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Electrical Machines

Electrical Machines
The output power of any electrical motor is taken from the

 Field.
 Armature.
 Coupling mounted on the shaft.
 Motor frame.

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Electrical Machines
The power flow of a dc motor, with respect to a DC generator is

  increased.
  reversed.
  none of these.
  modified.

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

 Differential compound.
 Cummulative compound.
 Series.
  Shunt.

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Electrical Machines
The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type

 series generator.
  shunt generator.
  short - shunt generator.
  level compound.

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Electrical Machines
When a synchronous motor is running at synchronous speed, the damper winding produces

 damping torqe.
 both 1 and 2.
 eddy current torque.
 no torque.

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Electrical Machines
A 3 - Φ, 6 pole, 50 Hz IM has a rotor speed of 987 rpm find rotor frequency?

  0.65 Hz.
 0.75 Hz.
 0.70 Hz.
  60 Hz.

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MORE MCQ ON Electrical Machines

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