The mathematical expression for the instantaneous value of an alternating current is i = 7.071 sin (157.08 t – 4) A. Find its effective value, periodic time and the instant at which it reaches its positive maximum value. Sketch the wave – form from t = 0 over one complete cycle.
The mathematical expression for the instantaneous value of an alternating current is i = 7.071 sin (157.08 t – 4) A. Find its effective value, periodic time and the instant at which it reaches its positive maximum value. Sketch the wave – form from t = 0 over one complete cycle.
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![The mathematical expression for the instantaneous value of an alternating current is
i = 7.071 sin (157.08 t – ) A. Find its effective value, periodic time and the instant at
which it reaches its positive maximum value. Sketch the wave - form from t = 0 over
one complete cycle.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2c989c9c-0963-4419-8eec-9a8f271adf13%2F6f92947b-dddb-44d9-9759-e19b5893a017%2F5waewj_processed.png&w=3840&q=75)
Transcribed Image Text:The mathematical expression for the instantaneous value of an alternating current is
i = 7.071 sin (157.08 t – ) A. Find its effective value, periodic time and the instant at
which it reaches its positive maximum value. Sketch the wave - form from t = 0 over
one complete cycle.
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