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Electrical Machines

Electrical Machines
Slip rings of an induction motors are made of

  phosphor bronze.
  carbon.
  stainless steel.
  aluminium.

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Electrical Machines
Ratio of starting torque to full load torque is minimum in

  Shunt motor.
  Series motor.
  Cumulative compound motor.
  Differential compound motor.

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Electrical Machines
Which single phase motor is used for a refrigerator?

  Repulsion.
  Universal.
  Capacitor run.
  Split phase.

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Electrical Machines
A DC generator can be considered as

 rectifier.
 prime mover.
 power pump.
 rotating amplifier.

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Electrical Machines
If terminal voltage of one 1000 rpm shunt motor is reduced to half the speed of the motor will be

 1000 rpm
 2000 rpm
 250 rpm
 500 rpm

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Electrical Machines
In a synchronous motor hunting can be reduced to minimum possible by

  designing the motor for adequate synchronizing power.
  any of above methods.
  using a flywheel.
  providing damper winding in the rotor pole faces.

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MORE MCQ ON Electrical Machines

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