1.

The armature voltage control of DC motor will provide ___________(a) Constant power drive(b) Constant voltage drive(c) Constant current drive(d) Constant torque driveI got this question in final exam.Enquiry is from DC Motor Basics -2 in division DC Motors of DC Machines

Answer»

Correct option is (d) CONSTANT torque drive

The explanation is: By CHANGING the armature voltage we can run motor to GIVE various speeds at constant torque. While changing the field is ALSO another idea to change speed but it’ll be variable torque constant POWER operation.



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