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

Question

Quizplus · Accepted Answer

DC motors are preferred for variable speed operation because they offer a high torque at low speeds and their speed can be easily controlled by varying the supply voltage or through field winding variations. AC motors, on the other hand, typically run at a fixed speed determined by the frequency of the supply power.

For Which of the Following Applications a D