Which of the following statements regarding single-phase induction motors correct?

Related Mcqs:

1. 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...

2. Which of the following single-phase motors is suitable for timing and control purposes ?

   A. Reluctance motor B. Series motor C. Repulsion motor D. Universal motor...

3. Which of the following single-phase motors has relatively poor starting torque ?

   A. Universal motor B. Repulsion motor C. Capacitor motor D. All single phase motors have zero starting torque...

4. Which of the following statements regarding repulsion-start induction motor is incorrect ?

   A. It requires more maintenance of commutator and other mechanical devices B. It makes quite a bit of noise on starting C. In fractional horse power motors, it has replaced the capacitor motors D. It is not easily reversed...

5. The capacitors used in single-phase capacitor motors have no__________?

   A. voltage rating B. dielectric medium C. polarity marking D. definite value...

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

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

7. 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...

8. 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...

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

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

10. 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...