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1. |
In connection with the extinction in circuit breaker, resistance switching is employed where in a resistance is placed in parallel with the poles of the circuit breaker as shown in the figure. This process introduces damping in the LC circuit. For critical damping the value of ‘r’ should be equal to |
A. | \(\sqrt {\frac{C}{L}} \) |
B. | \(0.5\sqrt {\frac{C}{L}} \) |
C. | \(0.5\sqrt {\frac{L}{C}} \) |
D. | \(\frac{1}{{2\pi }}\sqrt {\frac{L}{C}} \) |
Answer» D. \(\frac{1}{{2\pi }}\sqrt {\frac{L}{C}} \) | |