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Electrical Machines

Electrical Machines
The wattage rating of a ceiling fan motor will be

 10 - 20 W.
 250 - 500 W.
 200 - 250 W.
  50 - 150 W.

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Electrical Machines
The principle of operation of a 3 - Φ induction motor is almost similar to that of

  synchronous motor.
  capacitor start induction motor.
  transformer with secondary short circuited.
  repulsion start induction motor.

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Electrical Machines
Compensating windings is placed in which part of a D.C motor?

 On yoke in the inter pole gap.
None of these
 On armature.
  On yoke in the pole faces.

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Electrical Machines
For the same power output rating and full load speed, the motor will have poorest starting torque, is

 Series.
 Cummulative compound.
 Differential compound.
  Shunt.

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Electrical Machines
In field flux method speed control of DC Motor is

 constant power drive above base speed.
 constant torque drive above the base speed.
 constant torque drive below the base speed.
 constant hp drive below the base speed.

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Electrical Machines
Tertiary winding in a transformer is mostly

  delta connected.
 star connected.
 zig - zag star connected.
 zig - zag delta connected.

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MORE MCQ ON Electrical Machines

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