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Electrical Machines

Electrical Machines
Hysteresis loop represents the area of

 copper loss
 total iron losses
 hysteresis loss
 eddy current loss

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Electrical Machines
The type of DC motor generally used for shears and punches is

 Series motor.
 Differential compound motor.
 Shunt motor.
 Cummulative compound motor.

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Electrical Machines
Synchronous condensers are used to

 improve starting torque
 reduce hunting
 improve the power factor
All of these

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Electrical Machines
Slip exists in

  synchronous motor.
  none of above.
  induction motor.
  in both machines.

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Electrical Machines
Shunt field of DC generators consists of--------number of turns and ---------- conductors respectively

 large and thick
 less and thick
 large and thin
 less and thin

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Electrical Machines
In electric locomotives which of the following motor are used ?

 DC Shunt motor.
 DC compound motor.
 Synchronous motor.
 DC series motor.

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MORE MCQ ON Electrical Machines

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