shorter than the other leg. A. 17 cm B. 15 cm C. 16 cm D. 18 cm Ans. C If AB = 15 cm, BC = 18 cm and CA = 24 cm, find the point of intersection of the angular bisector from the vertex C. A. 11.3 cm B. 13.4 cm C. 12.1 cm D. 14.3 cm Ans. D A car travels from point M northward for 30 minutes then eastward for one hour, then shifted N30oW. If the constant speed is 40 kph, how far directly from M will be it after 2 hours? A. 41.6 km B. 47.9 km C. 43.5 km D. 45.2 km Ans. B If the sides of a triangle are 18 cm, 24 cm and 34 cm, respectively. What is the length of the median to the 24-cm side? A. 21.4 cm B. 24.4 cm C. 20.4 cm D. 23.4 cm Ans. B From the third floor window of a building, the angle of depression of an object on the ground is 35o58’, while from a sixth floor window, 9.75 m above the first point of observation the angle of depression is 58o 35’. How far is the object from the building? A. 15.3 m B. 9.3 m C. 10.7 m D. 11.9 m Ans. C In the following identities, which one is different from the others? A. 2cos2x – 1 B. Cos4x – sin4x C. Cos3x – sin3x D. 1 – 2sin2x Ans. C Estimate the median of the following set of numbers: 18, 24, 27, 30, 35, 42, 50. A. 31.82 B. 32.29 C. 30 D. 29.96 Ans. C How many permutations can be made from the letters a, b, and c taken two at a time? A. 6 B. 8 C. 18 D. 64 Ans. A Solve for the length of the hypotenuse of a right triangle if length of the two legs are 7 m and 16 m, respectively. A. 10.363 m B. 12.567 m C. 15.648 m D. 17.464 m Ans. D A car in overtaking a trailer, uniformly accelerated its speed from 40 km/hr to 90 km/hr in 8 seconds. Calculate the distance travelled during the period of acceleration in meters. A. 144.44 B. 156.09 C. 346.9 D. 500.78 Ans. A An area of 25.6 cm2 on the map represents a lot having an area of 640 m2. If the scale on the map is 1:x, what is the remainder is 10. Determine the value of x? A. 50 B. 100 C. 500 D. 900 Ans. C When the expression x4 + ax3 + 5x2 + bx + 6 is divided by (x – 2), the remainder is 16. When it is divided by (x + 1) the remainder is 10. Determine the value of the constant a. A. 6 B. 9 C. 5 D. 7 Ans. D What is the simple interest rate if an investment of P37,500.00 accumulates to P45,937.5 in 18 months? A. 0.15 B. 0.20 C. 0.21 D. 0.3 Ans. A The JRF Corporation manufactures bookcases that sells for P65.00 each. It costs JRF corporation P35,000.00 per year to operate its plant. The sum includes rentals, depreciation charges on equipment, and salary payments. If the cost to produce one book case is P50.00, how many bookcases must be sold each year for the corporation to avoid taking a loss? A. 539 Bookcases B. 750 Bookcases C. 2333 Bookcases D. 2334 Bookcases Ans. D A machine is purchased for P500,000.00. The salvage value in 25 years is P100,000.00. What is the depreciation in the first three years using straight line method? A. P24,000.00 B. P32,000.00 C. P48,000.00 D. P16,000.00 Ans. C How much must be deposited at 6% each year on January 1, year 1, in order to accumulate P5,000.00 on the date of the last deposit, January 1, year 6? A. P676.24 B. P766.24 C. P667.2 D. P626.24 716.813 Ans. A Jeffrey made a loan from a bank. The bank charges him 12% simple interest on a P300.00 loan. How much will be repaid if the loan is paid in one lump sum after three years? A. P425.00 B. P408.00 C. P551.00 D. P450.00 Ans. B My P5,000 shall accumulate for 10 years at 8% compounded quarterly. What is the compound interest of my money at the end of 10 years? A. P6,005.30 B. P6,040.20 C. P6,000.00 D. P6,010.20 Ans. B What is the effective rate corresponding to 18% compounded daily? A. 17.72% B. 18.72% C. 19.72% D. 20.72% Ans. C The management of a certain company deposits P1,500.00 for each of its employees in a retirement fund at the end of each year for the next 12 years. How much is each employee’s fund at the end of 12 years if it accumulates 8% for the first 8 years and 6% for the last 4 years? A. P27,705 B. P26,705 C. P24,705 D. 23,705 Ans. B What is the least number of years needed to triple a certain amount of money at 5% per annum compounded interest to the nearest year? A. 20.5 years B. 18.5 years C. 22.5 years D. 16.5 years Ans. C The roots of the quadratic equation are 1/3 and -3/2. What is the equation? A. 6x2 + 5x + 3 = 0 B. 6x2 – 7x – 3 = 0 C. 6x2 + 7x – 3 = 0 D. 6x2 + 7x + 3 = 0 Ans. C What is the sum of the numerical coefficient in the expansion of ( x – 2y)7? A. -1 B. 1 C. -2187 D. 2187 Ans. A Mr. PME covered a distance of 55 km in 4 hrs by driving his car 40 kph, part of the way, and by walking the remainder of the way at 5 kph. What part of the total distance did Mr PME go by car? A. 7/11 B. 8/11 C. 9/11 D. 10/11 Ans. B The water tank in Calamba Water District can be filled by pipe A in half the time the pipe B can empty the tank. When both pipes are operating, the tank can be filled in 1 hour and 12 minutes. Determine the time, in hours, for pipe A to fill the tank alone. A. 0.6 B. 0.7 C. 0.75 D. 0.8 Ans. A Of the 316 people attending the party, there are 78 more children than women and 50 more women than men. Determine the number of men in the party. A. 46 B. 96 C. 112 D. 178 Ans. A A house can be constructed in as many days as there are men in the group of construction personnel. If the number of men is reduced by 4, the project is delayed by 5 days. Determine the original number of number of construction personnel. A. 18 B. 16 C. 20 D. 24 Ans. C Determine the distance between points A(2, 3, 5) and B(7, 2, -6). A. 11.08 units B. 12.08 units C. 13.08 units D. 14.08 units Ans. C What are the two positive numbers whose sum is 8, if the product of one number by the cube of the other number is to be maximum? A. 1 & 7 B. 2 & 6 C. 3 & 5 D. 4 & 4 Ans. B Forty liters of a 60% salt solution are produced to a 45% solution. How much solution must be drained off and replaced with distilled water so that the resulting solution contains only 45% solution. A. 6 liters B. 8 liters C. 10 liters D. 12 liters Ans. C If ln y = 5 and ln x = 3, what is the value of ln(x2/y1/2)? A. 