A Maxwell’s inductive bridge shown in figure below is used to measure an unknown inductance in comparison with known inductance. The values at balance R₂= 590Ω, R₄=60Ω, R₃= 100Ω, r₂=10Ω and L₂= 2mH. Calculate the values of R₁ and L₁ . Calculate also the Q-factor of the coil if frequency is 1000Hz.

a: R₁=1000Ω,L₁=3.33mH and Q-factor=0.021 Explanation

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b: R₁=100Ω,L₁=4.33mH and Q-factor=0.011 Explanation

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c: R₁=1020Ω,L₁=5.33mH and Q-factor=0.0328 Explanation

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d: R₁=10Ω,L₁=6.33mH and Q-factor=0.0834 Explanation

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A galvanometer with a full scale current of 10 mA has a resistance of 1000Ω. The multiplying power (the ratio of measured current to galvanometer current) of 100 Ã�Â© shunt with this galvanometer is

a: 110 Explanation

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b: 100 Explanation

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c: 11 Explanation

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d: 10 Explanation

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A Maxwell’s inductive bridge shown in figure below is used to measure an unknown inductance in comparison with known inductance. The values at balance R₂= 590Ω, R₄=60Ω, R₃= 100Ω, r₂=10Ω and L₂= 6mH. Calculate the values of R₁ and L₁ . Calculate also the Q-factor of the coil if frequency is 1000Hz.

a: L₁=8mH,R₁=10000Ω and Q-factor=0.005 Explanation

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b: L₁=10mH,R₁=10Ω and Q-factor=6.2832 Explanation

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c: L₁=7mH,R₁=100Ω and Q-factor=0.4398 Explanation

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d: L₁=10mH,R₁=1000Ω and Q-factor=0.0628 Explanation

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The errors introduced by an instrument fall in which category ?

a: Gross errors Explanation

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b: Random errors Explanation

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c: Systematic errors Explanation

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d: Environmental errors Explanation

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