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two 60 cycle current i1=2cos(wt-15) amp and i2=-3sin(wt-75) amp flow into a common wire. determine the phase angle between the two current. which wave leads?

Sagot :

Answer:

Previously we saw that a Sinusoidal Waveform is an alternating quantity that can be presented graphically in the time domain along an horizontal zero axis. We also saw that as an alternating quantity, sine waves have a positive maximum value at time π/2, a negative maximum value at time 3π/2, with zero values occurring along the baseline at 0, π and 2π.