In which single-phase motor, the rotor has no teeth or winding ?

Related Mcqs:

1. 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 torque
   D. zero

2. The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be___________?

   A. at the end connections
   B. at the end terminals
   C. anywhere on the winding inside a slot
   D. at the slot edge where coil enters or comes out of the slot

3. The starting winding of a single-phase motor is placed in_________?

   A. armature
   B. field
   C. rotor
   D. stator

4. 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

5. Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a___________?

   A. magnetic relay
   B. thermal relay
   C. centrifugal switch
   D. none of the above

6. 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

7. In a capacitor start motor, the phase displacement between starting and running winding can be nearly__________?

   A. 10°
   B. 30°
   C. 60°
   D. 90°

8. In a split phase motor, the running winding should have?

   A. high resistance and low inductance
   B. low resistance and high inductance
   C. high resistance as well as high inductance
   D. low resistance as well as low inductiance

9. In split-phase motor auxiliary winding is of___________?

   A. thick wire placed at the bottom of the slots
   B. thick wire placed at the top of the slots
   C. thin wire placed at the top of the slots
   D. thin wire placed at the bottom of the slots

10. In split phase motor main winding is of _____________?

    A. thin wire placed at the top of the slots
    B. thin wire placed at the bottom of the slots
    C. thick wire placed at the bottom of the slots
    D. thick wire placed at the top of the” slots