Ac & DC Motor Video Questions

10 Questions | Total Attempts: 273

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Ac & DC Motor Video Questions

Questions about material in AC and DC motors video


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Questions and Answers
  • 1. 
    1. 'Basically, an electric motor is a device that converts
    • A. 

      A. Mechanical energy into electrical energy

    • B. 

      B. Heat energy into electrical energy

    • C. 

      C. Electrical energy into mechanical energy

    • D. 

      D. Mechanical energy into potential energy

  • 2. 
    1. A magnetic field consists of a series of lines called what?
    • A. 

      A. Magnetic lines of flux

    • B. 

      B. Current lines

    • C. 

      C. Polarity lines

    • D. 

      D. Field nets

  • 3. 
    "The movement of an object as a result of the interaction of two separate magnetic fields is called what?"
    • A. 

      A. Current flow

    • B. 

      B. Motor action

    • C. 

      C. Induction

    • D. 

      D. Voltage

  • 4. 
    "What effect do two like magnetic poles have on each other?"
    • A. 

      A. They attract each other

    • B. 

      B. They dissipate each other's magnetic field.

    • C. 

      C. They increase each other's magnetic field

    • D. 

      D. They repel each other

  • 5. 
    "When is the attraction between two unlike magnetic poles the strongest?"
    • A. 

      A. When they're closest to each other

    • B. 

      B. When they're farthest away from each other

    • C. 

      C. When they're 90 degrees from each other

    • D. 

      D. When they've just passed each other

  • 6. 
    "A magnetic field consists of a series of lines known as magnetic lines of
    • A. 

      A. Voltage

    • B. 

      B. Amperage

    • C. 

      C. Flux

    • D. 

      D. Thrust

  • 7. 
    Current that continually reverses direction is known as
    • A. 

      A. AC

    • B. 

      B. DC

    • C. 

      C. EC

    • D. 

      D. RC

  • 8. 
    "When current flows through a wire that's shaped in the form of a coil, what happens to the individual flux lines that are produced?"
    • A. 

      A. They are grounded.

    • B. 

      B. They oppose each other

    • C. 

      C. Together, they create one large magnetic field

    • D. 

      D. They cancel each other

  • 9. 
    "A bar magnet rotates when alternating current flows through the coils. In terms of AC motor operation, the bar magnet can be referred to as what?"
    • A. 

      A. Stator

    • B. 

      B. Commutator

    • C. 

      C. Rotor

    • D. 

      D. Impeller

  • 10. 
    "A bar magnet rotates when alternating current flows through the coils. In terms of AC motor operation, the coils can be referred to as what?"
    • A. 

      A. Motor controller

    • B. 

      B. Commutator

    • C. 

      C. Rotor

    • D. 

      D. Stator