Question: An induction motor is rotating at a speed of 1470 rpm. A disc marked with one star is attached to it. A stroboscope flashes light on it at a frequency of 12.5 flashes per second:
Answer:
MCQ: An induction motor is rotating at a speed of 1470 rpm. A disc marked with one star is attached to it. A stroboscope flashes light on it at a frequency of 12.5 flashes per second:
Correct Answer:
A. It is observed that the star mark moves at a speed of 30 rpm in the direction of rotation
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