Capacitance Comparison Bridge

Electrical Measurements

This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Capacitance Comparison Bridge”.

1. In a capacitance bridge, the arms are _________
a) resistive
b) capacitive
c) inductive
d) mixture of resistance, capacitance and inductance

2. How is the bridge balanced?
a) using resistance R1
b) using resistance R3
c) through capacitance C3
d) through capacitance Cx

3. Impedance Z4 consists of _________
a) resistance Rx
b) capacitance Cx
c) combination of capacitance Cx and resistance Rx
d) consists of a detector

4. Impedance Z3 consists of_________
a) resistance R3
b) capacitance C3
c) vibration galvanometer
d) capacitance C3 in series with resistance R3

5. Unknown capacitance value is obtained by _________
a) comparison with standard
b) using a tuned detector
c) using capacitance of other ratio arms
d) using a vibration galvanometer

6. Unknown resistance is obtained by using which of the following relation?
a) Rx = R1R3R2
b) Rx = R2R3R1
c) Rx = R2R1R3
d) Rx = R2R1

7. Unknown capacitance is found by using which of the following relation?
a) Cx = C3R2R1
b) Cx = C3R2
c) Cx = C3R1R2
d) Cx = R1R2

8. Actual balance condition can be obtained by _________
a) varying R1
b) varying R3
c) varying R2
d) varying R1 and R3

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