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

ASVAB ASVAB-SECTION-5 Online Questions & Answers

• Question 41:

  Silver is a better conductor than copper. But copper is more often used because of __________.

  A. the cost of silver
  B. the strength of copper
  C. the low melting point of silver
  D. the tendency of silver to tarnish
  A. the cost of silver

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  Explanation

  Silver is a better conductor, but it's prohibitively expensive.

• Question 42:

  To measure voltage, one would use ___________.

  A. a volt gauge
  B. a voltmeter
  C. a volta
  D. an electrical difference machine
  B. a voltmeter

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  Explanation

• Question 43:

  What's the primary advantage of a quad band cell phone over a dual-band cell phone?

  A. transmission strength
  B. coverage area
  C. reception strength
  D. smaller phone size
  B. coverage area

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  Explanation

  There are four frequency bands used throughout the world. A quad-cell phone would be able to access any of these frequency bands.

• Question 44:

  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
  C. is smaller in diameter

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  Explanation

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

• Question 45:

  Electron flow is from __________.

  A. + to +
  B. - to +
  C. + to
  D. - to
  B. - to +

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  Explanation

  Electron flow can be demonstrated to flow from - to +. The action that takes place in a vacuum tube indicates that the + attracts the - electron to cause it to move from - to +.

• Question 46:

  Impedance is represented by the symbol __________.

  A. XL
  B. R
  C. XC
  D. Z
  D. Z

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  Explanation

  Impedance is the total opposition to current flow in a circuit. It has its own symbol, Z.

• Question 47:

  

  The symbol in this diagram is the symbol for ___________.

  A. lightning
  B. Earth ground
  C. power source
  D. signal ground
  D. signal ground

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  Explanation

• Question 48:

  The two types of diodes used in electronics work are the semiconductor diode and the __________.

  A. vacuum tube diode
  B. full-wave diode
  C. half-wave diode
  D. zener diode
  A. vacuum tube diode

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  Explanation

  The two general types of diodes are the semiconductor and the vacuum tube diode. Both types have their own particular applications and advantages.

• Question 49:

  The primary components in a bipolar junction transistor are the collector, the base and the ___________.

  A. emitter
  B. charger
  C. dispenser
  D. emulcifier
  A. emitter

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  Explanation

• Question 50:

  Parallel resonance occurs in a circuit when __________.

  A. Z = XL
  B. Z=XC
  C. X=2xFc
  D. XL=XC
  D. XL=XC

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  Explanation

  Resonance occurs in any circuit when the inductive reactance and the capacitive reactance are equal.