InterviewSolution
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InterviewSolution
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For a series `RLC` circuit `R=X_(L)=2X_(C)`. The impedence of the current and phase different (between) `V` and `i` will beA. `(sqrt(5)R)/2, tan^(-1)(2)`B. `(sqrt(5)R)/2, tan^(-1)(1/2)`C. `sqrt(5) X_(C), tan^(-1)(2)`D. `sqrt(5) R, tan^(-1)(1/2)` |
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Answer» Correct Answer - B `X_(L)=R, X_(C)=R//2` `:. tan varphi=(X_(L)-X_(C))/R=(R-R/2)/R=1/2` `implies varphi=tan^(-1)(1//2)` Also `Z=sqrt(R^(2)+(X_(L)-X_(C))^(2))=sqrt(R^(2)+(R^(2))/4)=(sqrt(5))/2 R` |
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