Which of the following method is used for the speed control of DC shunt motor?

Related Mcqs:

If the field of a D.C. shunt motor gets opened while motor is running______________?

A. the speed of motor will be reduced % B. the armature current will reduce C. the motor will attain dangerously high speed 1 D. the motor will continue to nuvat constant speed...

The type of D.C. motor used for shears and punches is_____________?

A. shunt motor B. series motor C. differential compoutid D.C. motor D. cumulative compound D.C. motor...

D.C. series motors are used______________?

A. where load is constant B. where load changes frequently C. where constant operating speed is needed D. in none of the above situations...

Which of the following motors is usually used in house-hold refrigerators ?

A. D.C. shunt motor B. D.C. series motor C. Single phase induction motor (split phase start or induction run motor) D. Reluctance motor E. Synchronous motor...

In the D.C. motor the iron losses occur in____________?

A. the field B. the armature C. the brushes D. the commutator...