Electrical Machines
Which of the following statement is true for an AC synchronous motor?

 It is a step angled motor.
 It is a high reluctance motor.
  It is a constant speed motor.
 It is a variable speed motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In large sized DC machines the compensating windings are provided to

  neutralize voltage induced in coil due to fluctuation of l
 reduce eddy current losses by providing local short circuits.
None of these
 compensate for the decrease in speed due to increase of load.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a synchronous motor when the rotor speed exceeds the synchronous speed during hunting

  the damper bars develop synchronous motor torque.
  the damper bars develop induction motor torque.
  negative sequence currents are generated.
  the damper bars develop induction generator torque.

ANSWER DOWNLOAD EXAMIANS APP