GATE EE 2015 Set 1 — Question 15

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MCQ+1 / -0.33EasyError AnalysisMeasurement PrinciplesElectrical & Electronic MeasurementsWheatstone & Kelvin BridgeBridges & Potentiometers

Electrical & Electronic Measurements → Bridges & Potentiometers → Error Analysis

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Question

When the Wheatstone bridge shown in the figure is used to find the value of resistor RxR_x, the galvanometer GG indicates zero current when R1=50 ΩR_1 = 50\ \Omega, R2=65 ΩR_2 = 65\ \Omega and R3=100 ΩR_3 = 100\ \Omega. If R3R_3 is known with ±5%\pm 5\% tolerance on its nominal value of 100 Ω100\ \Omega, what is the range of RxR_x in Ohms?

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