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Electrical Machines

Electrical Machines
Flux density under leading pole tips in case of generator will

 decrease
None of these
 either increase or decrease
 increase

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Electrical Machines
Capacitor start capacitor run provides

  high staring torque only.
  high staring torque and high power factor.
  none.
  high power factor only.

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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

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

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Electrical Machines
Which of the following statements is/are correct ?

 Both A and B.
 Compensating winding will act under the pole.
 Inter pole winding will act in interpolar region.
None of these

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Electrical Machines
DC machine windings are

 short pitched
 either of these
None of these
 full pitched

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Electrical Machines
In a seperately excited DC Motor if field current is increased, it will

 Reduce starting torque.
 Reduce armature heating.
 Increase speed
 Increase acceleration duration.

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MORE MCQ ON Electrical Machines

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