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Electrical Machines

Electrical Machines
Regenerative braking is not found in which motor?

 Induction motor.
 DC compound.
 DC shunt.
  DC series.

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Electrical Machines
In induction motor especially the cage rotors slots are nearly parallel to shaft axis. This is called

  slip.
  skewing.
  crawling.
  cogging.

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Electrical Machines
The torque angle, in a synchronous motor, is the angle between

  the rotating stator flux and rotor flux.
  the supply voltage and the back emf.
  magnetizing electric current and back emf.
None of these

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Electrical Machines
Lamination of core are generally made of

 silicon steel.
 carbon.
 cast iron.
 stainless steel.

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Electrical Machines
Which of the following rotor requires damper winding?

 Cylindrical rotor.
 Both type rotor.
 Salient pole rotor.
None of these

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Electrical Machines
Eb/V ratio of a DC motor is an indication of

 Running Torque.
 Starting torque.
 Speed regulation.
  Effiency.

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MORE MCQ ON Electrical Machines

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