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GATE EE 2021: Measurement Quiz 5 (App update required to attempt this test)
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Question 1
Kelvin double bridge is best suited for the measurement of
Question 2
The sensitivity of a Wheatstone bridge depends upon
Question 3
Using the wheat stone bridge method the unknown resistance is found by the relation
Where R1 = 80 ± 0.8% Ω
R2 = 1200 ± 0.5% Ω
R3 = 760 ± 0.6% Ω
the limiting error in ohm will be
Question 4
The various resistance of a wheat stone bridge are shown in figure. The battery has an internal emf of 8 V with negligible internal resistance. If the sensitivity of galvanometer is 12 mm/µA with an internal resistance of 150 Ω.
What will be the sensitivity of the bridge in term of deflection per unit change in resistance.
Question 5
A resistance of 90 Ω is measured by voltmeter-ammeter method with a 1a ammeter having a resistance of 3.2 Ω & 65 V voltmeter having a resistance of 4500 Ω. Suppose that the voltmeter method is preferred to measure the accurate value of resistance with I = 0.46 A and V = 45 volt. What will be the error in measurement in Ω if the accuracy of the instrument is ± 0.6% at full scale.
Question 6
Find the series equivalent inductance of the network that causes an opposite angle (Hays bridge) to null with the following bridge arms.
ω = 3000 rad/sec, R2 = 10 kΩ
R1= 2 kΩ, C1 = 1 μF, R3 = 1 kΩ
The value of Lx in Henry will be
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Apr 20ESE & GATE EE