ASVAB ASVAB-SECTION-5 Online Practice Questions and Exam Preparation

ASVAB ASVAB-SECTION-5 Online Questions & Answers

• Question 51:

  Regarding the material found in a transistor, __________ is the name given to the object created by the joining of P-type and N-type material.

  A. semiconductor
  B. integrated circuit
  C. diode
  D. cathode
  C. diode

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  Explanation

• Question 52:

  How many volts does it take to send 99 amps of current through 99,000 ohms of resistance?

  A. 0.009801 volts
  B. 980.1 megavolts
  C. 9.801 megavolts
  D. 98.01 volts
  C. 9.801 megavolts

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  Explanation

• Question 53:

  A microwave is rated at 1,200 watts.

  At 120 volts, how much current does it draw?

  A. 1 amp
  B. 10 amps
  C. 100 amps
  D. 1,440 amps
  B. 10 amps

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  Explanation

  I (current) = Power (watts)/Effort (volts). In this case, I = 1200/120 = 10 amperes.

• Question 54:

  

  The above symbol represents a __________.

  A. rheostat
  B. capacitor
  C. relay
  D. potentiometer
  A. rheostat

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  Explanation

  This type of variable resister is usually used to control voltage.

• Question 55:

  Which wire is smallest?

  A. 00 AWG
  B. 4 AWG
  C. 10 AWG
  D. 12 AWG
  D. 12 AWG

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  Explanation

  The smaller the wire, the larger the number

• Question 56:

  Radio frequency amplifiers are used in __________.

  A. audio amplifiers
  B. differential amplifiers
  C. operational amplifiers
  D. receivers and transmitters
  D. receivers and transmitters

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  Explanation

  Radio frequency amplifiers are used in receivers and transmitters to amplify frequencies above the range of sounds audible to humans.

• Question 57:

  

  The symbol above is a/an __________.

  A. resistor
  B. fuse
  C. capacitor
  D. inductor
  B. fuse

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  Explanation

  The symbol is a fuse. Fuses are designed to "blow" (melt) if the current flowing through it exceeds a specified value.

• Question 58:

  The heat effect of current is created __________.

  A. when the pressure of the current in the wire breaks up impurities in the wire, creating heat.
  B. when the current in the wire decays electrons, causing them to move more quickly, creating heat.
  C. when the current overcomes resistance in the wire, creating heat.
  D. The heat effect of current is only theoretical; it has never been proven to exist.
  C. when the current overcomes resistance in the wire, creating heat.

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  Explanation

  Heat effect occurs when electrical current must overcome the resistance of the wire. Heat effect can be quite obvious or very subtle.

• Question 59:

  How much voltage has a typical home outlet?

  A. 120 volts
  B. 200 volts
  C. 60 volts
  D. 100 volts
  A. 120 volts

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  Explanation

  A typical residential electrical outlet has 120 volts.

• Question 60:

  A watt is the power that gives rise to the production of energy at the rate of __________.

  A. 1 joule per minute
  B. 1 volt per second
  C. 1 amp per second
  D. 1 joule per second
  D. 1 joule per second

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  Explanation

  The watt is the unit of power in electrical work. It is defined as the production of energy at the rate of one joule per second (per second is the basis for all electrical work).