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Electrical Machines

Electrical Machines
Which of the following relation is correct?

 Xd = Xq.
None of these
 Xd > Xq.
 Xd < Xq.

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Electrical Machines
Which of the following motors is/are widely used?

 slip ring induction motor
 squirrel cage induction motor
 either of these
None of these

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Electrical Machines
In single phase rotary converter the number of slip rings will be

 two.
 six.
 three.
 four.

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Electrical Machines
Which of the following is minimized by laminating the core of a transformer?

 Hysteresis loss.
 Eddy current loss.
 Copper loss.
 Stray loss.

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Electrical Machines
In travelling cranes for hoisting and lowering which type of motor is preferred?

  DC series motor.
  Single phase induction motor.
  AC slip ring motor.
  Synchronous motor.

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

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

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