In D.C. motor which of the following can sustain the maximum temperature rise?

Related Mcqs:

When two D.C. series motors are connected in parallel, the resultant speed is____________?

A. more than the normal speed B. loss than the normal speed C. normal speed D. zero...

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...

The armature voltage control of D.C. motor provides____________?

A. constant torque drive B. constant voltage drive C. constant current drive D. none of the above...

Ward-Leonard control is basically a____________?

A. voltage control method B. field divertor method C. field control method D. armature resistance control method...

The speed of a D.C. shunt motor is required to be more than full load speed. This is possible by______________?

A. reducing the field current B. decreasing the armature current C. increasing the armature current D. increasing the excitation current E. none of the above methods...