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Electrical Machines

Electrical Machines
In single phase rotary converter the number of slip rings will be

 six.
 four.
 two.
 three.

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Electrical Machines
Universal motor have which of the following application?

  Food mixer.
  Lift.
  Traction.
  Domestic pump.

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Electrical Machines
In a synchronous motor electromagnetic power varies

 inversely as applied voltage
None of these
 directly as square of applied voltage
 directly as applied voltage

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Electrical Machines
For power factor improvement the synchronous motor is to be

 heavily loaded and over excited
 lightly loaded and underecited
 heavily loaded and underexcited
 lightly loaded and over excited

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Electrical Machines
If the field of a dc shunt motor gets opened while the motor is running, then the

 armature will oscillate about original speed as the mean speed
 motor will become slow.
 motor will attain dangerously high speed
 armature current will drop

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Electrical Machines
In an alternator the voltage generated per phase is proportional to

  flux per pole.
All of these
  number of turns in coil.
  frequency of waveform.

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MORE MCQ ON Electrical Machines

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