A dc series motor should not be started on no load because it would___________?

Related Mcqs:

1. The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is______________?

   A. 2.36% B. 4.76% C. 6.77% D. 8.84%...

2. Which motor should not be started on no-load ?

   A. Series motor B. Shunt motor C. Cumulatively compounded motor D. Differentially compounded motor...

3. In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to

   A. 100% of the previous value B. 50% of the previous value C. 25% of the previous value D. 10% of the previous value E. none of the above...

4. D.C. motor is to a drive a load which is almost nil for certain part of the load cycle and peak value for short duration. We will select this______________?

   A. series motor B. shunt motor C. compound motor D. any of the above...

5. By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor?

   A. Frame B. Shaft C. Commutator D. Stator...

6. Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be_____________?

   A. level compounded B. under compounded C. cumulatively compounded D. differentially compounded...

7. One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven_______________?

   A. runs as a generator B. does not run as a generator C. also runs as a motor comes to stop after sometime...

8. A D.C. series motor is that which______________?

   A. has its field winding consisting of thick wire and less turns B. has a poor torque C. can be started easily without load D. has almost constant speed...

9. The speed of a D.C. series motor is_____________?

   A. proportional to the armature current B. proportional to the square of the armature current C. proportional to field current D. inversely proportional to the armature current...

10. Which of the following test can be performed on DC series motor?

    A. Swinburne test B. Hopkinson test C. Brake test D. Field test...