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Electrical Machines

Electrical Machines
Which of the following is not a part of transformer?

 Conservator tank.
 Radiator.
 Tap changer.
  Commutator.

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Electrical Machines
_____________ types of induction motor are widely used.

  Single phase IM.
  Slip ring IM.
  Three phase IM.
  Squirrel cage IM.

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Electrical Machines
Maximum power developed by a synchronous motor depends on

 excitation and load angle
 supply voltage, load angle and excitation
 supply voltage and excitation
 supply voltage and load angle

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Electrical Machines
For very sensitive and wide speed control, the preferable control method is

 Multiple voltage control.
 Ward-Leonard control.
 Field control.
 Armature control.

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Electrical Machines
Which of the DC Motor use flywheel?

 Shunt motor.
 Series motor.
 Cumulatively compound motor.
 Differently compared motor.

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Electrical Machines
What type of dielectric material is used in capacitors used for fans and for power factor correction?

  Oil impregnated paper.
  Glass.
  Mica.
  Vacuum.

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