2.5 B. 3.5 C. 4.5 D. 1.5 Ans. B A river is 580 ft wide. The bridge construction cross the river is banked 1/7 of its length in the east and 1/6 of the length in the west. What is the length of the bridge? A. 660 ft B. 750 ft C. 840 ft D. 1670 ft Ans. C What is the area of the circle whose equation is x2 + y2 – 6x + 8y = 0? A. 25π B. 5 π C. 15 π D. 20 π Ans. A An oblique triangle has sides a = 6 cm, b = 9 cm and angle C = 32o. Solve the angles of the triangle. A. 39o6’48”; 108o51’54” C. 40o, 80o B. 39o6’48”; 98o51’54” D. 50o, 102o Ans. A Given a triangle with angle C = 28.7o, side a = 132 units and b = 224 units. Solve for the angle B. A. 140.94o B. 130.94o C. 120.94o D. 80.94o Ans. C USE COSINE LAW If the sides of a triangle are 18 cm, 24 cm and 34 cm, respectively. What is the length of the median to the 24-cm side? A. 21.9 cm B. 24.4 cm C. 20.4 cm D. 23.4 cm Lookscam! Ans. B What is the suppliment of an angle whose compliment is 62o? A. 152o B. 118o C. 28o D. 60o Ans. A A certain angle has a supplimentary five times its compliment. What is the angle? A. 186o B. 168.5º C. 67.5o D. 157.5o Ans. C Water is pouring into a swimming pool. After t hours, there are t + √t gallons in the pool. At what rate, in GPM is water pouring into the pool when t = 9 hours? A. 0.0194 B. 1.167 C. 1.235 D. 3.6 Ans. A From the top of tower A, the angle of elevation of the top of the tower B is 46o. From the foot of tower B to the top of tower A is 28o. Both towers are on a level ground. If the height of tower B is 120 m, how high is tower A? A. 40.7 m B. 44.1 m C. 42.3 m D. 38.6 m Ans. A In the problem of writing the equation of a certain curve with respect to another axes in which the new axes are parallel to the original axes and similarly directed is known as A. Translation of axes C. Notation of axes B. Reversal of axes D. Relocation of axes Ans. A The index that gives the rate earned per share based on current price per share is called as: A. Price earning ratio B. Operating expense ratio C. Dividend yeild D. Equity ratio Ans. C What is annuity? A. The future worth of a present amount B. A series of uniform amounts over a period of time C. The present worth of a future amount D. An annual repayment of a loan Ans. B When using net present worth calculations to compare two projects, which of the following could invalidate the calculation? A. Use the same discount rate for each period B. Differences in the magnitudes of the projects C. Evaluating over different time periods D. Mutually exclusive projects Ans. C Which of the following situations has a conventional cash flow so that an internal rate of return can be safely calculated and used? A. Your company undertakes a mining project in which the land must be reclaimed at the end of the project. B. You invest in a safe dividend stock and receive dividends each year. C. You lease a car and pay by the month D. Your company invest heavily in a new product that will generates profit for two years. To keep profits high for 10 years, the company plans to reinvest heavily after two years. Ans. B Which of the following elements and compounds is unstable in its pure form? A. Hydrochloric acid B. Carbon dioxide C. Sodium D. Helium Ans. C A substance is oxidized when which of the following occurs? A. It losses electrons B. It becomes more negative C. It gives off heat D. It absorbs energy Ans. A Which one of the following statements regarding organic substances is false? A. Organic matter is generally stable at very high temperature B. Organic substances generally dissolve in high-concentration acids C. All organic matter contains carbon D. Organic substances generally do not dissolve in water. Ans. A Which of the following affects most of the electrical and thermal properties of materials? A. The weight of the atoms B. The weight of the protons C. The electrons, particularly the outermost one D. The magnitude of electrical charge of the protons Ans. C What are the valence electrons? A. The electrons of complete quantum shells B. Electrode with positive charge C. The outer-shell electrons D. The K-quantum shell electrons Ans. C How do you call the strong bond between hydrogen atoms? A. Ionic and metallic bonds B. The covalent bond C. The ionic bond D. The metallic bond Ans. B What are Van der Waals forces? A. Forces present only in gases B. Forces not present in liquids C. Primary bonds between atoms D. Weak secondary bonds between atoms Ans. D Which of the following is false? A. The acceleration of a body rotating with a constant angular velocity is zero. B. Angular momentum for rigid bodies may be regarded as the product of angular velocity and inertia C. The radius of gyration for a mass of uniform thickness is identical to that for a planar area of the same shape. D. Kinematics is the study of the effects of motion, while kinetics is the study of the causes of motion. Ans. A What do you call the replacement of the original cost of an investment? A. Pay off B. Return on investment C. Break-even D. Capital recovery Ans. A Adding more solute to an already saturated solution will cause the excess solute to settle to the bottom of the container. What is this process calle? A. Precipitation B. Hydration C. Dehydration D. Saturation Ans. A The length of time at which the original cost of capital used to purchase a unit has already been recovered. A. Economic life B. Write off period C. Physical life D. Salvage life Ans. B A family of circles having a common center is said to be: A. Annulus B. Circularing C. Eccentric circle D. Concentric circles Ans. D A law, which states that the curvature of the central fiber is proportional to the bending moment in homogeneous bar. A. Euclid B. Thailus C. Bernoulli-Euler D. Torrecilli Ans. C Given two triangles lying in non-parallel planes such that the lines joining their corresponding vertices intersect at a common point. If the lines containing the corresponding sides of the triangle intersect the points of intersection are collinear. The preceeding statements is known as