A. 0.6 power factor lagging
B. 0.8 power factor lagging
C. 0.8 power factor leading
D. unity power factor
Related Mcqs:
- The power factor of a single-phase induction motor is usually?
A. lagging
B. always leading
C. unity
D. unity to 0.8 leading - 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 - A single-phase induction motor is__________?
A. inherently self-starting with high torque
B. inherently self-starting with low torque
C. inherently non-self-starting with low torque
D. inherently non-self-starting with high torque - 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 - Torque developed by a single phase induction motor at starting is_____________?
A. pulsating
B. uniform
C. none of the above
D. nil - If a single phase induction motor runs slower than normal, the most likely defect is_____________?
A. worn bearings
B. short-circuit in the winding
C. open-circuit in the winding
D. none of the above - 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 - Which of the following single-phase induction motors is generally used in time phonographs ?
A. Resistance start
B. Capacitor start capacitor run
C. Shaded pole
D. Universal - Which of the following statements regarding single-phase induction motors correct?
A. It requires only one winding
B. It can rotate in one direction only
C. It is self-starting
D. It is not self-starting - The rotor slots, in an induction motor, are usually not quite parallel to the shaft because it_____________?
A. improves the efficiency
B. helps the rotor teeth to remain under the stator teeth
C. helps in reducing the tendency of the rotor teeth to remain under the stator teeth
D. improves the power factor
