The coupling angle or load angle of synchronous motor is defined as the angle between the__________?
A. rotor and stator teethB. rotor and the stator poles of opposite polarity
C. rotor and the stator poles of the same polarity
The maximum torque which a synchronous motor will develop at rest for any angular position of the rotor, at rated stator supply voltage and frequency, is known as__________?
A. locked-rotor torque
B. synchronous torque
C. pull up…
If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will__________?
B. run as induction motor
C. function as static condenser
D. burn with dense smoke…
The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as___________?
A. pull-up torqueB. pull-in torque
C. pull-out torque
D. none of the…
For power factor correction, synchronous motors operate at____________?
A. no-load and greatly over-excited fields
B. no-load and under-excited fields
C. normal load with minimum excitation
D. normal load with zero excitation…
Which of the following losses is not dissipated by the stator core surface in a synchronous motor?
A. Eddy current losses in the conductors
B. Iron losses in the stator
C. Copper losses in the slot portion of the conductorsD.…