A. Desargue’s theorem B. Euclid’s theorem C. Heron’s theorem D. Aristotole’s theorem Ans. A When two sellers control sufficient of the supply of a commodity or service to control its price is known as: A. Duopoly B. Monopoly C. Oligopoly D. Control Ans. A The ratio of total liabilities to total assets is said to be: A. Equity ratio B. Debt ratio C. Quick ratio D. Price-earning ratio Ans. B A fraction is a quotient of two integers because they are ratios of integers. The integer on top is called the numerator and the integer at the bottom is called as the: A. Denominator B. Remainder C. Dividend D. Augend Ans. A In a thermodynamics process following, PVn = C, what is the process if the value of n is infinity? A. Isentropic process B. Polytropic process C. Isometric process D. Isobaric process Ans. C The products or services that are desired by humans and will be purchased if money is available after the required necessities have been obtained. A. Necessities B. Luxuries C. Elastic demand D. Inelastic demand Ans. B A demand that occurs when a decrease in selling price produces little or no effect in sales. A. Inelastic demand B. Demand C. Elastic demand D. Necessity Ans. A An interest computed on the basis of 12 months of 30 days each or 360 days a year, and one interest period is equal to 360 days. A. Interest B. Ordinary simple interest C. Simple interest D. Exact simple interest Ans. B What must two investments with the same present worth and unequal lives have? A. Identical equivalent uniform annual cash flow B. Different salvage values C. Different equivalent uniform annual cash flows D. Identical salvage values Ans. D Which of the following statelemnts is not true? A. A nominal rate of 12% per annum compounded quarterly is the same as (3%) ÷ 4 = 3% per quarter B. One Peso compounded quarterly at 3% for n years has a worth of (1.03)4th Pesos. C. 12.55% annual compounding is the effective rate for a situation in which the principal is actually compounded quarterly at an annual rate of 12% D. Effective rate of return in choices a through c is the difference between 12.55% and 12%. Ans. D Firm A uses full absorption costing while firm B uses variable product costing. How will the financial statements of these companies differ? A. Firm A has a higher cost of goods sold, higher inventory value, and no change in retained earnings. B. Firm A has a higher cost of goods sold and, therefore, a smaller profit. C. Firm A has a smaller cost of goods sold and a larger profit. D. Firm A has a smaller cost of goods sold, no change in inventory value, and no change in retained earnings. Ans. A How is the material purchase price variance defined? A. Quantity purchaced – quantity used x actual price B. (Quantity purchased x actual price) – (quantity purchased x standard price) C. Actual price – standard price x quantity used D. Quantity issued – standard quantity x standard price Ans. B Borobodor Corporation is applying for a short loan. In reviewing Borobodor Corporation’s financial records, the banker finds a current ratio of 2.0 an acid-test ratio of 0.5, and an accounts receivable period of 70 days. What should be the banker do? A. Extend the loan, as Borobodor Corporation will have no trouble repaying it. B. Suggest that Borobodor Corporation lower its inventories C. Suggest that Borobodor Corporation be more aggressive in collecting on its invoices. D. Consider all the actions from a to c above. Ans. D Companies A and B are identical except for their inventory accounting systems. Company A uses the last-in, first out convention while company B uses the first in, fist out convention. How will their financial statements differ in an inflationary environment? A. Company’s B profits will be higher and the book value will be higher than for company A. B. Company’s A profits will be higher and the book value of their inventory will be higher than for company C. Company’s A profits will be higher and the book value of their inventory will be lower than for company B. D. Company’s B profit will be higher than A’s but inventory book value will be lower Ans. A Alternatives with different lives will generally be compared by way of A. Equivalent uniform annual cost (EUAC) B. Equivalent present cost C. Equivalent future worth factor D. Rate of return Ans. A A statement of equity between two ratios. A. Variation B. Inequity C. Proportion D. Fraction Ans. C How do you call the costs of things that are neither labor nor materials? A. Labor costs B. Expenses C. Material costs D. Investment cost Ans. B A satellite orbiting the earth passes directly overhead stations in Phoenix and Los Angeles, 340 miles apart. At an instant when the satellite is between these two stations, its angle of elevation is simultaneously observed to be 60o at Phoenix and 75o at Los Angeles. How far is the satellite from Los Angeles? A. 170 mi B. 416 mi C. 653 mi D. 316 mi Ans. B Find the second derivative of the parametric equations x = 4 – t2 and y = t2 + 4t. A. -1/t3 B. 1/t3 C. -2/t3 D. 3/t2 Ans. A What expression is equivalent to log x – log ( y + z)? A. Log x + log y + log z B. Log[x/(y + z)] C. Log x – log y – log z D. Logy + log (x + z) Ans. B If a = b, then b = a. This illustrates of which of the following axioms in algebra? A. Transitive axiom B. Reflexive axiom C. Replacement axiom D. Symmetric axiom Ans. D What is the logarithm of a negative number? A. Complex number B. Real number C. Irrational number D. Imaginary number Ans. A A manufacturer of sports equipment produces tennis rackets for which there is a demand of 200 per month. The production set up cost for each lot of racket is P300.00. In addition, the inventory carrying cost for each racket is P24 per year. Using the Economic Order Quantity(EOQ) model, which is the best production batch size for the rackets? A. 245 units C. 173 units B. 71 units D. 346 units Ans. A What is the Eigen value of the matrix . │5 3 │ │0 2 │ A. 5, 2 B. 5, 3 C. 0, 2 D. 0, 3 Ans. A What is the beta function β [3, 7/2]. 