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Electrical Machines

Electrical Machines
From no load to full load the slip will

 slightly increase.
None of these
 slightly decrease.
 not change.

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Electrical Machines
The power flow of a dc motor, with respect to a DC generator is

  increased.
  none of these.
  modified.
  reversed.

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Electrical Machines
Which of the following machine will have maximum efficiency?

 Induction motor.
 Electrical power generator.
 DC motor.
  Electrical power transformer.

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Electrical Machines
The use of double squirrel cage winding on the rotor provides

 higher efficiency.
 reduced starting torque.
  a large starting torque.
 low noise.

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Electrical Machines
Which of the following rotor requires damper winding?

 Cylindrical rotor.
 Salient pole rotor.
 Both type rotor.
None of these

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Electrical Machines
The main disadvantage(s) of the ward-Leonard system is/are

 high maintenance cost.
 all of above.
 high initial cost.
 poor overall efficiency.

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MORE MCQ ON Electrical Machines

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