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Ronan Asked :

25-09-2021 Electrical Machines

Q. Armature voltage control works for speeds _____ base speed and field resistance control works well for speed _____ base speed.

A. below, above
B. above, below
C. above, above
D. below, below

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Dapzoi Verified
Commented on 2021-09-25 12:12:17 (IST)
Answer: A

Explanation: For armature voltage control, armature current is increased so as to reduce speed below base speed. In field control flux is reduced so the speed would be above base speed.