16/693 integral from 0 to 1 (t)^(x-1)(1-t)^(y-1) A car moving at 20 m/s with its horn blowing at f = 1200 Hz ……. 1.219 11011 is equal to 27 The reciprocal of 5 is: A. 0.1 B. 0.4 C. 0.2 D. 0.5 Ans. C The digits of measurement which a scientist reads and estimates on a scale are called: A. Accuracy B. precision C. significant figures D. experimentation Ans. C Simplify: am/n A. n√m C. am+n B. am/n D. am x n Ans. A Factor the expression x2 + 7x + 12 as completely as possible: A. (x + 4)(x + 2) B. (x + 4)(x + 3) C. (x + 3)(x + 2) D. (x + 2)(x +5) Ans. B Factor the expression: 2x3 – 2x2 – 12x A. 2x(x – 3)(x + 2) B. 2x(x + 3)(x - 2) C. 2x(x – 4)(x - 2) D. 2x(x + 3)(x - 4) Ans. A If A can do the job in x days and B in y days, how long will they finish the job working together? A. (x + y)/xy days B. x + y days C. (xy)(x + y) days D. (x + y)/2 days Ans. C In a pile of logs, each layer contains one or more log than the layer above and top contains just one log. If there are 105 logs in the pile, how many layers are there? A. 10 B. 14 C. 12 D. 15 Ans. B A and B working together can finish painting a house in six days. A, working alone, can finish it in five days less than B. How long will it take B to finish the work alone? A. 10 days B. 12 days C. 11 days D. 15 days Ans. D Simplify (n√m )n A. a C. an/1 B. a1/n D. a/n Ans. A Solve for x: 2x2 – y2 – 14 = 0 but y = x – 1 A. x = -5 and x = 3 B. x = -6 and x = 2 C. x = 5 and x = -3 D. x = 6 and x = -2 Ans. A A manufacturing firm maintains one product assembly line to produce signal generators. Wekly demand for the generator is 35 units. The line operates for 7 hours per day, 5 days per week. What is the maximum production time per unit in hours required of the line to meet the demand? A. 1 hour B. 3 hours C. 2 hours D. 4 hours Ans. A Which number has three significant digits? A. 0.0011 B. 0.01111 C. 1.1111 D. 0.0111 Ans. D An urn contains 6 black balls and 4 white balls. What is the probability of getting 1 black and 1 white ball in two consecutive draws from the urn? A. 0.25 B. 0.53 C. 0.33 D. 0.76 Ans. B If A to the ¾ power equals 18.8, A is equal to: A. 35 B. 50 C. 45 D. 60 Ans. B The value of (3 to 2.5 power) square is equal to: A. 730 B. 150 C. 243 D. 93 Ans. C 10 to the negative 12th power is the value of the prefix: A. micro B. tera C. nano D. pico Ans. D The product of (a – b)2: A. a2 + b2 B. a2 – 2ab + b2 C. a2 – b2 D. a2 + 2ab + b2 Ans. B The arithmetic mean of 2 and 5 is: A. 3.5 B. 7 C. 3.16 D. 10 Ans. A The geometric mean of 3 and 12 is: A. 18 B. 7.5 C. 15 D. 6 Ans. D Factor the expression: (1 – a to the 8 th power) as completely as possible. A. (1 + a to the 4 th power) x (1 + a2)(1 + a)(1 – a) B. (1 + a to the 4 th power) x (1 – a to the 4 th power) C. (1 + a to the 4 th power) x (1 + a2) (1 – a2) D. (1 + a2) (1 – a2) x (1 - a to the 4th power) Ans. A In a quadratic equation, if the quantity under the radical is equal to zero, the roots are: A. imaginary numbers C. real and unequal B. complex and unequal D. real and unequal Ans. D Solve for x and y: 3x – y – 6 = 9; 9x – y – 12 = 0 A. x = 3; y = 1 B. x = 1; y = -3 C. x = 2; y = 2 D. x = 4; y = 2 Ans. B Factor the expression (x4 – y4) as completely as possible: A. (x + y)(x2 + 2xy + y2) B. (x2 + y2)(x2 – y2) C. (x2 + y2)(x + y)(x – y) D. (1 + x2)(1 + y)(1 – y2) Ans. C What is the sum of the following finite sequence of terms? 18, 25, 32, 39, …………., 67 A. 234 B. 181 C. 213 D. 340 Ans. D Factor the expression: 16 – 10x + x2. A. (8 + x)(2 – x) B. (x – 8)(x – 2) C. (8 – x)(2 + x) D. (x + 8)(x + 2) Ans. B A father is 24 years older than his son. In 8 years he will be twice as old as his son. What is the present age of the father? A. 35 B. 45 C. 40 D. 50 Ans. C A certain two digit number is four times the sum of its digits, if 36 be added to the number, the digits will be reversed. Find the number. A. 48 B. 74 C. 64 D. 84 Ans. A A and B working together, can finish a piece of work in 6 days. A working alone can finish it in 10 days. How long will it take B to do the work alone? A. 15 days B. 10 days C. 12 days D. 8 days Ans. A How much of a 40% solution of alcohol shouls be mixed to an 80% solution to give 150 liters of a 50% solution? A. 127.5 liters B. 112.5 liters C. 122.5 liters D. 37.5 liters Ans. B Two planes fly toward each other from points 2500 km apart, at the rates of 600 kph and 400 kph. When will they meet if they start at the same instant? A. 2 hrs B. 3 hrs C. 2 ½ hrs D. 1 hr Ans. C Twenty five potatoes are placed on the ground 4 ft apart in a straight row. In line with potatoes and 10 ft from the first one is a basket. A runner starting from the basket picks up the potatoes and carries them one at a time to the basket. If he runs at an average rate of 5 yards per second, how many potatoes he put into the basket in 76 seconds? A. 15 potatoes B. 21 potatoes C. 19 potatoes D. 25 potatoes Ans. A A man bought 23 chickens for P29.00. The cocks cost P3.00 each, the hens P1.50 each, and the chicks at 0.50 each. How many cocks, hens and chicks did he buy? A. 3, 4, 13 B. 4, 6, 12 C. 5, 5, 13 D. 5, 7, 12 Ans. C At what time between 3 PM and 4 PM will the hands of the clock be opposite to each other? A. 3:15 PM B. 3:45 PM C. 3:35 PM D. 3:49 PM Ans. D A and B together weigh 242 pounds. They balance when A is seated 5 feet from the fulcrum on one side of a lever and B is seated 6 feet from the fulcrum on the other side. Find the weight of A. A. 82 lbs B. 110 lbs C. 100 lbs D. 132 lbs Ans. D A group of students rented a convention hall for P240.00. If there were 4 students less, the share of each would have been P2.00 more. How many students were in the group? A. 40 B. 24 C. 30 D. 18 Ans. B Resolve into partial fractions: (8x – 8) / (x3 – 2x2 – 8x) A. B. C. D. 1/x + 1/(x – 4) – 2/(x + 2) 2/x + 1/(x – 4) + 1/(x + 2) 1/x - 1/(x – 4) + 2/(x + 2) 2/x - 1/(x – 4) – 1/(x + 2) Ans. A From a box containing 8 red balls, 10 white balls and 12 blue balls, one ball is drawn at random. Determine the probability that is white: A. ¼ B. ½ C. 1/3 D. 2/5 Ans. C From a box containing 8 red balls, 