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Electrical Machines

Electrical Machines
Slip exists in

  synchronous motor.
  in both machines.
  induction motor.
  none of above.

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Electrical Machines
Capacitor fitted with ceiling / table fans is of the value of

  2 - 3 µF.
  1 - 2 µF.
 5 - 10 F.
 0.1 µF.

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

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

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Electrical Machines
In DC generators, the cause of rapid brush wear may be

 severe sparking.
 imperfect contact.
 rough commutator surface.
 any of above.

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Electrical Machines
A motor operates in stable region at which of the following slip?

 high slip region
 low slip region
 unity slip
 both 1 and 2

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Electrical Machines
The rotor power output of 3-phase induction motor is 15 KW. The rotor copper losses at a slip of 4% will be

 625 W
 700 W
 650 W
 600 W

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MORE MCQ ON Electrical Machines

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