DHA) A capacitor bushing forms

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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DHA) A capacitor bushing forms
arm ab of a Schering bridge and
a standard capacitor of 500 pF
capacitance and negligible loss,
forms arm ad. Arm bc consists of
a non-inductive resistance of 300
Q. When the bridge is balanced
arm cd has a resistance of 72.6
Q in parallel with a capacitance
0.148 micro Farad. The supply
frequency is 5O Hz. Calculate the
capacitance and dielectric loss
angle of capacitor.
Derive the equations for balance
and draw the phasor diagram
under conditions of balance.
Transcribed Image Text:DHA) A capacitor bushing forms arm ab of a Schering bridge and a standard capacitor of 500 pF capacitance and negligible loss, forms arm ad. Arm bc consists of a non-inductive resistance of 300 Q. When the bridge is balanced arm cd has a resistance of 72.6 Q in parallel with a capacitance 0.148 micro Farad. The supply frequency is 5O Hz. Calculate the capacitance and dielectric loss angle of capacitor. Derive the equations for balance and draw the phasor diagram under conditions of balance.
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