The arm of an a.c. Maxwell inductive bridge arranged as follow,AB is a non inductive resistance of 1000Ω in parallel with a capacitor of capacitance 0.5µF, BC is a non inductive resistance of 1000Ω, CD is an inductive impedance (unknown) and DA is a non inductive resistance of 1000 Ω. If balance is obtain under this condition, determine the inductance and resistance of an arm CD.

a: R_x = 100Ω , L_x =0.10H Explanation

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b: R_x = 10Ω , L_x =0.15H Explanation

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c: R_x = 1000Ω , L_x =0.5H Explanation

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d: R_x = 10000Ω , L_x =0.25H Explanation

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The Maxwell’s Inductance-Capacitance bridge is not suitable for the measurement inductance of coil if the Q factor is

a: Less than 1 Explanation

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b: Between 1 to 10 Explanation

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c: More than 10 Explanation

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d: Both (a) and (c) Explanation

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A Maxwell’s capacitance bridge shown in figure below is used to measure an unknown inductance in comparison with capacitance .The values at balance R₂= 500Ω, R₄=600Ω, R₁= 1000Ω, C₁= 0.7µF; Calculate the values of R₁ and L₁ . Calculate also the Q-factor of the coil if frequency is 1000Hz.

a: R_x = 300Ω , L_x =0.21H , Q=4.396 Explanation

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b: R_x = 500Ω , L_x =0.31H , Q=7.396 Explanation

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c: R_x = 300Ω , L_x =0.41H , Q=9.396 Explanation

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d: R_x = 700Ω , L_x =0.11H , Q=5.396 Explanation

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Which of the following essential features is possessed by an indicating instrument?

a: Controlling device Explanation

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b: Deflecting device Explanation

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c: Damping device Explanation

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d: All of the above Explanation

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