C2 6. Figure shows a series resistance-capacitance bridge to R1 measure the capacitor, C3 and its leakage resistance of R3. The variable capacitor, C2 and resistor, R2 is adjusted alternately to null the bridge. The values of the resistors are RA given as R1 = 22 kN and R4 = 8 kN. The power supply frequency is 120 Hz. (i) Derive the equations for C3 and R3. (ii) Calculate the values of capacitor, C3 and resistor, R3 if the bridge is balanced when C2 = 4.7 µF and R2 = 150 2. [Module Test 2, March 2021] (ii) R3 = 54.55 , C3= 12.93 µF) R4 R,C2 (Answer: (i) R3 = R2R4 C3 = R1

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C2
6. Figure shows a series resistance-capacitance bridge to
R1
measure the capacitor, C3 and its leakage resistance of R3.
The variable capacitor, C2 and resistor, R2 is adjusted
alternately to null the bridge. The values of the resistors are
RA
given as R1 = 22 kN and R4 = 8 kN. The power supply
frequency is 120 Hz.
(i)
Derive the equations for C3 and R3.
(ii) Calculate the values of capacitor, C3 and resistor, R3
if the bridge is balanced when C2 = 4.7 µF and R2 = 150 2.
[Module Test 2, March 2021]
(ii) R3 = 54.55 , C3= 12.93 µF)
R4
(Answer: (i) R3 =
R2R4
C3 =
R,C2
R1
Transcribed Image Text:C2 6. Figure shows a series resistance-capacitance bridge to R1 measure the capacitor, C3 and its leakage resistance of R3. The variable capacitor, C2 and resistor, R2 is adjusted alternately to null the bridge. The values of the resistors are RA given as R1 = 22 kN and R4 = 8 kN. The power supply frequency is 120 Hz. (i) Derive the equations for C3 and R3. (ii) Calculate the values of capacitor, C3 and resistor, R3 if the bridge is balanced when C2 = 4.7 µF and R2 = 150 2. [Module Test 2, March 2021] (ii) R3 = 54.55 , C3= 12.93 µF) R4 (Answer: (i) R3 = R2R4 C3 = R,C2 R1
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