Determine time when current first reaches a value 30a

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Reference no: EM13278221

A 50 cycle ac has a maximum instantaneous value of 42.42A.It crosses the zero axis in a positive direction when time is zero. Determine a)time when current first reaches a value 30a

b) time when current after a ahving gone through its maximum positive values reaches a value of 36.7 amp

c)value of the current when the time is 1/20 sec

d) value when current first reaches a negative value of 21.21amp.

Reference no: EM13278221

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