10 white balls and 12 blue balls, one ball is drawn at random. Determine the probability that is white or blue: A. 0.9333 B. 0.733 C. 0.833 D. 0.333 Ans. B From a box containing 8 red balls, 10 white balls and 12 blue balls, one ball is drawn at random. Determine the probability that one is red and the other is blue: A. 0.110 B. 0.330 C. 0.220 D. 0.440 Ans. C From a box containing 8 red balls, 10 white balls and 12 blue balls, one ball is drawn at random. Determine the probability that is not blue: A. 0.60 B. 0.45 C. 0.50 D. 0.35 Ans. A Determine the 7th term of the expansion (2y – 11)11. A. 14,784 x5 y6 B. 11,784 x6 y7 C. 985 x6 y5 D. 765 x6 y7 Ans. A Find the term involving y4 in the expansion of (x + y)7. A. 35 x4y3 B. 35 x3 y4 C. 25 x4y3 D. 25 x4 y4 Ans. B Find the last term of the progression 10, -2, 14, ……. to 17 th term. A. -182 B. -1462 C. -220 D. -1530 Ans. A Find the sum of the integers between 2 and 100 which are divisible by 3. A. 970 B. 1683 C. 1100 D. 1985 Ans. B Find the last term of the progression: 2, 6, 18, …….. 6 th terms. A. 335 B. 555 C. 486 D. 728 Ans. C Find the sum of the roots of: 2x2 + 5x + 5 = 0. A. 5/2 B. -5/2 C. 2/5 D. -2/5 Ans. B Find the value of x in the equation: (5x + 6)1/2 =x+2 A. 2 and 1 B. 2 and -1 C. -2 and -3 D. -2 and 3 Ans. B The force F of attraction between two electric charges varies inversely as the square of the distance between them. If the force is 20 grams when they are 150 mm apart, find the force when they are 75 mm apart. A. 30 grams B. 60 grams C. 45 grams D. 80 grams Ans. D Factor the given expression: 6 – 3m2 – 8m + 4m3 A. (3 + 4m)(2 + m2) B. (3 + 4m)(2 – m2) C. (3 – 4m)(2 – m2) D. (3 – 4m)(2 + m2) Ans. C Which of the following is a prime number? A. 100 B. 101 C. 99 D. 105 Ans. B Funds supplied by others on which a fixed rate of interest must be paid and the debt be repaid at a specific place and time. A. Borrowed capital B. Investment C. Salvage value D. Interest Ans. A What is an annuity? A. A series of equal payments at equal time periods B. The cost of manufacturing a product C. An investment that yields an equal amount of interest D. The overhead cost per unit of production Ans. A Estimated value at the end of the useful life: A. salvage value B. economic life C. compounded annually D. balance sheet Ans. A Consists of the actual counting or determination of the actual quantity of the materials on hands as of a given date: A. physical inventory B. technological assessment C. material update D. material count Ans. A A depreciation model where the value of an asset decreases at a decreasing rate: A. straight line B. declining balance C. sinking fund D. sum of the years digit Ans. B What do you call an increase in the value of a capital asset? A. capital expenditure B. capital stock C. capital gain D. profit Ans. C What is the value which a disinterested third party, different from the buyer and seller, will determine in order to establish price acceptable to both parties? A. francise value B. goodwill value C. fair value D. market value Ans. C Liquid assets such as cash and other assets that can be converted quickly into cash, such as accounts receivables and merchandize are called: A. land and buildings B. current assets C. total assets D. fixed assets Ans. B What is the recorded current value of an asset? A. salvage value B. present worth C. book value D. scrap value Ans. C What is the method of depreciation where a fixed sum of money is regularly deposited at compound interest in a real or imaginary fund in order to accumulate an amount equal to the depreciation of an asset at the end of the asset’s estimated life? A. sinking fund method B. SYD method C. straight line method D. declining balance Ans. A What do you call a radical expressing an irrational number? A. surd B. radix C. complex number D. index Ans. A How long is each side of a regular pentagon with perimeter of 90 inches? A. 12 inches B. 20 inches C. 18 inches D. 24 inches Ans. C What is the angle which the line of sight to the object makes with the horizontal is below the eye of the observer? A. angle of depression B. Bearing C. angle of elevation D. acute angle Ans. A What do you call a statement of truth which is admitted without proof? A. Postulate B. Axiom C. Corollary D. theorem Ans. B What is an expression of two terms? A. Binomial B. Duomial C. Monomial D. polynomial Ans. A Use the slope-intercept equation of a line y = mx + b with slope of 2/3 and y –intercept of 2. A. y = 3/2 x + 2 B. y = 2/3 x + 2 C. y = 2x + 3/2 D. y = 3x/2 + 3/2 Ans. B Solve for x: x – 1/x = 0. A. x = 1, -1 B. x = -1 C. x = 1, ½ D. x = -1/2, -1 Ans. A The general second degree equation has the form: Ax2 + Bxy + Cy2 + Dx + Ey + F = 0. If B2 – 4AC = 0, the equation describes: A. a circle B. a hyperbola C. an ellipse D. a parabola Ans. D Convert the expression (3a + 2b)2 into a polynomial: A. 9a2 + 6ab + 4b2 B. 9a2 + 12ab + 4b2 C. a2 + 3a(2b) + (ab)2 D. 3a2 + 6ab + 4b2 Ans. B Find the 30 th term of an AP 4, 7, 10, ……… A. 91 B. 88 C. 90 D. 75 Ans. A Find the area bounded by the curve y2 = 1 – x and the line y = 1 + x. A. 9/2 B. 5/2 C. 7/2 D. 3/2 Ans. A An angle greater than the right angle but less than a straight angle: A. acute angle B. obtuse angle C. reflex angle D. oblique angle Ans. B Integrate (t2 + 4)/(t3 + 12t + 2) dt A. (1/2) ln(t3 + 12t + 2)2 + C C. (1/2) (t3 + 12t + 2)2 + C B. (1/3) ln(t3 + 12t + 2)2 + C D. (1/3) (t3 + 12t + 2)2 + C Ans. B Integrate (x2/2 – 2/x2) dx A. x2/6 – 6/x + C B. x2/6 – 2/x + C C. x2/4 + 2/x + C D. x2/6 + 2/x + C Ans. D The radius of the sphere increases at the rate of 3 cm per second from zero initially. How fast is the volume increasing after 2 seconds? A. 432π cm3/sec B. 632 π cm3/sec C. 532 π cm3/sec D. 832 π cm3/sec Ans. A There are seven arithmetic means between 3 and 35. Find the sum of all the terms. A. 169 B. 167 C. 171 D. 173 Ans. C The logarithms of the quotient and the product of two numbers are 0.352182518 and 1.556302501, respectively. Find the first number. A. 11 B. 9 C. 10 D. 12 Ans. B