Question

Time taken by AC to reach half of maximum value is........ While initial phase of A. C is 90degrees

Answer 1

60 cycles in an AC sine wave, means that the system is operating with a supply that has a frequency of 60hz = 60 cycles per second. Therefore, the cycle time for such a system is 1/60 seconds (16.67 ms). Each cycle comprises, one positive going voltage duration and one negative going voltage duration.

Answer 2

The time taken by the alternating current to reach half of the maximum velocity is dependent on  the frequency of the alternating current

Explanation:

• The frequency is the reciprocation of the the time period of the oscillation. As a result of this the alternating current takes half of its cycle to complete the highest velocity and the second half of the cycle to decrease the velocity 20.
• Hence if you know the frequency of the  alternating current then we can find out the the time taken to reach half of the maximum velocity

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