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

ASVAB ASVAB-SECTION-5 Online Questions & Answers

• Question 71:

  What does RMS stand for?

  A. Root Mean Square
  B. Resistance Measurement System
  C. Real Metric Standards
  D. Realistic Matrix Stems
  A. Root Mean Square

  ---

  Explanation

  Root Mean Square is the peak value of voltage multiplied by 0.707 (sine 45).

• Question 72:

  Given Ohm's law, if voltage increases and current remains the same, then ___________.

  A. induction increases
  B. resistance decreases
  C. power decreases
  D. resistance increases
  D. resistance increases

  ---

  Explanation

• Question 73:

  A fuse with a higher-than-required rating used in an electrical circuit __________.

  A. improves safety
  B. increases maintenance
  C. may not work properly
  D. is less expensive
  C. may not work properly

  ---

  Explanation

  Because fuses are designed to prevent current overload at a specific level, a fuse with a high rating may not work properly for a circuit rated at a lower level.

• Question 74:

  What special type of diode is commonly used to regulate voltage?

  A. capacitor
  B. transistor
  C. Zener diode
  D. LED
  C. Zener diode

  ---

  Explanation

  Zener diodes are available in a variety of voltages.

• Question 75:

  Which of the following isn't a component of a DC motor?

  A. rotor bars
  B. armature
  C. field poles
  D. yoke
  A. rotor bars

  ---

  Explanation

  Rotor bars are found only on AC induction motors.

• Question 76:

  A crossover network is used to __________.

  A. direct the proper frequency range to the right speaker
  B. eliminate noise
  C. filter out high frequencies
  D. filter out low frequencies
  A. direct the proper frequency range to the right speaker

  ---

  Explanation

  A crossover network is designed to make sure that the right frequencies get to a speaker so it can reproduce them better.

• Question 77:

  1.5 volts sent through a 20 K resistor would result in __________ of current.

  A. 7. 5 milliamperes
  B. 0.075 milliamperes
  C. 75 milliamperes
  D. 0.000075 milliamperes
  B. 0.075 milliamperes

  ---

  Explanation

• Question 78:

  Electrical power is expressed in ___________.

  A. ohms
  B. volts
  C. watts
  D. current
  C. watts

  ---

  Explanation

• Question 79:

  Electricity is defined as __________.

  A. the flow of electrons along a conductor
  B. the flow of ions along a conductor
  C. the movement of charges
  D. static electricity
  A. the flow of electrons along a conductor

  ---

  Explanation

  The definition of current electricity is the flow of electrons. Static electricity is conceived of as standing still or collecting on surfaces

• Question 80:

  An ammeter measures __________.

  A. Resistance
  B. Current
  C. Voltage
  D. Capacitance
  B. Current

  ---

  Explanation

  An ammeter measures current.