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

ASVAB ASVAB-SECTION-5 Online Questions & Answers

• Question 91:

  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
  D. soldering the wires together

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  Explanation

  Insulated fittings replace soldering.

• Question 92:

  To cause a current of 10 amperes to flow through 20-ohm resistance, the voltage needed is __________.

  A. 20 volts
  B. 1 volt
  C. 10 volts
  D. 200 volts
  D. 200 volts

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  Explanation

  Ohm's law states that V = IR. V = 10 ?20 = 200.

• Question 93:

  

  A current meter is connected to a circuit as shown.

  What does the current meter read?

  A. 3. 0 amperes
  B. 4. 5 amperes
  C. 13. 5 amperes
  D. 15 amperes
  B. 4. 5 amperes

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  Explanation

  The current through the meter is equal to the current through R1. The current through R1 is 45 V / 10 = 4. 5 A

• Question 94:

  A semiconductor describes elements that have __________ electrons in their valance shell.

  A. 3
  B. 4
  C. 2
  D. 1
  B. 4

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  Explanation

• Question 95:

  A series circuit would best be described as ___________.

  A. an electrical circuit with only a single path for the electrical current
  B. an electrical circuit with multiple paths for the electrical current
  C. an electrical circuit with no path for the electrical current
  D. an electrical circuit with two paths for the electrical current
  A. an electrical circuit with only a single path for the electrical current

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  Explanation

• Question 96:

  When a circuit breaker trips, in what position will you find the operating handle?

  A. on position
  B. off position
  C. half way between on and off
  D. three-fourths of the way between the on position and the off position
  C. half way between on and off

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  Explanation

  Conventional circuit breaker handles have four positions: on, off, trip, and reset. When tripped, the handle moves to the middle position.

• Question 97:

  Two 8-ohm speakers are connected in parallel to an amplifier with a 24-volt output. What is the voltage across each speaker?

  A. 6 volts
  B. 12 volts
  C. 18 volts
  D. 24 volts
  D. 24 volts

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  Explanation

  Resistances in parallel have the same voltage across them.

• Question 98:

  An insulator is a material with __________.

  A. many free electrons
  B. few free electrons
  C. many free protons
  D. many free ions
  B. few free electrons

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  Explanation

  An insulator is a material that has tightly held electrons and very few, if any, free electrons.

  This means that it can be used to protect the conductor since the insulator will not allow free electrons from the conductor to knock lose any tightly held electrons of the insulator material.

• Question 99:

  The television broadcast standard used in the United States is __________.

  A. PAL
  B. NTSC
  C. SECAM
  D. SSTC
  B. NTSC

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  Explanation

  NTSC stands for National Television Standards Committee. The system is also used in Japan. PAL and SECAM are used in other countries.

• Question 100:

  A transistor is also called a __________.

  A. rectifier
  B. cathode
  C. crystal amplifier
  D. semiconductor
  C. crystal amplifier

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  Explanation

  Crystal amplifier is another name for transistor.