When the armature of a D.C. motor rotates, e.m.f. induced is___________?

Related Mcqs:

A direct on line starter is used: for starting motors___________?

A. up to 5 H.P B. up to 10 H.P C. up to 15 H.P D. up to 20 H.P...

For the same H.P. rating and full load speed, following motor has poor starting torque_____________?

A. shunt B. series C. differentially compounded D. cumulativelyc’ompounded...

As -the load is increased the speed of D.C. shunt motor will____________?

A. reduce slightly B. increase slightly C. increase proportionately D. remains unchanged...

The losses occurring in a D.C. generator are given below. Which loss is likely to have highest proportion at rated load of the generator ?

A. hysteresis loss B. field copper loss C. armature copper loss D. eddy current loss...

In variable speed motor___________?

A. a stronger commutating field is needed at low speed than at high speed B. a weaker commutating field is needed at low speed than at high speed C. same commutating field is needed at low speed than at high speed D. none of the above is correct...