A. magnetic relay
B. thermal relay
C. centrifugal switch
D. none of the above
Related Mcqs:
- 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 - If starting winding of a single-phase induction motor is left in the circuit, it will____________?
A. run faster
B. spark at light loads
C. draw excessive current and overheat
D. run slower - The starting winding of a single-phase motor is placed in_________?
A. armature
B. field
C. rotor
D. stator - In a capacitor start motor, the phase displacement between starting and running winding can be nearly__________?
A. 10°
B. 30°
C. 60°
D. 90° - 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 - In which single-phase motor, the rotor has no teeth or winding ?
A. Split phase motor
B. Reluctance motor
C. Hysteresis motor
D. Universal motor - The rotor developed by a single-phase motor at starting is___________?
A. more than i.he rated torque
B. rated torque
C. less than the rated torque
D. zero - Torque developed by a single phase induction motor at starting is_____________?
A. pulsating
B. uniform
C. none of the above
D. nil - A centrifugal switch is used to dis- connect ‘starting winding when motor has___________?
A. run for about 1 minute
B. run for about 5 minutes
C. picked up about 50 to 70 per cent of rated speed
D. picked up about 10 to 25 per cent of rated speed - In split phase motor main winding is of _____________?
A. thin wire placed at the top of the slots
B. thin wire placed at the bottom of the slots
C. thick wire placed at the bottom of the slots
D. thick wire placed at the top of the” slots
