The motor used on small lathes is usually_________?

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. 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

3. 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

4. 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

5. 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

6. Direction of rotation of a split phase motor can be reversed by reversing the connection of__________?

   A. running winding only
   B. starting winding only
   C. either A. or (b)
   D. both A. and (b)

7. A universal motor can run on___________?

   A. A.C. only
   B. D.C. only
   C. either A.C. or D.C.
   D. none of the above

8. In case of high speed universal motor which of the following needs more attention?

   A. End play
   B. Air gap
   C. Insulation in rotor
   D. Balancing of rotor

9. The speed of a universal motor is generally reduced by using_________?

   A. gear trains
   B. V-belts
   C. brakes
   D. chains

10. In a universal motor, the most common cause of brush sparking is___________?

    A. open armature winding
    B. shorted armature winding
    C. shorted field winding”
    D. high commutator mica
    E. all of the above