Which of the following motors is most suitable for signalling devices and many kinds of timers ?

Related Mcqs:

Which D.C. motor is preferred for elevators ?

A. Shunt motor B. Series motor C. Differential compound motor D. Cumulative compound motor...

The power mentioned on the name plate of an electric motor indicates____________?

A. the power drawn in kW B. the power drawn in kVA C. the gross power D. the output power available at the shaft...

Speed control by Ward Leonard method gives uniform speed variation_____________?

A. in one direction B. in both directions C. below normal speed only D. above normal speed only...

Regenerative method of braking is based on that___________?

A. back e.m.f. is less than the applied voltage B. back e.m.f. is equal to the applied voltage C. back e.m.f. of rotor is more than the applied voltage D. none 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...