Differentiate: 7x2 + 16x. A. 14x – 16 B. 14x + 16 C. 7x + 16 D. none of these Ans. B What is the length of the latus rectum of the curve: x2 = -12y? A. 12 B. 3 C. -3 D. -12 Ans. A Find the slope of the line whose parametric equations are x = 4t + 6 and y = t – 1. A. -4 B. 4 C. ¼ D. -1/4 Ans. C In triangle ABC, AB = 8 m and BC = 20 m. One possible dimension of CA is: A. 13 B. 9 C. 11 D. 7 Ans. A Determine the sum of the infinite geometric series of 1 – 1/5 + 1/25. A. 5/7 B. 4/7 C. 5/6 D. 4/5 Ans. C Polygons are classified according to their: A. diagonals B. Angles C. sides D. vertices Ans. C An object moves along a straight line such that, after t minutes, its distance from its starting point is S = 20t + 5/(t + 1) meters. At what speed, in m/min will it be moving at the end of 4 minutes? A. 39.8 B. 29.8 C. 49.8 D. 19.8 Ans. D A cone was formed by rolling a thin sheet of metal in the form of a sector of a circle 72 cm in diameter with a central angle of 150 degrees. Find the volume of the cone in cc. A. 7733 B. 7744 C. 7722 D. 7711 Ans. D If n is the number of sides of a polygon, then the number of diagonals of a polgon is expressed as: A. n! B. (n/2)(n – 3) C. (n – 1)! D. (n/3)(n – 2) Ans. B ______ Find the second derivative of y = √x2 + x-2 -6x2 B. -2x-3 C. 6x-4 D. 6x3 Ans. C A. Where does the point of inflection occur in the equation: x3 – 3x. A. first quadrant B. origin C. third quadrant D. y-axis Ans. B The value of e raise to the negative 5 power is equal to: A. 0.0067379 B. 0.0063779 C. 148.4130 D. 0.0076397 Ans. A A quadrilateral with no side parallel: A. Trapezoid B. Rhombus C. Rhomboid D. trapezium Ans. D What is the slope of the curve: x2 + y2 – 6x + 10y + 5 = 0 at (1, 0) A. 2/5 B. -2/5 C. 5/2 D. -5/2 Ans. A What is the equivalent expression for sin 2x? A. ½ sinx cosx B. 2sinx/secx C. -2sinx D. -2sinx cosx Ans. B Given the function f(x) = x to the 3rd power 12x + 1, find the value of the first derivative at x = 1. A. 9 B. 12 C. -9 D. 3 Ans. C Find the partial derivative with respect to x of the function: 150 x2y – 10xy + 3y + 5 A. 300xy – 10y B. 150x2 – 10x C. 150y – 10y D. 300xy – 10x + 3 Ans. A As x increases uniformly at the rate of 0.001 ft/sec at what rate is the expression (1 + x)2 increasing when x = 4 ft? A. 0.01 B. 0.001 C. 0.10 D. 1.01 Ans. A What is the value of each interior angle of a regular pentagon? A. 3π/5 B. π/3 C. π/5 D. 2π/5 Ans. D How many cubic meters is 150 gallons of liquid? A. 0.58761 B. 0.57871 C. 0.56781 D. 0.56871 Ans. C Determine the center of the curve 2x2 + 2y2 – 8x + 4y – 40 = 0 A. (2, 1) B. (2, -1) C. (-2, -1) D. (-2, 1) Ans. B Factor the expression 2x2 + 12x + 16 as completely as possible. A. 2(x – 2)(x – 4) B. 2(x + 2)(x – 4) C. 2(x – 2)(x + 4) D. 2(x + 4)(x + 2) Ans. D Body or space bounded by surface every point of which is equidistant from a point within. A. circle B. Ellipsoid C. spheroid D. sphere Ans. D The slope of the line is ½. The slope of the second line is -2/3. Both lines intercept at the point (3, 1). What is the acute angle between the line? A. 60.3o B. 75.4o C. 67.2o D. 90.0o Ans. A The position of an object as a function of time is described by x = 4t3 + 2t2 – t + 3. What is the acceleration of the object at t = 2? A. 52 B. 64 C. 56 D. 66 Ans. A The velocity of a particle at time t is: v(t) = 12t4 + 7/t. What total distance is travelled between t = 0.2 and t = 0.3? A. 2.84 B. 3.85 C. 3.25 D. 2.48 Ans. A The value of (4 to the 2nd power) square root is equal to: A. 2 B. 3 C. 16 D. 4 Ans. D What is the simplified equivalent expression of (cot2θ)(sin2θ) + 1/csc2 θ A. 0 B. cos θ C. sin2 θ D. 1 Ans. D An angle greater than a straight angle and less than two straight angles are called: A. right angle B. reflex angle C. obtuse angle D. acute angle Ans. B A line segment joining two points on a circle is called: A. arc B. sector C. tangent D. chord Ans. D All circles having the same center but with unequal radii are called: A. encircle B. Concyclic C. tangent circles D. concentric circles Ans. D The csc of 960 deg is equal to: A. 1 B. - √3/2 C. ½ D. -2 √3/3 Ans. D A quadrilateral with two and only two sides of which are parallel is called: A. parallelogram B. quadrilateral C. Trapezoid D. rhombus Ans. C Compute for the torsional deflection in degrees of a 100 mm diameter, 1.75 meter long shaft subjected to a twist moment of 5.5 x 106 N-mm. The torsional modulus of elasticity is 85000 N/mm2. A. 0.22 deg B. 0.33 deg C. 0.55 deg D. 0.66 deg Ans. D What diameter of bolt is required if the bolt is subjected to a tensile load of 24,000 lb and a torque (for tightening) of 7,000 in-lb and maximum normal stress is not exceeded 30,000 psi? A. ¾ inch B. 1 inch C. 1 ½ inch D. 2 inches Ans. B A body weighing 1,019.36 kg was put on top of a 3205 N/cm helical spring. What is the deformation of the spring in cm due to the body on top? A. 2.1 cm B. 3.1 cm C. 4.1 cm D. 5.1 cm Ans. B A steel rod 25 mm in diameter and 1000 mm long has an allowable elongation not to exceed 3 mm, find the allowable load in KN. A. 604.5 KN B. 504.5 KN C. 404.5 KN D. 304.5 KN Ans. D Find the section modulus in cubic inch of a shaft with diameter 2.25 inches A. 1.11 B. 2.22 C. 3.33 D. 4.44 Ans. A What is the decrease in lateral dimensions due to an axial tensile force of 40,000 lbs in a bar 2.5 inches on each side and 5 feet long? The material is steel (E = 3.0 x 107 psi, µ = 0.3) A. 5.133 x 10-4 in/in B. 4.133 x 10-4 in/in C. 3.133 x 10-4 in/in D. 2.133 x 10-4 in/in Ans. D A wire of length 1.90 m has a percentage strain of 0.032% when loaded with tensile force. Determine the extension of the wire in mm. A. 0.108 B. 0.408 C. 0.608 D. 1.208 Ans. C Determine the polar section modulus, Zp (in3) of a shaft delivering 15 HP at 300 rpm. The diameter of the shaft is 2.0 in and allowable shear stress of 4500 psi. Use a factor of safety of 5. A. 1.57 in3 B. 1.75 in3 C. 1.95 in3 D. 2.47 in3 Ans. A Find the polar section modulus of a hollow shaft with an outside diameter of 5 inches and inside diameter of 3 inches. A. 51.36 in3 B. 41.36 in3 C. 