Q1:A high voltage Schering Bridge has the following arms with their component ranges: AB: capacitor=100 pF...

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Electrical Engineering


Q1:A high voltage Schering Bridge has the following arms with theircomponent ranges: AB: capacitor=100 pF to 500 pF, BC: variablecapacitance (1 nF to 2 µF) in parallel with variable resistancefrom (100 Ω to 1000 Ω), CD: variable resistance from (1 Ω to 1000Ω), DA: test object. Determine:
(a) the maximum value of the capacitance of the bushing,

(b) the minimum value of the capacitance of the bushing

(c) the loss angle of the bushing if balance is obtained withcapacitance of the bushing is 200pF, R4=1000Ω, C4=10nF with a highvoltage capacitor having maximum value

(d) in this question, what is the difference betweenthe bushing and the test object

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