Quiz  /  Ac Generator MCQ

  • 1. 
    In A.C generator increasing the no. of turns in the coil

  • Decreases the Electromotive force (EMF)
  • Electromotive force (EMF) remains the same
  • Increases the Electromotive force (EMF)
  • Electromotive force (EMF) becomes zero

  • 2. 
    The Electromotive force (EMF) developed by the generator depends upon

  • Area of rotating wire
  • length of rotating wire
  • Radius of wire
  • size of magnet

  • 3. 
    The metal detectors installed at airports and other places for security purpose are based on the principle of

  • potential difference
  • electromagnetic difference
  • electromagnetic induction
  • potential energy

  • 4. 
    If the coil is placed perpendicular to field lines then the number of lines passing through the coil is

  • Minimum
  • maximum
  • zero
  • maybe maximum or minimum

  • 5. 
    In alternative current generator, AC current reverses its direction

  • 10 times per second
  • 20 times per second
  • 60 times per second
  • 50 times per second

  • 6. 
    Name two main parts of an AC generator

  • Stator
  • Rotor
  • Both 1 and 2
  • None of these

  • 7. 
    AC generator converts

  • Mechanical energy to electrical energy
  • Electrical energy to mechanical energy
  • Heat energy to mechanical energy

  • 8. 
    The direction of induced emf or current is indicated by

  • Fleming’s left-hand rule
  • Fleming’s right-hand rule
  • Faraday’s law of electromagnetic induction
  • None of these
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