| Direction: Read the passage carefully and answer following question. A simple a.c. generator produces an alternating emf as shown in figure (i). |
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| If the speed of the generator is changed then the graph of the new output is shown in figure |
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A) It is halved.
B) It is doubled.
C) It is one fourth.
D) It is four times.
Correct Answer: A
Solution :
The speed of rotation affects the frequency and voltage output. When the speed of rotation is reduced by half, the frequency and the voltage output are reduced by half as well.
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