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A six pole generotar with fixed field ex...

A six pole generotar with fixed field excitation developes an e.m.f. of `100 V` when operating at `1500` r.p.m. At what speed must it rotate to develop `120 V`?

A

1200 r.p.m

B

1800 r.p.m

C

1500 r.p.m

D

400 r.p.m

Text Solution

Verified by Experts

The correct Answer is:
B
The e.m.f. induced is directly proportional to rate at which flux is intercepted which in turn varies directly as the speed of rolation of the generator.
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