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

Related Mcqs:

The speed of a D.C. shunt motor more than its full-load speed can be obtained by_____________?

A. decreasing the field current B. increasing the field current C. decreasing the armature current D. increasing the armature current...

Which of the following motor is preferred for operation in highly explosive atmosphere ?

A. Series motor B. Shunt motor C. Air motor D. Battery operated motor...

Which of the following method of speed control of D.C. machine will offer minimum efficiency ?

A. Voltage control method B. Field control method C. Armature control method D. All above methods...

Which of the following steps is likely to result in reduction of hysteresis loss in a D.C. generator ?

A. Providing laminations in armature core B. Providing laminations in stator C. Using non-magnetic material for frame D. Using material of low hysteresis co-efficient for armature core material...

If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens____________?

A. this will make armature to take heavy current, possibly burning it B. this will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses C. nothing will happen to motor D. motor will come to stop...