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Electrical Machines

Electrical Machines
Which single phase motor is used for a refrigerator?

  Universal.
  Split phase.
  Capacitor run.
  Repulsion.

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Electrical Machines
Methods of synchronizing of alternator may be done by

  all of these.
 one dark two bright.
 all bright lamp method.
 all dark lamp method.

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Electrical Machines
Eddy current loss will depends on

All of these
 Frequency
 Flux density
 Thickness

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Electrical Machines
A 250 V DC generator in run at rated speed with no excitation. The open circuit voltage will be

  very small, say about 2 or 3 V.
 about 100 V.
  zero.
  250 V.

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Electrical Machines
In induction motor wound rotor motor is mainly is used in application where

  less costly motor is not required.
  high starting torque.
 power factor is less.
  low starting torque.

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Electrical Machines
Exciting current of an induction motor is

  lesser than power transformer.
  equal as power transformer.
  none of these.
  higher than power transformer.

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MORE MCQ ON Electrical Machines

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