A shaded pole motor does not possess___________?

Related Mcqs:

1. In case of a shaded pole motor the direction of rotation of the motor is__________?

   A. from main pole to shaded pole
   B. from shaded pole to main pole
   C. either of the above depending on voltage
   D. either of the above depending on power factor

2. In a shaded pole motor, the shading coil usually consist of___________?

   A. a single turn of heavy wire which is in parallel with running winding
   B. a single turn of heavy copper wire which is short-circuited and carries only induced current
   C. a multilayer fine gauge copper wire in parallel with running winding
   D. none of the above

3. In a shaded pole single-phase motor, the revolving field is produced by the use of_________?

   A. inductor
   B. capacitor
   C. resistor
   D. shading coils

4. A shaded pole motor can be used for_____________?

   A. toys
   B. hair dryers
   C. circulators
   D. any of the above

5. Locked rotor current of a shaded pole motor is____________?

   A. equal to full load current
   B. less than full load current
   C. slightly more than full load current
   D. several times the full load current

6. The shaded pole motor is used for__________?

   A. high starting torque
   B. low starting torque
   C. medium starting torque
   D. very high starting torque

7. The range of efficiency for shaded pole motors is______________?

   A. 95% to 99%
   B. 80% to 90%
   C. 50% to 75%
   D. 5% to 35%

8. A.C. series motor as compared to D.C. series motor has__________?

   A. smaller brush width
   B. less number of field turns
   C. more number of armature turns
   D. less air gap
   E. all of the above

9. Two-value capacitor motor finds increased application as compressor motor in small home air-conditioners because_____________?

   A. it is comparatively cheaper
   B. it has almost non-destructible capacitor
   C. it has low starting as well as running currents at relatively high power factor
   D. it is quiet in operation

10. In case of a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will_____________?

    A. become unstable
    B. draw excessive armature current and may burn out
    C. fall out of synchronism and come to stand still
    D. run as induction motor