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Electrical Machines

Electrical Machines
What is power factor of a 3 - φ induction motor at no load?

  Same as full load.
  Equal to 1.
  High.
  Low.

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Electrical Machines
Universal motor have which of the following application?

  Lift.
  Food mixer.
  Traction.
  Domestic pump.

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Electrical Machines
When the excitation of normally operating unloaded, salient pole synchronous motor suddenly gets disconnected, it continues to run as a

 variable reluctance motor.
 induction motor.
 DC motor.
 switched reluctance motor.

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Electrical Machines
Short circuiting is caused in the armature winding due to

 failure of insulation between two commutator bars.
  failure of insulation between two turns of coil.
  any of above.
  grounding of two or more turns of the same coil.

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Electrical Machines
Which of the following motor is used in grinders?

  Split phase IM.
  Capacitor start IM.
  Capacitor start capacitor run IM.
  Synchronous motor.

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Electrical Machines
Which type motors are preferred for lathes?

 Either A or B.
 DC shunt motors.
 Synchronous motor.
 Squirrel Cage induction motor.

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MORE MCQ ON Electrical Machines

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