engineering recuitment NHPC JE & THDC JE 2023 Mock Test Electrical and Electronics Measurements Measurement of R/L/C Using Bridge Circuits Measurement of Capacitance
The bridge circuit shown can be used to measure unknown lossy capacitor Cx with resistance Rx. At balance:
1
\({R_X} = \frac{{{C_1}}}{{{C_3}}}{R_2}\;\;and\;\;{C_X} = \frac{{{R_1}}}{{{R_2}}}{C_3}\)
2
\({R_X} = \frac{{{C_3}}}{{{C_1}}}{R_1}\;\;and\;\;{C_X} = \frac{{{R_2}}}{{{R_1}}}{C_3}\)
3
\({R_X} = \frac{{{R_1}}}{{{C_2}}}{R_2}\;and\;\;{C_X} = \frac{{{C_1}}}{{{R_1}}}{R_2}\)
4
RX = R2 and CX = C3