A. improve power factor
B. increase overload capacity
C. reduce fluctuations in torque
D. to improve torque
Related Mcqs:
- In a capacitor start motor, the phase displacement between starting and running winding can be nearly__________?
A. 10°
B. 30°
C. 60°
D. 90° - In split-phase motor auxiliary winding is of___________?
A. thick wire placed at the bottom of the slots
B. thick wire placed at the top of the slots
C. thin wire placed at the top of the slots
D. thin wire placed at the bottom of the slots - Centrifugal switch disconnects the auxiliary winding of the motor at about ______ percent of synchronous speed?
A. 30 to 40
B. 70 to 80
C. 80 to 90
D. 100 - In a two value capacitor motor, the capacitor used for running purposes is_______________?
A. air capacitor
B. paper spaced oil filled type
C. ceramic type
D. a.c. electrolytic type - A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will______________?
A. start and then stop
B. start and run slowly
C. start and run at rated speed
D. not start at all - In a capacitor start single-phase motor, when capacitor is replaced by a resistance____________?
A. torque will increase
B. the motor will consume less power
C. motor will run in reverse direction
D. motor will continue to run in same direction - In a split phase motor, the running winding should have?
A. high resistance and low inductance
B. low resistance and high inductance
C. high resistance as well as high inductance
D. low resistance as well as low inductiance - The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be___________?
A. at the end connections
B. at the end terminals
C. anywhere on the winding inside a slot
D. at the slot edge where coil enters or comes out of the slot - The capacitors used in single-phase capacitor motors have no__________?
A. voltage rating
B. dielectric medium
C. polarity marking
D. definite value - After the starting winding of a single phase induction motor is disconnected from supply, it continues to run only on ______________?
A. running winding
B. rotor winding
C. field winding
D. compensating winding
