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Electrical Machines

Electrical Machines
A DC generator beyond critical resistance will generate

 maximum power.
 maximum voltage.
 maximum current.
 no voltage.

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Electrical Machines
Direction of the current in the compensating winding is________ to the direction of current in the armature conductors?

 exactly opposite
 same
None of these
 either of these

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Electrical Machines
Demagnetization effects which of the following?

 reduces the terminal voltage
 reduction in main field flux
 commutation
 both B and C

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Electrical Machines
A 3-phase, 2 pole, 12 slot synchronous machine is operating at synchronous speed. Find the slot angle?

 18°
 30°
 20°
 60°

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Electrical Machines
A compound motor has

  both shunt and series field winding.
  only shunt field winding.
  tertiary winding.
  only series field winding.

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Electrical Machines
Lap winding is prefered for which type of machines?

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

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MORE MCQ ON Electrical Machines

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