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Q. |
For a dc machine, its commutator has a diameter of 50 c rotating at 1000 rpm. For a brush width of 1 cm, the time commutation taken by the machine will be |
A. | 0.382 ms |
B. | 0.456 ms |
C. | 0.573 ms |
D. | 0.312 ms |
Answer» A. 0.382 ms | |
Explanation: time of commutation = brush width/peripheral velocity |
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