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Electrical Machines

Electrical Machines
Iron losses in a DC machine are independent of variation in

  voltage.
 speed.
  load.
  speed and voltage.

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Electrical Machines
It is an advisable to use auto transformer if the transformation ratio is

 0.25.
 0.5.
 near to 1.
 Greater than 1.

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Electrical Machines
The emf induced in a conductor rotating in a bipolar field is

 DC.
 both of above.
 AC.
None of these

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Electrical Machines
In case of DC Shunt Motor, the speed will____ if the voltage increases, neglecting armature saturation.

 decrease.
 be unpredictable.
 remain the same.
 increase

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Electrical Machines
Synchronous condensers are used to

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

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Electrical Machines
In shapers and slotters which motor are preferred?

  Synchronous motor.
  Double cage motor.
  Slip ring IM.
  Squirrel cage IM.

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MORE MCQ ON Electrical Machines

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