SSC JE Electrical Engineering 22 Jan 2018 Morning Paper

Question : 147 of 200

Marks: +1, -0

Determine the value of unknown inductance

L_X

(in mH) and the effective resistance

R_X

(in Ω) of inductor respectively for the circuit given below, if no current flows through the galvanometer (G).

Solution:

Given data

R_2 = 40Ω

R_3 = 60Ω

R_4 = 60Ω

C_4 = 40µf

Now for Maxwell L-C Bridge circuit

R_X={R_2R_4}/R_3

Now,

R_X={40×60}/60

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