A high voltage Schering-bridge has the following arms a) Standard capacitors: 500 pF and 100 pF b) Variable resistance R4: 1 ohm to 1k-ohm c) C3 = 1nF to 2 uF, R3 = 100 to 1000 ohms: Determine: 2.2.1 The maximum and minimum values of Cx, unknown capacitance that can be measured. 2.2.2 The maximum and minimum loss angle that can be measured at 50 Hz. 2.2.3 The loss angle of the specimen if balance is obtained at 50 Hz with Cx = 200 pF, C3= 10 nF and R4 = 1 k-ohm with a standard capacitor having a capacitance of 500 pF. 2.2.4 The value of the shunt to used with R4 to measure 10 uF.

A high voltage Schering-bridge has the following arms a) Standard capacitors: 500 pF and 100 pF b) Variable resistance R4: 1 ohm to 1k-ohm c) C3 = 1nF to 2 uF, R3 = 100 to 1000 ohms: Determine: 2.2.1 The maximum and minimum values of Cx, unknown capacitance that can be measured. 2.2.2 The maximum and minimum loss angle that can be measured at 50 Hz. 2.2.3 The loss angle of the specimen if balance is obtained at 50 Hz with Cx = 200 pF, C3= 10 nF and R4 = 1 k-ohm with a standard capacitor having a capacitance of 500 pF. 2.2.4 The value of the shunt to used with R4 to measure 10 uF.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter19: Capacitors

Section: Chapter Questions

Problem 2PA: You are an electrician working in an industrial plant. You discover that the problem with a certain...

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