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An alternating voltage is given by: `e = e_(1) sin omega t + e_(2) cos omega t`. Then the root mean square value of voltage is given by:A. `sqrt(e_(1)^(2)+e_(2)^(2))`B. `sqrt(e_(2)e_(2))`C. `sqrt(e_(1)e_(2))/(2)`D. `sqrt(e_(1)^(2)+e_(2)^(2))/(2)` |
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Answer» Correct Answer - D d) `e=sqrt(e_(1)^(2)+e_(2)^(2))sin(omegat+phi)` Where, `cosphi = (e_(1))/(sqrt(e_(1)^(2)+e_(2)^(2)))` and `sinphi = (e_(2))/(sqrt(e_(1)^(2)+e_(2)^(2)))` i.e., `e_(0) = sqrt(e_(1)^(2)+e_(2)^(2))` or `e_(rms) = sqrt(e_(1)^(2)+e_(2)^(2))/(sqrt(2))` |
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