The mathematical expression for the instantaneous value of an alternating current isi = 7.071 sin (157.08 t −(π/4))A. Find its effective value, periodic time and the instant atwhich it reaches its positive maximum value. Sketch the wave – form from t = 0 over one complete cycle. 4. The mathematical expression for the instantaneous value of an alternating current isi = 7.071 sin (157.08 t -) A. Find its effective value, periodic time and the instant at= 0 overwhich it reaches its positive maximum value. Sketch the wave - form from tone complete cycle.

I=7.071sin(157.08t-π4) comparing it with I=I0sin(ωt+ϕ)-----------eqn(1) I0=7.071ω=157.08ϕ=π4 we know…

The mathematical expression for the instantaneous value of an alternating current is i = 7.071 sin (157.08 t −(π/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 −(π/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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Question

The mathematical expression for the instantaneous value of an alternating current is
i = 7.071 sin (157.08 t −(π/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.