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Ronan Asked :

25-09-2021 Electrical Machines

Q. Small DC motors have best speed control by _________

A. armature voltage control
B. field resistance control
C. any of the methods
D. None of the above


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Dapzoi Verified
Commented on 2021-09-25 12:11:37 (IST)
Answer: A

Explanation: For the small dc motors it is difficult to vary the speed using their field control.