A 220 V dc machine supplies 20 A at 200 V as ___

A 220 V dc machine supplies 20 A at 200 V as generator.

The armature resistance is 0.2Ω.

If the machine is now operated as a motor at the same terminal voltage and current but with the flux increased by 10% the ratio of motor speed to generator speed is

A. 0.87.
B. 0.95.
C. 0.96.
D. 1.06.

Show Answer

Answer: A

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