In case of D.C. shunt motors the speed is dependent on back e.m.f. only because____________?

Related Mcqs:

In a D.C. shunt motor, speed is______________?

A. independent of armature current B. directly proportional to the armature current C. proportional to the square of the current D. inversely proportional to the armature current...

A three point starter is considered suitable for______________?

A. shunt motors B. shunt as well as compound motors C. shunt, compound and series motors D. all D.C. motors...

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...

For a D.C. shunt motor if the excitation is changed_______________?

A. torque will remain constant B. torque will change but power will remain constant C. torque and power both will change D. torque, power and speed, all will change...

In a D.C. generator, the iron losses mainly take place in___________/

A. yoke B. commutator C. armature conductors D. armature rotor...