If a single phase induction motor runs slower than normal, the most likely defect is_____________?

Related Mcqs:

1. Torque developed by a single phase induction motor at starting is_____________?

   A. pulsating B. uniform C. none of the above D. nil...

2. 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...

3. The power factor of a single-phase induction motor is usually?

   A. lagging B. always leading C. unity D. unity to 0.8 leading...

4. 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...

5. Single phase induction motor usually operates on__________?

   A. 0.6 power factor lagging B. 0.8 power factor lagging C. 0.8 power factor leading D. unity power factor...

6. 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...

7. 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...

8. 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...

9. 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...

10. 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...