1. Question 1
/1
An alkyl radical is best defined as
Hide answer choices
1.
any functional group that substitutes for a hydrogen atom in an alkane.
2.
an electron that is shared in a covalent bond.
3.
cancer-causing molecules found in foods
4.
the remaining portion of an alkane after it loses a hydrogen atom.
2. Question 2
/1
Refers to a secret code which secures and defends sensitive information that crosses over public
channels into a form decipherable only with a matching electronic key
Hide answer choices
1.
Electronic codeElectronic mark
2.
Electronic message
3.
Electronic key
3. Question 3
/1
What is the reaction at point A?
QUEST010 question(1).JPG
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1.
0
2.
500 N
3.
710 N
4.
290 N
4. Question 4
/1
Between any two given rates of output, if marginal cost is less than average total cost, then
greater output means:
Hide answer choices
1.
Total fixed cost must decline.
2.
Total variable cost must decline.
3.
Total cost is declining.
4.
Average total cost must decline.
5. Question 5
/1
The magnitude of vector C (C = 4i - 3j + k) is
Hide answer choices
1.
zero
2.
squareroot of 26
3.
2
4.
squareroot of 8
6. Question 6
/1
"The solubility constant of stronyium sulfate, SrSO 4, is 2.8 x 10-7. How many grams of SrSO4 must
be dissolved in water to produce 1 L saturated solution?"
Hide answer choices
1.
0.00005 g
2.
0.0005 g
3.
0.1 g
4.
2g
7. Question 7
/1
Generally, in ac generators
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1.
the armature winding is rotated with respect to a stationary magnet field
produced by electromagnet or permanent magnets
2.
the armature winding is supplied with current; or the armature is placed inside a
set of radially supported magnetic poles.
3.
the electromagnets or permanent or permanent magnets&
4.
current is sent into the armature winding is usually placed in a stationary
laminated iron core and the rotating element may or may not be a set of magnet
poles, it depends on the type of motor
8. Question 8
/1
Which of the following occurs when table salt (NaCI) is added to continuously heated boiling
water?
Hide answer choices
1.
The water continues to boil.
2.
The temperature of the water decreases but boiling continues uninterrupted.
3.
The water momentarily stops boiling.
4.
The water boils even more agitatedly.
9. Question 9
/1
The initial investment to buy an equipment of a proposed project to increase productivity is
$25,000 and this equipment will have a salvage value of $5,000 at the end of its expected life of 5
years. Increased productivity attributed to the equipment will amount to $8,000 per 5 year after
extra operating costs have been subtracted from the value of the additional production. If MARR
(Minimum Attractive Rate of Return) is 20%, compute the External Rate of Return Method
(ERR) using the six (6) methods for making Economy Studies.
Hide answer choices
1.
0.2168
2.
0.2297
3.
0.2315
4.
0.2083
10. Question 10
/1
A group of 50 persons attended a secret meeting in room which is 12 m. wide by 10 m. long and
a ceiling height of 3 m. The room is completely sealed off and insulated. Each persons gives off
150 kCal per hour of heat and occupies a volume of 0.20 m3. The room has an initial pressure of
101.3 kPa and temperature of 16oC. Calculate the room temperature after 10 minutes. Use R =
0.287 kJ/kg-K and Cv = 0.171 kCal/kg-K.
Hide answer choices
1.
31.7oC
2.
37.7oC
3.
33.1oC
4.
38.7oC
1. Question 11
/1
A tank contains 80 ft3 of air at a pressure of 350 psi. If the air is cooled until its pressure and
temperature decrease to 200 psi and 70oF respectively, what is the decrease in internal energy?
Hide answer choices
1.
5552
2.
4575
3.
-5507
4.
0
2. Question 12
/1
What is the effective rate corresponding to 16% compounded daily? Take 1 year = 360 days.
Hide answer choices
1.
0.1784
2.
0.165
3.
0.1735
4.
