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Electrical Machines

Electrical Machines
What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05?

 20.
  0.05.
 1.1.
  0.905.

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Electrical Machines
Which of the following motor has negative speed regulation?

 Differential compound motor
 Series motor
 Cumulative compound motors
 Shunt motor

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Electrical Machines
When two DC series motors are connected in parallel, the resultant speed is

 more than normal speed.
 normal speed.
 zero.
 less than normal speed.

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Electrical Machines
A shaded pole single phase induction motor can be used for

 wet grinders
 personal computers as cooling fan
 food mixers
 tape recorders

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Electrical Machines
In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch

 100
 1
 10
 50

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Electrical Machines
A crusher is equipped with

 Reluctance motor.
 Synchronous motor.
 Slip ring induction motor.
 DC shunt motor.

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