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PMDC gives better speed regulation than DC shunt motor.

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in DC Machines by (506k points)
PMDC gives better speed regulation than DC shunt motor.

(a) True

(b) False

I got this question during an interview.

This interesting question is from PMDC Motors in section DC Machines of DC Machines

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Correct choice is (a) True

For explanation I would say: PMDC motor exhibits better speed regulation and efficiency than dc shunt motor. The main problem of dc shunt motor is going to run-away when the field terminals are opened. But in PMDC there is no run-away problem, so it gives practical benefit to the industry applications.

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