A Maxwell bridge, designed to measure the unknown impedance ðRu; LuÞ of a coil, is shown in Fig. 6.8. (a) Derive an expression for Ru and Lu under balance conditions. (b) If the fixed bridge component...

A Maxwell bridge, designed to measure the unknown impedance ðRu; LuÞ of a coil, is

shown in Fig. 6.8.

(a) Derive an expression for Ru and Lu under balance conditions.

(b) If the fixed bridge component values are R3 ¼ 100 U and C ¼ 20 mF, calculate

the value of the unknown impedance if R1 ¼ 3183 U and R2 ¼ 50 U at balance.

(c) Calculate the Q factor for the coil if the supply frequency is 50 Hz.