0.1678
3. Question 13
/1
If an deal regenerator is added to the cycle , the temperature entering the burner is:
Hide answer choices
1.
T4
2.
T3
3.
T1
4.
T2
4. Question 14
/1
Heat can be transferred by conduction through:
Hide answer choices
1.
solids only
2.
all of the above
3.
gases only
4.
liquids only
5. Question 15
/1
Which of the following second law statements is incorrect?
Hide answer choices
1.
Heat must be rejected from a heat engine.
2.
Work must be input if energy is transferred from a cold body to a hot body.
3.
The entropy of an isolated process must remain constant or rise.
4.
The entropy of a hot block decreases as it cools.
6. Question 16
/1
An ideal refrigeration cycle operates between a low temperature of -12oC and a high pressure of
800 kPa. If the mass flow rate is 2 kg/s of R134a, the compressor power requirement is nearest:
How much heat could the cycle of above problem supply?
Hide answer choices
1.
1270 MJ/hr
2.
865 MJ/hr
3.
1060 MJ/hr
4.
932 MJ/hr
7. Question 17
/1
Which of the following is not a control volume?
Hide answer choices
1.
Compressor
2.
Turbine
3.
Insulated tank
4.
Car radiator
8. Question 18
/1
Find the nominal rate which if converted quarterly could be used instead of 12% compounded
semi-annually.
Hide answer choices
1.
0.1129
2.
0.1183
3.
0.2134
4.
0.1402
9. Question 19
/1
Which of the following is not an acceptable SI unit?
Hide answer choices
1.
Volume measured in cubic centimeters
2.
Pressure measured in newtons per square meter
3.
Distance measured in centimeters
4.
Density measured in grams per cubic centimeter
10. Question 20
/1
What total torque is applied to the pulley?
QUEST015 question.jpg
Hide answer choices
1.
280 N m
2.
0
3.
230 N m
4.
300 N m
1. Question 21
/1
An interest rate is quoted as being 7.5% compounded quarterly. What is the effective annual
interest rate?
Hide answer choices
1.
22.1181
2.
0.0771
3.
0.1578
4.
0.0722
2. Question 22
/1
The thermal efficiency of a particular engine operating on an ideal cycle is 35%. Calculate the
heat supplied per 1200 watt-hr of work developed in KJ.
Hide answer choices
1.
14 218
2.
11 108
3.
12 343
4.
10 216
3. Question 23
/1
Calculate the peak-to-peak ripple voltage of a 20 V full wave power supply with a filter capacitor
C = 220 μF when delivering a load current of 50 mA
Hide answer choices
1.
2.0 Vpp
2.
7.9 Vpp
3.
5.67 Vpp
4.
3.79 Vpp
4. Question 24
/1
Power cycles are idealized. Which of the following is not an idealization?
Hide answer choices
1.
Friction is neglected.
2.
Pipes connecting components are insulated.
3.
Heat transfer does not occur across a finite temperature difference.
4.
Pressure drops in pipes are neglected.
5. Question 25
/1
Convert 200 kPa gage to absolute millimeters of mercury (pHg = 13.6 pwater).
Hide answer choices
1.
1500 mm
2.
2250 mm
3.
2050 mm
4.
1750 mm
6. Question 26
/1
An isentropic process is
Hide answer choices
1.
Always reversible
2.
Reversible but may not be adiabatic
3.
Adiabatic but may not be reversible
4.
Adiabatic and reversible
7. Question 27
/1
The maximum kinetic and potential energy of a spring when stretched at various displacements
is equal to
Hide answer choices
1.
none of the choices
2.
-mx²
3.
mg
4.
1/2 Kx²
8. Question 28
/1
Which of the structures shown is statistically determinant and stable?
QUEST007 question.JPG
Hide answer choices
1.
I only
2.
II and III
3.
I and III
4.
