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Electrical Machines

Electrical Machines
What is the phase difference between two windings of A.C servomotor ?

 120°.
 60°.
 30°.
 90°.

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Electrical Machines
What is the actual arrangement of series wound generator?

 Armature and field both are parallel.
 Armature winding is in series with load.
  Armature and field both are in series with the load.
 Armature and field both are connected.

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Electrical Machines
Hopkinson test is conducted under which of the following condition?

 any of the above
 no load
 full load
 half load

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Electrical Machines
In a 6 pole DC machine, 90 mechanical degrees correspond to which of the following electrical degree?

 45.
 30.
  270.
 180.

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Electrical Machines
Which of following DC generator will be in a position to build up without any residual magnetism in the field?

  Compound.
  Series.
 Shunt.
  Separately excited.

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Electrical Machines
Wave winding is prefered for which of the following rating?

 high current and low voltage
 high current and high voltage
 low current and low voltage
 low current and high voltage

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MORE MCQ ON Electrical Machines

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