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

Related Mcqs:

The speed of a D.C. shunt motor more than its full-load speed can be obtained by_____________?

A. decreasing the field current B. increasing the field current C. decreasing the armature current D. increasing the armature current...

Which of the following law/rule can he used to determine the direction of rotation of D.C. motor ?

A. Lenz’s law B. Faraday’s law C. Coloumb’s law D. Fleming’s left-hand rule...

Which of the following motor is preferred for operation in highly explosive atmosphere ?

A. Series motor B. Shunt motor C. Air motor D. Battery operated motor...

Why are the D.C. motors preferred for traction applications ?

A. Torque and speed are inversely proportional to armature current B. Torque is proportional to armature current C. Torque is proportional to square root of armature current D. The speed is inversely proportional to the torque and the torque is proportional to square of armature current...

Which of the following steps is likely to result in reduction of hysteresis loss in a D.C. generator ?

A. Providing laminations in armature core B. Providing laminations in stator C. Using non-magnetic material for frame D. Using material of low hysteresis co-efficient for armature core material...