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Institute of Electronics Engineers Of The Philippines University of Pangasinan Student Chapter START QUIZ Engr. Cezar N. Velasco Jr., ECE Engr. Mark Alvin Prado, ECE EST 1 / 28 Modulator circuit performs what mathematical operation on its two inputs? a. Addition b. Multiplication c. Division d. Square root EST 2 / 28 What is produced by over modulation in AM? Splatter Electronics 3 / 28 Suppose there is an atom containing eight protons and eight neutrons in the nucleus, and two neutron are added to the nucleus, the resulting atomic weight is about 18 Electronics 4/ 28 If an element has an atomic number of 12, there are how many protons and electrons? 12 protons and 12 electrons Math 5 / 28 A theorem which states that under very general conditions, the distribution of the sum of a large number of independent random variables is assymptotically normal, regardless of the distribution of the individual variables a. Central Limit Theorem b. Freunlich Isotherm c. Central Limit Isotherm d. Limit Theorem Math 6/ 28 It is a graph of a sample values plotted on the x-y plane. a. Splatter diagram b. Sniffer diagram c. Clipper Diagram d. Scatter diagram GEAS 7 / 28 What alloy is 40-60% copper and nickel and has a high electrical resistance and is used in thermocouples? Constantan GEAS 8 / 28 What is the amount of energy required to fracture a given volume of material? a. Creep b. Electric field c. Impact Strength d. Energy gap Electronics 9 / 28 A material that contains an abundance of free carrier is called conductor Electronics 1 0/ 28 Isotope means, the same element but with different number of a. electrons b. neutrons c. protons d. atoms Math 1 1/ 28 A coin is tossed seven times, generating a sequence of heads (H) and tails (T). How many different sequence are possible 128 Math 1 2/ 28 The average vertical speed of an experimental rocket is 1200 km. per hr. during its flight. Upon reaching its maximum height, it released a capsule which descended at an average vertical speed of 630 km/hr. If the capsule touched the earth 90 mins. after the rocket was launched, find the height reached by the rocket. X = 619 and 36/61 km GEAS 13 / 28 Fluid that conducts electricity is _________ Electrolyte GEAS 14 / 28 What is a deformation caused by the application of an external force? a. Strain b. Stress c. Torsion d. All the above EST 15 / 28 The values of Vmax and Vmin as read from an AM wave on an oscilloscope are 2.8 and 0.3. The percentage of the modulation is 80.6 percent EST 16 / 28 The maximum deviation of an FM carrier is 2 kHz by a maximum modulating signal of 400 Hz. The deviation ratio is 5 EST 1 7/ 28 If the carrier of a 100 percent modulated AM wave is suppressed, the percentage power saving will be 66.66 Electronics 1 8/ 28 Charge body at rest is said to exhibit electric field, which interacts with other bodies. The study of this phenomena is known as Electrostatics Electronics 19 / 28 Determine the force in Newton between 4μC charges separated by 0.1 meter in air. 14.4 N Math 20 / 28 Find the area bounded by the curves y=x³ and y=4-3x² 27/4 sq. units Math 21 / 28 Find the rectangular equation of x=3cosθ and y=2sinθ and determine what kind of curve it is. x² / 9 + y² / 4 = 1 Math 22 / 28 Find 2a2/3bc2 - 4b/9a2c3 6a4c– 4b2 / 9a2b3 EST 23/ 28 The term used to refer to the reduction of receiver gain caused by the signal of a nearby station transmitter in the same frequency band? Desensitizing EST 24 / 28 What determines the selectivity of a receiver? a. The bandwidth of the tuned circuits b. The gain of the amplifier c. The power handling capability d. The frequency stability Electronics 25/ 28 Calculate the electric field intensity 10cm from a charge Q=5nC. a. 450 N/C b. 900 N/C c. 4.5 x 103 N/C d. 9.0 x 103 N/C GEAS 26 / 28 “Magnetic susceptibilities of most paramagnetic materials are inversely proportional to their absolute temperatures” this is known as Curie law GEAS 27 / 28 The amount of energy per unit volume which the material will possess when subjected to the elastic limit stress is called ________. Modulus of Resilience GEAS 28 / 28 Science which deals with the preparation and application of metals and alloys Metallurgy Get Inspired “When things go wrong as they sometimes will, When the road you’re trudging seems all uphill, When the funds are low and the debts are high, And you want to smile but you have to sigh, When care is pressing you down a bit, Rest if you must but don’t quit!”