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Electrical Machines

Electrical Machines
The heat generated in the transformer is dissipated mainly by

 radiation.
All of these
 conduction.
  convection.

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Electrical Machines
DC machine windings are

 short pitched
None of these
 full pitched
 either of these

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Electrical Machines
When the excitation of normally operating unloaded, salient pole synchronous motor suddenly gets disconnected, it continues to run as a

 DC motor.
 induction motor.
 switched reluctance motor.
 variable reluctance motor.

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Electrical Machines
The direction of rotation of conductor of a DC motor can be determined by

 Lenz's law.
 Fleming's left hand rule.
 Ampere law.
 Fleming's right hand rule.

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Electrical Machines
We can apply source transformation to voltage source when a resistance is connected to it in

  13 HP.
 15 HP.
  10 HP.
 14 HP.

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Electrical Machines
Iron losses in a DC machine are independent of variation in

  voltage.
  speed and voltage.
 speed.
  load.

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MORE MCQ ON Electrical Machines

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