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Electrical Machines

Electrical Machines
The armature resistance of the dc motor is generally of the range

  0.1 ohm.
  0.5 ohm.
 100 ohm.
 50 ohm.

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Electrical Machines
In double cage induction motor, the inner cage offers

  high resistance and low reactance.
  low resistance and high reactance.
  low resistance and low reactance.
  high resistance and high reactance.

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Electrical Machines
A 4 pole 50 Hz induction motor is running at 1470 rpm. The frequency of rotor current is

 5 Hz
 50 Hz
 0 Hz
 1 Hz

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Electrical Machines
A compound motor has

  only series field winding.
  both shunt and series field winding.
  only shunt field winding.
  tertiary winding.

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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

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

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Electrical Machines
The crawling in the induction motor is caused by

 low voltage supply
 high loads
 harmonics developed in the motor
 improper design of stator laminations

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MORE MCQ ON Electrical Machines

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