GATE EE 2014 Set 3 — Question 58
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Electrical & Electronic Measurements → Bridges & Potentiometers → AC Bridges (Maxwell, Hay, Schering)
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Question
In the bridge circuit shown, the capacitors are loss free. At balance, the value of capacitance in microfarad is _________.
Correct answer
0.3 to 0.3
Solution
For a balanced bridge, the product of impedances of opposite arms must be equal: .
From the circuit diagram:
.
From the circuit diagram:
- Arm 1 (top-left):
- Arm 2 (top-right):
- Arm 3 (bottom-left):
- Arm 4 (bottom-right):
.
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