Which of the following motor will have relatively higher power factor ?
Which of the following motor will have relatively higher power factor ? A. Capacitor run motor B. Shaded pole motor C. Capacitor start motor D. Split phase motor
Single Phase Induction Motors
In a shaded pole motor, the shading coil usually consist of___________?
In a shaded pole motor, the shading coil usually consist of___________? A. a single turn of heavy wire which is in parallel with running windingB. a single turn of heavy copper wire which is short-circuited and carries only induced current…
The rotor developed by a single-phase motor at starting is___________?
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 torqueD. zero
In a split phase motor____________?
In a split phase motor____________? A. the starting winding is connected through a centrifugal switch B. the running winding is connected through a centrifugal switch C. both starting and running windings are connected through a centrifugal switch D. centrifugal switch…
If the capacitor of a single-phase motor is short-circuited_________?
If the capacitor of a single-phase motor is short-circuited_________? A. the motor will not start B. the motor will run C. the motor will run in reverse direction D. the motor will run in the same direction at reduced r.p.m
In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to_______________?
In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to_______________? A. improve power factor B. increase overload capacity C. reduce fluctuations in torque D. to improve torque
In a split phase motor, the running winding should have?
In a split phase motor, the running winding should have? A. high resistance and low inductanceB. low resistance and high inductance C. high resistance as well as high inductance D. low resistance as well as low inductiance
In capacitor start single-phase motors____________?
In capacitor start single-phase motors____________? A. current in the starting winding leads the voltage B. current in the starting winding lags the voltage C. current in the starting winding is in phase with voltage in running winding D. none of…
In a capacitor start motor, the phase displacement between starting and running winding can be nearly__________?
In a capacitor start motor, the phase displacement between starting and running winding can be nearly__________? A. 10° B. 30° C. 60°D. 90°
Which of the following motor will give relatively high starting torque ___________?
Which of the following motor will give relatively high starting torque ___________? A. Capacitor start motor B. Capacitor run motor C. Split phase motor D. Shaded pole motor