In repulsion motor, maximum torque is developed when____________?

Related Mcqs:

1. 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)...

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

   A. shunt motor B. series motor C. compound motor D. separately excited motor...

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

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

4. 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...

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

   A. good power factor B. high efficiency C. minimum cost D. high starting torque...

6. 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...

7. 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...

8. A repulsion motor is equipped with__________?

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

9. Which of the following motor will give relatively high starting torque ___________?

   A. Capacitor start motor B. Capacitor run motor C. Split phase motor D. Shaded pole motor...

10. Which of the following motor will give the highest starting torque ?

    A. D.C. shunt motor B. Schrage motor C. Repulsion start and induction run motor D. Universal motor...