Physics-
General
Easy
Question
A six pole generator with fixed field excitation developes an emf of 100 V, when operating at 1500 rpm. At what speed must it rotate to develop 120 V?
- 1200 rpm
- 1800 rpm
- 1500 rpm
- 400 rpm
The correct answer is: 1800 rpm
The emf induced is directly proportional to rate at which flux is intercepted which varies directly as the speed of rotation of the generator.
New, speed=
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