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Electrical Machines

Electrical Machines
The output power of a dc motor is given by

  EbIa.
  none of these.
  EbIa2.
  EIa.

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Electrical Machines
If the field current is reduced to zero the maximum power developed by alternator is

  2.73 KW.
 0.9103 KW.
 1.644 KW.
 5.46 KW.

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Electrical Machines
When a synchronous motor is running at synchronous speed, the damper winding produces

 eddy current torque.
 damping torqe.
 no torque.
 both 1 and 2.

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Electrical Machines
Stepper motor is used in

 computer printers
 food processing
 traction
All of these

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Electrical Machines
A single phase, 2 KV alternator has an armature resistance of 0.8 ohms and 4.94 ohms respectively. The voltage regulation of the alternator at 100 a load 0.8 loading power factor is

 14%.
 7%.
 0%.
  8.9%.

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Electrical Machines
A series motor is efficiently suitable for

  high starting torque operation.
 low starting torque operation.
 constant speed operation.
 none of these.

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MORE MCQ ON Electrical Machines

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