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Electrical Machines

Electrical Machines
The current drawn by a DC motor at the time of starting is

 Zero.
 Very high.
 Normal.
 Very low.

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Electrical Machines
Which of the following starter is sufficient to start the DC series motor ?

 2 point starter
All of these
 4 point starter
 3 point starter

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Electrical Machines
When the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars develop

  induction generator torque.
  induction motor torque.
  synchronous motor torque.
  DC motor torque.

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Electrical Machines
Which of the following is/are effects of armature reaction?

All of these
 increase the iron loss
 increase the maintenance and repair
 increases the design cost

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

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

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Electrical Machines
Which of the following voltage regulator is preferred for providing large values of load current?

None of these
  Transistor shunt regulator.
  Zener diode shunt regulator.
  Transistor series regulator.

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MORE MCQ ON Electrical Machines

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