I and IV
9. Question 29
/1
"The first step in the Otswald process for producing nitric acid is 4NH3(g) + 5O2(G) ? 4NO(g) +
6H2O(g). If the reaction of 150 g of ammonia with 150 g of oxygen gas yeilds 87 g of nitric oxide
(NO), what is the percent yeild of this reaction?"
Hide answer choices
1.
0.44
2.
0.22
3.
0.11
4.
0.33
10. Question 30
/1
Uranium-235 and uranium-238 have the same number of which of the following?
Hide answer choices
1.
Protons and electrons
2.
neutrons
3.
protons
4. Electrons
11. Question 31
/1
What is the percentage (by mass) of hydrogen in glucose (C₆H₁₂O₆)?
Hide answer choices
1.
0.4
2.
0.067
3.
0.17
4.
0.093
12. Question 32
/1
A Carnot cycle is a cycle of special interest because:
Hide answer choices
1.
It provides the maximum efficiency for any cycle.
2.
It operates between two constant-temperature thermal reservoirs.
3.
When it is carefully constructed in a laboratory, it provides an upper limit on
cycle efficiency.
4.
It establishes a lower limit on cyle efficiency.
13. Question 33
/1
Which of the following is a quasiequilibrium process?
Hide answer choices
1.
Compression of air in a cylinder
2.
A balloon bursting
3.
Mixing paint in a car
4.
Combustion
14. Question 34
/1
What is the period of a pendulum that passes the center point 20 times a minute?
Hide answer choices
1.
0.3 s
2.
6s
3.
3s
4.
0.2 s
15. Question 35
/1
Quantity of inertia possessed by an object or the proportion between force and acceleration
Hide answer choices
1.
Mass
2.
Velocity
3.
Moment of inertia
4.
Momentum
16. Question 36
/1
A 10 Kg block rests on a smooth surface. If the pulleys are massless and frictionless, the
block's initial acceleration is
Hide answer choices
1.
19.60 m/s2
2.
9.81 m/s2
3.
10.00 m/s2
4.
19.81 m/s2
17. Question 37
/1
For which of the following situation is the net force acting on a particle necessarily equal to
zero?
Hide answer choices
1.
The particle has constant kinetic energy.
2.
The particle is traveling at constant velocity around a circle.
3.
The particle has constant linear momentum.
4.
The particle has constant angular momentum.
18. Question 38
/1
An object will float at the surface of a liquid if the mass of the object is less than the mass of the
liquid that it displaces. A spherical vessel (diameter = 5.00 cm) when empty has a mass of 12.00
g. What is the greatest volume of water that can be placed in the vessel and still have the vessel
float at the surface of benzene? (Given: density of water = 1.00 g/cm3; density of benzene =
0.879 g/cm3)
Hide answer choices
1.
35.5 L
2.
45.5 L
3.
25.5 L
4.
55.5 L
19. Question 39
/1
Ten kilograms of air is expanded isentropically from 500oC and 6 Mpa to 400 kPa. The work
accomplished is nearest:
Hide answer choices
1.
2990 kJ
2.
4300 kJ
3.
7400 kJ
4.
6200 kJ
20. Question 40
/1
After the piston hits the stops in if P1 =400 kPa and T1= 400oC, what is T2 when the 0.2-m2 piston
hits the stops? How much additional heat is released before P = 100 kPa?
Hide answer choices
1.
1260 kJ
2.
730 kJ
3.
930 kJ
4.
1580 kJ
1. Question 41
/1
If you borrowed money from your friend with simple interest of 12%, find the present worth of
P50,000, which is due at the end of 7 months.
Hide answer choices
1.
P46730
2.
P44,893
3.
P46200
4.
P45789
2. Question 42
/1
Radiation is emitted by:
Hide answer choices
1.
gases only
2.
opaque solids only
3.
liquids only
4.
all materials at a finite temperature
3. Question 43
/1
"While moving from left to right across the second row of the periodic table (i.e., from Li to Ne),
the atomic radii tend to"
Hide answer choices
1.
uniformly decrease.
