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Electrical Machines

Electrical Machines
Example of double excited machine is

 Both are correct.
 DC Shunt Motor
None of these
 Synchronous motor.

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Electrical Machines
Capacitor start capacitor run provides

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

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Electrical Machines
Centrifugal switch is absent in which of the single phase induction motor?

None of these
 Shaded pole motor.
  PSC (permanent split capacitor) motor.
 Split phase motor.

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Electrical Machines
If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is

 200 V
 460 V
 115 V
 230 V

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Electrical Machines
What is the actual arrangement of series wound generator?

 Armature and field both are parallel.
 Armature and field both are connected.
 Armature winding is in series with load.
  Armature and field both are in series with the load.

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Electrical Machines
In a dc machine 72 number of coils are used. Find the number of commutator segments required?

 36
 37
 72
 74

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MORE MCQ ON Electrical Machines

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