Q
In D.C. machines, ir order to prevent excessive distortion of field form by the armature reaction, the field mmf must be made____________?
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A
A. Equal to that of armature mmf
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B
B. Less in comparison with the armature mmf
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C
C. Large in comparison with the armature mmf
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D
D. None of the above
Correct Answer:
C. C. Large in comparison with the armature mmf