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

Related Mcqs:

What will happen if the back e.m.f. of a D.C. motor vanishes suddenly?

A. The motor will stop B. The motor will continue to run C. The armature may burn D. The motor will run noisy...

These days D.C. motors are widely used in____________?

A. pumping sets B. air compressors C. electric traction D. machine shops...

Sparking at the commutator of a D.C. motor may result in____________?

A. damage to commutator segments B. damage to commutator insulation C. increased power consumption D. all of the above...

If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking?

A. regenerative B. plugging C. dynamic braking D. none of the above E. any of the above...

Which method of braking is generally used in elevators ?

A. Plugging B. Regenerative braking C. Rheostatic braking D. None of the above...