31.36 in3 D. 21.36 in3 Ans. D A 16 ft horizontal beam is subjected toa load of 500 lbs located at its center. The dimension of the beam is 3 x 5 inches respectively and its unit weight is 100 bl/ft. Find the flexural stress in psi. A. 2992 psi B. 3255 psi C. 4992 psi D. 5982 psi Ans. D A horizontal platform with a diameter of 6 m revolves about its center at 20 rpm. Find the tangential speed, in m/s of a point at the edge of the platform. A. 6.34 B. 6.46 C. 6.28 D. 6.12 Ans. C The radius of the earth is 3960 mi. The gravitational acceleration of the earth’s surface is 32.16 fps2. What is the velocity of escape from the earth in mi/s? A. 4.91 B. 7.83 C. 8.62 D. 9.36 Ans. A A train running at 60 kph decelerated at 2m/min2 for 14 minutes. Find the distance travelled, in km within this period. A. 12.2 B. 13.8 C. 13.2 D. 12.8 Ans. B An 18 in long rod floats vertically in water. It has a 5 in2 cross section and a specific gravity of 0.80. What length L is floating? A. 14.4 in B. 6.2 in C. 14.9 in D. 3.6 in Ans. D A car travelling on a horizontal unbanked circular track of radius rand the track is 0.30. Determine the cars velocity while travelling at a radius of 34 m, without skidding. A. 15 m/s B. 14 m/s C. 12 m/s D. 10 m/s Ans. D A body weighing 180 lb starts from rest and slides down a plane at an angle of 30o with the horizontal for which the coefficient of friction f = 0.3. How far will it move when t = 4 sec? A. 68.11 ft B. 11.88 ft C. 45.88 ft D. 61.88 ft Ans. D A force of 400 lbf acts on a block at an angle of 30o with the horizontal. The block is pushed 5 fthorizontally. What is the work done by this force? A. 2439 J B. 2259 J C. 2689 J D. 2349 J Ans. D Trailer travels at 85 mi/hr around a banked highway curve with a radius of 1000 ft. What banking angle is necessary such that friction f = 0.3 to resist the centrifugal force? A. 6o B. 10o C. 9o D. 12o Ans. C Given the component velocities, whatis the resultant accelerationwhen t = 4? Vx = t4 – t, Vy = 6 – t3 A. 240 B. 270 C. 259 D. 310 Ans. C An elevator weighing 5000 lb attainsan upward velocity of 20 fps in 4 sec with uniform acceleration. What is the tension in the supporting cable when elevator resistance is 20 lb per ton. A. 5826.4 lb B. 5676.8 lb C. 5776.4 lb D. 5576.2 lb Ans. A A 10 kg block was dropped 3 meters high. What is the velocity of the block upon reaching the ground? A. 7.67 m/s B. 7.76 m/s C. 6.77 m/s D. 6.67 m/s Ans. A 150 g of water are mixed with 100 g of alcohol (ρ = 790 kg/m3). What is the specific volume of the mixture assuming the fluids mix completely? A. 1.1 cm3/g B. 1.2 cm3/g C. 0.95 cm3/g D. 1.3 cm3/g Ans. A Absolute viscosity is essentially independent of pressure and is primarily dependent on: A. Temperature B. Specific gravity C. Density D. Velocity Ans. A An instrument for measuring specific gravity of fluids. A. Hygrometer B. Hydrometer C. Flowmeter D. Psychrometer Ans. B The sum of the pressure head, elevation head and the velocity head remains constant, this is known as A. Boyle’s law B. Bernoulli’s Theorem C. Torrecelli’s law D. Archimedes Principle Ans. B A liquid whose temperature is lower than the saturation temperature corresponding to the exesting pressure: A. compressed liquid B. subcooled liquid C. saturated liquid D. pure liquid Ans. B A company specializes in the shipment of pressurized gaseous materials. An order is received for 500 liters of a particular gas at (32oF and 1 atm). What minimum volume of tank is necessary to transport the gas at 90oF and a maximum pressure of 10 atm? A. 141 liters B. 60 liters C. 152 liters D. 56 liters Ans. D Air is compressed in a diesel engine from an initial pressure of 13 psia and a temperature of 120oF to one-twelve of its initial volume. Calculate the final temperature assuming the compression to be adiabatic. A. 1010oF B. 980oF C. 987oF D. 1560oF Ans. A A closed vessel contains air at a pressure of 200 KN/m2 gauge and a temperature of 32oC. The air is heated to 60oC with the atmospheric pressure of 750 mm Hg. What is the final gauge pressure? A. 337.54 B. 127.54 C. 227.54 D. 427.54 Ans. C A shot is fired at an angle of 45o with the horizontal and velocity of 300 fps. Calculate to the nearest, the range of the projectile. A. 350 ft B. 1200 m C. 400 mi D. 932 yards Ans. D Steam with an enthalpy of 900 kcal/kg enters a nozzle at a velocity of 50 m/s. Find the velocity of the steam at the exit of the nozzle if its enthalpy is reduced to 600 kcal/kg, assuming the nozzle is horizontal and disregarding heat losses. A. 1685 m/s B. 1568 m/s C. 1658 m/s D. 1586 m/s Ans. D A perfect venture with throat diameter of 2 in is placed horizontally in a pipe with a 6 in pipe diameter. What is the difference in static pressure if water flows 100 lb per second. A. 247.2 kpa B. 242.7 kpa C. 274.3 kpa D. 224.7 kpa Ans. A What is the water pressure if manometer is 0.8 m Hg? Mercury is 13.6 times heavier than water. A. 106.73 kpa B. 110.55 kpa C. 107.99 kpa D. 120.22 kpa Ans. A Water is flowing in a pipe with radius of 25.4 cm and a velocity of 10 m/s. The viscosity of water is 1.131 pa-s. What is the Reynold’s Number? A. 4492 B. 4429 C. 2449 D. 2944 Ans. A What is the density of a stone in kg/m3 that weighs 90 N in air and 50 N in water? A. 2259 B. 2502 C. 2205 D. 2270 Ans. A For a system to be in equilibrium, the sum of the external forces acting on the system must be: A. equal to unity B. Indeterminate C. a maximum D. zero Ans. D An air tight closed box of weight P is suspended from a swing balance. A bird of weight W is placed on the floor of the box, and balance reads W + P. If the bird flies around the box at a constant elevation without accelerating, what is the balance reading? A. P B. P + 2W C. P + W D. P – W Ans. C The vector which represents the sum of a group of force vectors is called: A. magnitude B. sum C. Resultant D. component Ans. C Which of the following is not a vector quantity? A. velocity B. Acceleration C. speed D. displacement Ans. C A hoist with a 100 hp engine is capable lifting a 10,000 lb load