2.
remain the same.
3.
uniformly increase.
4.
"first increase, then decrease."
4. Question 44
/1
Which sentence below is incorrect?
Hide answer choices
1.
Pure iron is a heterogeneous mixture.
2.
Salads are heterogeneous mixtures.
3.
Milk is a homogeneous mixture.
4.
Sand and water make heterogeneous mixture.
5. Question 45
/1
"If the sum of the forces on a particle is not equal to zero, the particle is"
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1.
accelerating in a direction opposite to the resultant force.
2.
accelerating in the same direction as the resultant force.
3.
moving with a constant velocity opposite to the direction of the resultant force.
4.
moving with constant velocity in the direction of the resultant force.
6. Question 46
/1
"During a laboratory experiment at 1.0 atm and 25°C, a student observed that oxygen gas was
produced by de-composition of 15 g of sodium chlorate. What was the volume of oxygen?"
Hide answer choices
1.
5.14 L
2.
5.15 L
3.
5.16 L
4.
5.17 L
7. Question 47
/1
How many liters of oxygen gas at 153°C and 0.820 atm can be produce by the decomposition of
22.4 g of solid KCIO3? (The other decomposition product is solid potassium chloride.)
Hide answer choices
1.
11.7 L
2.
10.7 L
3.
12.7 L
4.
9.7 L
8. Question 48
/1
For a particle in space in static equilibrium, ___ equations can be used.
Hide answer choices
1.
1
2.
3
3.
2
4.
4
9. Question 49
/1
Marginal cost can best be approximated by the formula:
Hide answer choices
1.
Change in total cost/Change in output
2.
Total cost/Input cost
3.
Change in total cost/Change in input
4.
Total cost/ Output
10. Question 50
/1
Why does a spinning ice skater's angular velocity increase as she brings her arms in toward her
body?
Hide answer choices
1.
Her angular momentum is constant
2.
Her mass moment of inertia is reduced.
3.
Her radius of gyration is reduced.
4.
all of the above
1. Question 51
/1
A company must relocate one of its factories in three years. Equipment for the loading duck is
being considered for purchase. The original cost is P20,000, the salvage value after three years is
P8,000. The company's rate of return (i) on money is 10%. Determine the capital recovery rate
per year.
Hide answer choices
1.
P5,625.38
2.
P5,578.35
3.
P5,987.67
4.
P5,897.56
2. Question 52
/1
The 10 Kg block is released from rest at A. Select the equation that represents the reduced form
of the conservation of energy theorem necessary to determine the maximum compression h in
the spring at B. Place the datum at A.
Hide answer choices
1.
0=-98.1 - 98.1h +50h2
2.
0=-98.1h - 98.1 - 50h2
3.
0=-98.1h + 50h2
4.
0=-98.1 - 50h2
3. Question 53
/1
Kinetic energy results from ______.
Hide answer choices
1.
gravity
2.
friction
3.
velocity
4.
Displacement
4. Question 54
/1
A radio communications service between earth stations at given points, when one or more
satellites are used; the given position may be specific point or any fixed points within specified
areas.
Hide answer choices
1.
Indirect Access
2.
Fixed Satellite Service
3.
Point-to-Point satellite TVCATV Access
5. Question 55
/1
Which electron configuration demonstrates an atom in the excited state?
Hide answer choices
1.
1s²2s²
2.
1s²2s²3s1
3.
1s²2s²2p4
4.
1s²2s1
6. Question 56
/1
Which of the following statements is not true of the diesel cycle?
Hide answer choices
1.
The expansion process is an isentropic process.
2.
The compression is an adiabatic process.
3.
The exhaust process is a constant-volume process.
4.
The combustion process is a constant-volume process.
7. Question 57
/1
Air enters the compressor of an ideal gas-refrigeration cycle at 10oC and 80 kPa. If the maximum
and minimum temperature are 250oC and -50oC, the compressor work is nearest:
Hide answer choices
1.
