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

ASVAB ASVAB-SECTION-5 Online Questions & Answers

• Question 151:

  When current flows through a wire, the following influences are present __________.

  A. amperes and ohms only
  B. voltage, watts, and ohms only
  C. voltage and amperes only
  D. voltage, ohms, and amperes
  D. voltage, ohms, and amperes

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  Explanation

  Voltage, ohms, and amperes are always present when current flows through a wire.

• Question 152:

  Millihenries are related to __________.

  A. capacitors
  B. inductors
  C. relays
  D. transformers
  B. inductors

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  Explanation

  Inductors are rated in millihenries.

• Question 153:

  

  This diagram illustrates an electrical circuit wired in ___________.

  A. series-parallel
  B. parallel-parallel
  C. series
  D. parallel
  D. parallel

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  Explanation

• Question 154:

  A capacitor of 100 micro farads has a capacity of __________.

  A. 100 picofarads
  B. 10 picofarads
  C. 100,000,000 picofarads
  D. 10,000 picofarads
  C. 100,000,000 picofarads

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  Explanation

  A microfarad is 1 million picofarads. Therefore, if you wish to convert micro farads to picofarads, you have to multiply by 1 million. That means the answer is "100,000,000 picofarads" because 100 times 1 million is 100 million.

• Question 155:

  A junction diode is used for __________.

  A. rectifying power-line frequencies and lower currents.
  B. rectifying power-line frequencies and higher currents.
  C. rectifying higher frequencies at lower currents.
  D. rectifying higher frequencies at higher currents.
  B. rectifying power-line frequencies and higher currents.

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  Explanation

  A junction diode has a larger surface area than a point-contact diode, therefore it can be used to handle larger currents at power-line frequencies.

• Question 156:

  How many paths of electrical flow can be found in a series circuit?

  A. one
  B. two
  C. two or more
  D. It can't be determined from the information given.
  A. one

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  Explanation

  An example of a series circuit would be a string of Christmas lights. If you break the circuit's path at any point, electricity will stop flowing and the lights will not work.

• Question 157:

  Inductive reactance is found by using __________.

  A. XL = 2FC
  B. XL = 2FL
  C. XL = R
  D. XL = Z
  B. XL = 2FL

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  Explanation

  The formula for finding inductive reactance has to utilize the L in inductance and the fixed constant 2 as well as taking into consideration the frequency of the power applied to the circuit.

• Question 158:

  

  Given the electrical circuit in the image provided, what is the current in resistor R1?

  A. 0.5 amperes
  B. 7. 66666666661 amperes
  C. 0.25 amperes
  D. 0.16666666667 amperes
  D. 0.16666666667 amperes

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  Explanation

• Question 159:

  A properly soldered connection will appear __________.

  A. shiny
  B. dull
  C. dark
  D. greasy
  A. shiny

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  Explanation

  Shiny joints indicate a properly soldered connection.

• Question 160:

  An AA battery produces a potential difference of 1.5 V. Four AA batteries are placed in series to power a portable FM radio. What is the total voltage of the radio?

  A. 0.75 V
  B. 1.5 V
  C. 3. 0 V
  D. 6. 0 V
  D. 6. 0 V

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  Explanation

  Voltages in series are added to determine the total voltage. 1.5 V + 1.5 V + 1.5 V + 1.5 V = 6. 0 V.