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Electrical Machines

Electrical Machines
Universal motor have which of the following application?

  Traction.
  Food mixer.
  Domestic pump.
  Lift.

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Electrical Machines
Hunting in a synchronous motor takes place

  motor is under loaded.
  when supply voltage fluctuates.
  when load varies.
  when power factor is unity.

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Electrical Machines
Which of the following is/are not a self starting motor?

 both 1 and 2
 3-phase induction motor
 1-phase induction motor
None of these

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Electrical Machines
Tap changer is generally provided in

 voltage transformer.
  power transformer.
 earthing transformer.
 current transformer.

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Electrical Machines
In shunt dc motor the direction of rotation of the motor will reversed. When

  only armature terminals are reversed.
  none of above.
  only field terminals are changed.
  either field terminals are reversed or armature terminals are reversed.

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Electrical Machines
In a DC Shunt Motor if the load current increases then field flux

 decreases.
 increases.
 decreases
 remains constant.

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MORE MCQ ON Electrical Machines

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