2400 kJ/kg
2.
190 kJ/kg
3.
220 kJ/kg
4.
170 kJ/kg
8. Question 58
/1
An object will float at the surface of a liquid if the mass of the object is less than the mass of the
liquid that it displaces. A spherical vessel (diameter =2.00 cm) when empty has a mass of 2.00 g.
What is the greatest volume of water that can be placed in the vessel and still have the vessel
float at the surface of the water? (Given: density of water = 1.00 g/cm3)
Hide answer choices
1.
2.19 L
2.
2.17 L
3.
2.18 L
4.
3.19 L
9. Question 59
/1
"When octane (C8H18) is burned in a particular internal combustion engine, the yield of the
products (carbon dioxide and water) is 93%. What mass of carbon dioxide will be produced in
this engine when 15.0 g of octane is burned with 15.0 g of oxygen gas?"
Hide answer choices
1.
11 g
2.
13 g
3.
10 g
4.
12 g
10. Question 60
/1
"During the time a compact disc (CD) accelerates from rest to a constant rotational speed of 477
rev/min, it rotates through an angular displacement of 0.250 rev. What is the angular
acceleration of the CD"
Hide answer choices
1.
901 rad/s²
2.
794 rad/s²
3.
358 rad/s²
4.
126 rad/s²
1. Question 61
/1
The speed of block A if block B has an upward velocity of 6 ft/s is
Hide answer choices
1.
2 ft/s
2.
18 ft/s
3.
12 ft/s
4.
1.5 ft/s
2. Question 62
/1
A silver wire has a diameter of 0.500 mm. What length of this wire contains exactly 1.00 mol of
silver? [Given: density of Ag = 10.5 g/cm3
Hide answer choices
1.
53.3 m
2.
50.3 m
3.
51.3 m
4.
52.3 m
3. Question 63
/1
Estimate the difference in density between the inside and outside of a house in the winter when
P = 100 kPa and Tinside = 20oC and Toutside = -20oC. (This difference leads to air exchange between the
inside and outside)
Hide answer choices
1.
0.151 kg/m3
2.
0.188 kg/m3
3.
0.092 kg/m3
4.
0.165 kg/m3
4. Question 64
/1
A steel mill estimates that one of its furnaces will require maintenance P20,000.00 at the end of
2 years, P40,000.00 at the end of 4 years and P80,000.00 at the end of 8 years. What uniform
semi-annual amounts could it set aside over the next eight years at the end of each period to
meet these requirements of maintenance cost if all funds would earn interest at the rate of 6%
compounded semi-annually?
Hide answer choices
1.
P8,897.35
2.
P9,397.35
3.
P6,897.35
4.
P7,897.35
5. Question 65
/1
Calculate the volume of H2(g) at 273 K and 2.00 atm that will be formed when 275 mL of 0.725
M HCI solution reacts with excess Mg to give hydrogen gas and aqueous magnesium chloride.
Hide answer choices
1.
1.10 L
2.
1.12 L
3.
1.09 L
4.
1.11 L
6. Question 66
/1
Engineering mechanics is formulated on the basis of Newton's
Hide answer choices
1.
Third Law
2.
First Law
3.
Three Laws of Motion
4.
Second Law
7. Question 67
/1
What is the resultant R of the system of forces shown?
QUEST001 question.JPG
Hide answer choices
1.
2.
R = 25i +60j +55k
3.
4.
8. Question 68
/1
Which of the following can be assumed to be reversible?
Hide answer choices
1.
A burst membrane.
2.
A resistance heater.
3.
A piston compressing gas in a rate engine.
4.
A paddle wheel.
9. Question 69
/1
The pH of a 0.001 M HCI solution is
Hide answer choices
1.
3
2.
7
3.
1
4.
5
1. Question 70
/1
An emmision charge:
Hide answer choices
1.
Increases private marginal cost and thus induces higher output.
