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GATE 2020 || Measurements || Quiz 4
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Question 1
In a test on a Bakelite sample at 20 kV, 50 Hz by a Schering bridge having a standard capacitor of 106 μF, balance was obtained with a capacitance of 0.35 μF in parallel with a noninductive resistance of 318 Ω, the noninductive resistance in remaining arm of the bridge being 130 Ω.
Determine the value of capacitance of the specimen.
Determine the value of capacitance of the specimen.
Question 2
A dc potentiometer is designed to measure up to about 2V with a slide wire of 300 mm. A standard cell of emf 1.18 V obtains balance at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of the test cell is
Question 3
In a Maxwell bridge, the fixed-value bridge components have the following values; If and at balance. ____ is the Q factor for the unknown impedance at a supply frequency of 50Hz.
Question 4
The arms of an ac bridge shown in figure below are arranged, for balance as follows: and
The supply frequency is 450 Hz. Determine the loss angle of condenser.
The supply frequency is 450 Hz. Determine the loss angle of condenser.
Question 5
The ac bridge shown in the figure is used to measure the impedance Z.
If the bridge is balanced for oscillator frequency f = 2 kHz, then the impedance Z will be
If the bridge is balanced for oscillator frequency f = 2 kHz, then the impedance Z will be
Question 6
In the circuit shown above when if then the value of is ____.
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Sep 23ESE & GATE EE