ASVAB ASVAB Certifications ASVAB-SECTION-5 Questions & Answers

• Question 71:

  If you operate an incandescent light bulb at less than its rated voltage __________.

  A. the bulb will burn brighter and last longer.

  B. the bulb will burn dimmer and last longer.

  C. the bulb will burn brighter but won't last as long.

  D. the bulb will burn dimmer but won't last as long.

  Correct Answer: B

  The bulb will burn dimmer because its full potential isn't used; it will last longer for the same reason.

• Question 72:

  To measure electrical power, you would use a(n) __________.

  A. ammeter

  B. ohmmeter

  C. voltmeter

  D. wattmeter

  Correct Answer: D

  Electrical power is measured in watts, so you use a wattmeter.

• Question 73:

  Neutral wire is always __________.

  A. whitish or natural

  B. black

  C. green

  D. blue

  Correct Answer: A

  Neutral wire is always whitish or natural colored.

• Question 74:

  A fuse with a higher-than-required rating used in an electrical circuit __________.

  A. improves safety

  B. increases maintenance

  C. may not work properly

  D. is less expensive

  Correct Answer: C

  Because fuses are designed to prevent current overload at a specific level, a fuse with a high rating may not work properly for a circuit rated at a lower level.

• Question 75:

  A number-12 wire, compared to a number-6 wire __________.

  A. is longer

  B. is shorter

  C. is smaller in diameter

  D. is larger in diameter

  Correct Answer: C

  The larger the number, the smaller (in diameter) the wire.

• Question 76:

  A light bulb is 60 watts.

  Operated at 120 volts, how much current does it draw?

  A. 0.5 ampere

  B. 5.0 amperes

  C. 50.0 amperes

  D. 7.200 amperes

  Correct Answer: A

  Power = Current ?Voltage or, written another way, Current = Power/Voltage. 60/120 = 0.5 ampere.

• Question 77:

  To produce greater storage of electrons and more capacitance, capacitors should __________.

  A. be connected in parallel

  B. be connected in series

  C. have more voltage applied to them

  D. be eliminated

  Correct Answer: A

  Connecting capacitors in parallel produces more capacitance.

• Question 78:

  

  The symbol shown above stands for __________.

  A. battery B. transformer

  C. capacitor

  D. resistor

  Correct Answer: A

  This symbol stands for battery.

• Question 79:

  How many wires do serial cables used on computers have?

  A. 3

  B. 9

  C. 15

  D. 25

  Correct Answer: B

  This is true, even if the cable has a 25-pin connector. Serial cables are often used to connect computers to perpetual devices.

• Question 80:

  Insulated fittings can be used to splice wires, thus eliminating the need for __________.

  A. cleaning the wires

  B. removing the plastic coating from the wires

  C. twisting the wires together

  D. soldering the wires together

  Correct Answer: D

  Insulated fittings replace soldering.