Chapter 4 Quiz

  1. The rotating part of an electric motor is called the
    1. Rotor
    2. Stator
    3. Windings
    4. None of the above
  2. When a fuse is blown, it creates a closed circuit.
    1. True
    2. False
  3. __________ allow higher current to be drawn for motor start up without tripping the breaker.
    1. Overload relays
    2. Transformers
    3. Disconnect switches
    4. Fuses
  4. The most commonly used AC motors are
    1. Wound synchronous motors
    2. Single phase motors
    3. Squirrel cage induction motors
    4. AC/DC motors
  5. When there is no power to a relay, the common terminal and the __________ terminal will have continuity.
    1. Normally open
    2. Normally closed
    3. Normally open and normally closed
    4. None of the above
  6. The purpose of the air gap in a motor is to prevent the rotor and stator from contacting each other.
    1. True
    2. False
  7. Motors can operate effectively at ±10% of the designed voltage.
    1. True
    2. False
  8. The stationary part of an electric motor is called the
    1. Rotor
    2. Stator
    3. Windings
    4. None of the above
  9. Fuses and breakers are both used to protect equipment, but the difference is a fuse can be reset.
    1. True
    2. False
  10. Single phase induction motors are not
    1. Common
    2. Squirrel cage
    3. Synchronous
    4. Self-starting