to a height of 20 feet in 10 seconds. What is the efficiency of this machine? A. 34.6% B. 36.4% C. 46.3% D. 43.6% Ans. B An object is placed 3 feet from the center of horizontally rotating platform. The coefficient of friction is 0.30. The object will begin to slide off when the platform speed is nearest to: A. 12 rpm B. 22 rpm C. 17 rpm D. 33 rpm Ans. C Two barges, one weighing 10 tons, the other weighing 20 tons are connected by a cable in quiet water. Initially the barges are at rest 100 feet apart. The cable is reeled in until the barges are 50 ft apart. If the friction is negligible, calculate the distance moved by the 10 ton barge. A. 33.33 ft B. 20 ft C. 50 ft D. 16.66 f Ans. A A projectile wighing 100 lbs strikes the concrete wall of a fort with an impact velocity of 1200 ft/sec. The projectile comes to rest in 0.01 second, having penetrated the 8-foot thick wall to a distance of 6 ft. What is the average force exerted on the wall by the projectile? A. 3.73 x 105 lbs B. 3.33 x 105 lbs C. 2.37 x 105 lbs D. 3.37 lbs Ans. A A projectile launched at 2000 ft/sec from A at an angle of 30 deg with the horizontal, impacts at the same elevation at B. Assume no in-flight propulsion and no aerodynamic drag. Horizontal distance in miles between A and B is nearest to: A. 7.9 B. 15.9 C. 10.2 D. 20.3 Ans. D Kinematic viscosity may be expresse as: A. ft2/sec B. slugs/sec C. sec2/ft D. sec2/cm Ans. A An open chamber rests on the ocean floor in 160 ft of seawater (SG = 1.03). What air pressure in psig must be maintained inside to exclude water? A. 45.6 B. 71.4 C. 60.9 D. 93.2 Ans. B What head in feet of air, at ambient conditions of 14.7 psia and 68oF, is equivalent to 2 psia? A. 146 B. 288 C. 395 D. 3830 Ans. D An open topped cylindrical water tank has a horizontal circular base 10 ft in diameter. When filled to a height of 8 feet, the force in lbs exerted on its base is nearest to: A. 3,900 B. 10,000 C. 7,800 D. 39,200 Ans. D A gas bubble rising from the ocean floor is 1 inch in diameter at a depth of 50 feet. Given that sp gravity of sea water is 1.03, the buoyant force in lbs being exerted on the bubble at this instant is nearest to: A. 0.014 B. 0.076 C. 0.020 D. 0.14 Ans. C In fluid flow, if the fluid traveld parallel to the adjacent layers and the paths of individual particles do not cross, the flow is said to be: A. laminar B. critical C. turbulent D. dynamic Ans. A Normal boiling point of liquid oxygen is 90oK. What is this temperature in deg R? A. -330 B. 162 C. -183 D. 168 Ans. B 55,000 gallons of water passes through a heat exchanger and absorbs 28,000,000 BTU. The exit temperature is 110 deg F. The entrance water temperature in deg F. The entrance water temperature in deg F is nearest to: A. 49 B. 68 C. 56 D. 73 Ans. A The mass flow rate of Freon 12 through a heat exchanger is 10 lbs/min. Enthalpy of Freon entry is 102 Btu/lb and Freon exit is 26 Btu/lb. Water coolant is allowed to rise 10oF. The water flow rate in liters per minute is: A. 76 B. 83 C. 34.5 D. 54.3 Ans. C The maximum thermal efficieny that can be obtained in an ideal reversible heat engine operating between 1540 deg F and 340 deg F is closet to: A. 100% B. 78% C. 60% D. 40% Ans. C Second law limitations on the maximum unit burning 1,000,000 Btu/hr of fuel with high and low temperature extremes of 1540 deg F and 40 deg F is: A. 98 B. 1140 C. 295 D. 3830 Ans. C Work or energy can be a function of all of the following except: A. force and distance B. power and time C. torque and angular rotation D. force and time Ans. D A high velocity flow of gas at 800 ft/sec possesess kinetic energy nearest to which of the following? A. 1.03 Btu/lb B. 9.95 Btu/lb C. 4.10 Btu/lb D. 12.8 Btu/lb Ans. D Power may be expressed in units of: A. ft-lbs B. HP-hrs C. Btu/hr D. kw-hr Ans. C A Carnot engine operating between 70oF and 2000 deg F is modified solely by raising the higher temperature by 150 deg F and raising the low temperature by 100 deg F. Which of the statements is true? A. thermodynamic efficiency decreased B. thermodynamic efficiency increased C. less heat rejected in the system D. less heat added in the system Ans. A A company pays 3.5% interest quarterly. What is the effective annual interest rate? A. 10.75% B. 14.75% C. 17.45% D. 24.75% Ans. B A savings certificate that costs P5000 now will pay P8000 in five years. What is the interest rate? A. 9.85% B. 11.85% C. 18.55% D. 25.55% Ans. A If P20,000 is invested now, and P40,000 four years from now (all at 5%), what will be the total amount in ten years? A. P110,505.37 B. P130,505.37 C. P230,505.37 D. P330,505.37 Ans. B What is the capitalized cost of a project that will cost P20,000,000 now and will require P3,000,000 in maintenance annually? The effective annual interest rate is 15%. A. P30,000,000 B. P40,000,000 C. P50,000,000 D. P60,000,000 Ans. B What is the present worth of 60,000 due in 5 years if money is worth 15% and is compounded semi-annually? A. P19,111.63 B. P29,111.63 C. P39,111.63 D. P49,111.63 Ans. B A sum of money is deposited now in a savings account. The effective annual interest rate is 12% and interest is compounded monthly. How much money must be deposited to yield P1,500.00 at the end of 10 months? A. P1351.99 B. P1551.99 C. P2351.99 D. P3351.99 Ans. A Find the compound amount if P7500 is invested at 12% compounded quarterly for 7 years and 6 months. A. P18,204.47 B. P28,204.47 C. P38,204.47 D. P48,204.47 Ans. A How much money must be invested today in order to withdraw P12,000 per year for 12 years if the interest rate is 12%? A. P44,332.49 B. P54,332.49 C. P74,332.49 D. P94,332.49 Ans. C How long will it take a sum of money to double at 10% annual percentage rate? A. 5.27 years B. 7.27 years C. 9.27 years D. 12.27 years Ans. B In a small factory with a capacity of 500,000 units per year with a 75% efficiency, the annual income is P500,000 and a fixed cost of P180,000 and variable cost of P0.52 per unit. What is the break-even point? A. 222,223 units B. 242,223 units C. 252,223 units D. 222,222 units Ans. A