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

ASVAB ASVAB-SECTION-5 Online Questions & Answers

• Question 81:

  When an electric current passes through a wire, a __________ field is generated around the wire.

  A. charged
  B. magnetic
  C. positive
  D. negative
  B. magnetic

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  Explanation

• Question 82:

  Analog color television relies on three colors to produce the full color range needed for a good picture: red, blue, and __________.

  A. gray
  B. orange
  C. yellow
  D. green
  D. green

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  Explanation

  Color television uses red, blue, and green "guns" to direct electron streams toward the phosphors in the front of the picture tube, producing the full color spectrum when combined properly.

• Question 83:

  The electronic symbol shown below represents a(n) __________.

  

  A. Capacitor
  B. Resistor
  C. Inductor
  D. Diode
  C. Inductor

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  Explanation

  The symbol is a standard representation of an inductor.

• Question 84:

  A crystal microphone uses __________.

  A. the piezoelectric effect
  B. the Doppler effect
  C. magnetic wavicles to operate
  D. a permanent magnet for resonance
  A. the piezoelectric effect

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  Explanation

  A crystal microphone relies on the piezoelectric effect, where a pressure on a crystal produces an electric current.

• Question 85:

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

  A. ammeter
  B. ohmmeter
  C. voltmeter
  D. wattmeter
  D. wattmeter

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  Explanation

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

• Question 86:

  What effect does a speaker wire's gauge have on speaker sound quality?

  A. higher gauge wires are thicker with better sound quality
  B. lower gauge wires are thicker with better sound quality
  C. lower gauge wires are thicker with lesser sound quality
  D. hire gauge wires are thicker with lesser sound quality
  B. lower gauge wires are thicker with better sound quality

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  Explanation

  Unless a specific gauge is specified by the speaker manufacturer, you should always choose lower gauges for better sound quality.

• Question 87:

  32 cycles per second is equivalent to ___________.

  A. 32 ohms ()
  B. 32 positons (pe-)
  C. 64 hertz (Hz)
  D. 32 hertz (Hz)
  D. 32 hertz (Hz)

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  Explanation

• Question 88:

  

  The symbol above represents a __________.

  A. thyristor
  B. resistor
  C. transistor
  D. fuse
  B. resistor

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  Explanation

  The symbol shown represents a resistor.

• Question 89:

  Two 16 ohm speakers are connected in parallel to an amplifier that provides a 32 volt output. The voltage across each speaker is __________.

  A. 2 volts
  B. 16 volts
  C. 64 volts
  D. 32 volts
  D. 32 volts

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  Explanation

  The voltage across parallel resistors is the same.

• Question 90:

  Transistors are known as being solid-state.

  This means ___________.

  A. transistors have no moving parts and all of their electricity exists in their material
  B. transistors are very reliable and are generally "solid"
  C. transistors never change state once set
  D. transistors carry no state information between charges
  A. transistors have no moving parts and all of their electricity exists in their material

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  Explanation