2.
Increases private marginal cost and thus induces lower output.
3.
Increases social marginal cost and thus induces lower output.
4.
Increases the difference between private and social costs.
2. Question 71
/1
"For a given isotope of an element, the atomic number plus the atomic weight is 148, and their
difference is 58. How many protons does an atom of the isotope contain?"
Hide answer choices
1.
148
2.
58
3.
90
4.
45
3. Question 72
/1
At 6%, find the capitalized cost of a bridge whose cost is P250M and life is 20 years, if the bridge
must be partially rebuilt at a cost of P100M at the end of each 20 years.
Hide answer choices
1.
220
2.
245.3
3.
215
4.
210
4. Question 73
/1
At STP the volume of 1.5 mole N2as compared to 1.0 mole O2 is
Hide answer choices
1.
differ by a factor of 1.25
2.
different by about 11.2 L
3.
"the same, 22.4L"
4.
higher to about three fourths
5. Question 74
/1
The integrated and accredited national organization of Professional Electronics Engineers,
Electronics Engineers and Electronics Technician.
Hide answer choices
1.
Consulting Services
2.
Accredited Professional Organization
3.
Association of Electronics EngineersC. Accredited ECE Organization
6. Question 75
/1
A load draws 1 A current from a 10-V regulated power supply. Calculate the power dissipated by
the regulator if it has an input voltage of 16 V
Hide answer choices
1.
12 watts
2.
16 watts
3.
6 watts
4.
10 watts
7. Question 76
/1
Find the ripple factor(kr) of a sinusoidal signal with peak riplle of 4 volts on an average of 30
Hide answer choices
1.
0.13
2.
0.94
3.
0.013
4.
0.094
8. Question 77
/1
P4,000 is borrowed for 75 days at 16% per annum simple interest. How much will be due at the
end of 75 days?
Hide answer choices
1.
P4,333.33
2.
P4,166.67
3.
P4,133.33
4.
P4,150.00
9. Question 78
/1
The net entropy change in the universe during any real process is
Hide answer choices
1.
Zero
2.
&
3.
&
4.
Any of these
10. Question 79
/1
A rope passes over a fixed sheave as shown. The two rope ends are parallel. A fixed load on one
end of the rope is supported by a constant force on the other end. The coefficient of friction
between the rope and the sheave is 030. What is the ration tensile forces in the two rope ends?
QUEST016 question.jpg
Hide answer choices
1.
1.1
2.
2.6
3.
1.2
4.
1.6
11. Question 80
/1
Which atom is not paired with its correct ion and ionic charge?
Hide answer choices
1.
Mg / Mg22.
F / F13.
Rb / Rb14.
Li / Li1+
1. Question 81
/1
Automobile workers in Detroit who are unemployed because of imports of foreign automobiles
at the same time that job vacancies exist for coal miners in West Virginia would most likely be
classified as:
Hide answer choices
1.
Structurally unemployed.
2.
Frictionally unemployed.
3.
Cyclically unemployed.
4.
Seasonally unemployed.
2. Question 82
/1
If the support is a rocker, in drawing tha free-body diagram, the reaction force has __
unknowns(s)
Hide answer choices
1.
1
2.
4
3.
2
4.
3
3. Question 83
/1
How many valence electrons are in a atom with the configuration 1s²2s²2p?3s²3p²
Hide answer choices
1.
4
2.
2
3.
6
4.
5
4. Question 84
/1
Alternators have less chance to hunt if driven by
Hide answer choices
1.
hydroturbines
2.
diesel turbines
3.
steam turbines
4.
nuclear reactor
5. Question 85
/1
What is the exact interest earned on a $20,000 for a period of 29 days at 5% simple interest?
Hide answer choices
1.
81.45
2.
79.45
3.
97.45
4.
80.45
6. Question 86
/1
What is the reaction at point B?
QUEST012 question.JPG
Hide answer choices
1.
