The main disadvantage of the Ward-Leonard control method is______________?

Related Mcqs:

When two D.C. series motors are connected in parallel, the resultant speed is____________?

A. more than the normal speed B. loss than the normal speed C. normal speed D. zero...

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...

For which of the following applications a D.C. motor is preferred over an A.C. motor ?

A. Low speed operation B. High speed operation C. Variable speed operation D. Fixed speed operation...

The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is______________?

A. 2.36% B. 4.76% C. 6.77% D. 8.84%...

Torque developed by a D.C. motor depends upon_____________?

A. magnetic field B. active length of the conductor C. current flow through the conductors D. number of conductors E. radius of armature F. all above factors...