Speed torque characteristic of a repulsion induction motor is similar to that of a D.C____________?

Related Mcqs:

1. In repulsion motor, maximum torque is developed when____________?

   A. brush axis is at 45° electrical to the field axis B. brush axis coincides with the field axis C. brush axis is at 90° electrical to the field axis D. none of the above...

2. In repulsion motor, zero torque is developed when___________?

   A. brush axis is 45° electrical to field axis B. brush axis coincides with the field axis C. brush axis is 90° electrical to field axis D. both B. and (c)...

3. The repulsion-start induction-run motor is used because of___________?

   A. good power factor B. high efficiency C. minimum cost D. high 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. Torque developed by a single phase induction motor at starting is_____________?

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

6. If a particular application needs high speed and high starting torque, then which of the following motor will be preferred ?

   A. Universal motor B. Shaded pole type motor C. Capacitor start motor D. Capacitor start and run motor...

7. In repulsion motor direction of rotation of motor____________?

   A. is opposite to that of brush shift B. is the same as that of brush shift C. is independent of brush shift...

8. The purpose of stator winding in the compensated repulsion motor is to_____________?

   A. provide mechanical balance B. improve power factor and provide better speed regulation C. prevent hunting in the motor D. eliminate armature reaction...

9. A repulsion motor is equipped with__________?

   A. slip rings B. commutator C. both A. and (b) D. none of the above...

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...