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Electrical Machines

Electrical Machines
In alternator, the rotary part is

  magnetic field poles.
 core.
 none of these.
 armature.

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Electrical Machines
In a DC machine, the angle between the stator and rotor fields is

 dependent upon the load.
 0o.
 90o.
 180o.

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Electrical Machines
Synchronous condensers are used to

All of these
 improve starting torque
 reduce hunting
 improve the power factor

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Electrical Machines
Which of the following motor is expensive for same Kw output rates?

 AC single phase motor.
 Induction motor.
 Synchronous motor.
 DC Shunt Motor

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Electrical Machines
In a DC generator the emf generated by the armature is maximum when

  rate of change of flux is maximum.
 shaft rotation is high.
 induced voltage is high.
 rate of change of flux is minimum.

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Electrical Machines
Series booster is a

 shunt wound DC generator.
 separately excited DC generator.
 permanent magnet DC generator.
  series wound DC generator.

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MORE MCQ ON Electrical Machines

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