10 000 N
2.
15 000 N
3.
20 000 N
4.
5000 N
7. Question 87
/1
Refers to the theoretical and practical applications and process utilizing data and information.
Hide answer choices
1.
Electronics and Computer TechnologyInformation and Computer technology
2.
Information Management
3.
Information and Communications Technology
8. Question 88
/1
Find the value of P if F = $5,000 , n = 3 years, and i = 8% compounded annually.Find the vauke of
P
Hide answer choices
1.
P=$5,469.62
2.
P=$3,969.15
3.
P=$6,429.62
4.
P=$4,529.62
9. Question 89
/1
A large mining company was provided with a 3000 cc. of compressed air tank. Air pressure in
the tank drops from 700 KPa to 180 KPa while the temperature remains unchanged at 28°C.
What percentage has the mass of air in the tank been reduced?
Hide answer choices
1.
78
2.
76
3.
72
4.
74
10. Question 90
/1
Assuming all of the energy goes into the reaction, what electrical power is required to produce
oxygen gas at a rate of 50 mg/s?
BEC-CHEM001.jpg
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1.
0.89 kW
2.
3.1 kW
3.
9.2 kW
4.
1.5 kW
1. Question 91
/1
Which phase change is described correctly?
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1.
Gas to solid is called sublimation.
2.
Solid to gas is called deposition
3.
Liquid to solid is called freezing
4.
Solid to liquid is called vaporization
2. Question 92
/1
By the conditions of a will, the sum of P25,000 is left to a girl to be held in a trust fund by her
guardian until it amounts to P45,000. When will the girl receive the money if the fund is invested
at 8% compounded quarterly?
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1.
6.8 years
2.
7.42 years
3.
7 years
4.
7.25 years
3. Question 93
/1
Find the interest factor if F = $5,000 , n = 3 years, and i = 8% compounded annually
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1.
0.79383
2.
0.97833
3.
0.78833
4.
0.87383
4. Question 94
/1
Which gas under a high temperature and a low pressure behaves most like an ideal gas?
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1.
He
2.
O₂
3.
Ne
4.
NH₃
5. Question 95
/1
A merchant puts in his P2,000.00 to a small business for a period of six years. With a given
interest rate on the investment of 15% per year, compounded annually, how much will he
collect at the end of the sixth year?
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1.
P4,626.00
2.
P4,200.00
3.
P4,390.15
4.
P4,400.00
6. Question 96
/1
Find the mass of air in the volume shown in if T = 20oC and the frictionless piston has a mass of
75 kg.
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1.
0.0064 kg
2.
0.0256 kg
3.
0.0512 kg
4.
0.0016 kg
7. Question 97
/1
The National Telecommunications Commission can grant an authority to operate a cable
television system within the same franchise area covered by any Provisional Authority or
Certificate of Authority previously granted by the Commission within a minimum number of
years upon determination of cause pursuant to E.O. 436.
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1.
35
2.
4
3.
2
8. Question 98
/1
The three terminal voltage regulators, such as the 78XX series has a typical current rating of 1.5
amperes. If a high current is required say 30 amperes, how will you make modification from this
regulator in order to provide the the required current
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1.
by the use of crowbar circuit
2.
by connecting them in parallel
3.
by cascading them
4.
by the use of external pass transistor
9. Question 99
/1
The frictional effects of the air on the blades of the standing fan creates a couple moment of Mo =
6 N-m on the blades. The value of couple forces at the base of the fan so that the resultant couple
moment on the fan is zero is
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1.
40N
2.
80N
3.
20N
4.
1.8N
10. Question 100
/1
What do you mean by break power transfer?
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1.
the incoming generator will be connected first to the bus bar before disconnecting
the existing generator
2.
the present on-line generator will be disconnected first and then reconnected
together with the incoming generator
3.
the present on line generator will be disconnected first before connecting the
incoming generator
4.
the incoming generator will only be connected to the bus bar break