Which D.C. motor is preferred for elevators ?

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...

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...

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...