During the starting of the 3-phase synchronous motor by damper bars, – McqOptions

MCQOPTIONS

1.	During the starting of the 3-phase synchronous motor by damper bars, the field winding is usually short circuited so that starting torque is equal to __________
A.	induction motor torque plus an additional torque produced by short circuited field winding
B.	induction motor torque
C.	electromagnetic torque
D.	reluctance torque due to rotor saliency
Answer» B. induction motor torque

Discussion

No Comment Found

Related MCQs

Squirrel cage bars placed in the rotor pole faces of a 3-phase alternator help in reducing hunting.
To start the synchronous motor, its field winding should be __________
During the starting of the 3-phase synchronous motor by damper bars, the field winding is usually short circuited so that starting torque is equal to __________
For running a 750 kW compressor, a synchronous motor is preferred because of __________
The power load angle characteristic as maximum for a load angle of __________
If the 3-phase alternator has 4 poles and has synchronous speed of 120 rad/s. Then the mechanical speed in rad/sec is?
Reactive power flow in synchronous machine can be controlled by __________
If the synchronous machine is loaded from floating conditions, the synchronous motor begins to operate at __________
If the synchronous machine is loaded from floating conditions, the alternator begins to operate at __________
The reactive power in synchronous machine is proportional to __________