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The purpose of using oil in transformers is due to:

The purpose of using oil in transformers is due to:

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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7. The purpose of using oil in transformers is due to: a) Insulating properties. b) Cooling properties. c) Both a and b d) Neither a nor b 8. Liquids with solid impurities a) Have higher dielectric strength b) Of large size have higher dielectric strength c) Have lower dielectric strength as compared to pure liquids d) None of the above 9. Peak to peak ripple is defined as a) the difference between average dc voltage and peak value b) the difference between maximum and minimum dc voltage c) the difference between maximum ac and average dc voltages d) the difference between ac (rms) and average dc voltages 10. In a Cockroft-Walton circuit, input voltage 100 kV load current 25 mA, supply frequency 100 Hz, each capacitor 10 nF. The optimum no. of stages for maximum output voltage is а) 1 b) 2 c) 10 d) 35
Transcribed Image Text:7. The purpose of using oil in transformers is due to: a) Insulating properties. b) Cooling properties. c) Both a and b d) Neither a nor b 8. Liquids with solid impurities a) Have higher dielectric strength b) Of large size have higher dielectric strength c) Have lower dielectric strength as compared to pure liquids d) None of the above 9. Peak to peak ripple is defined as a) the difference between average dc voltage and peak value b) the difference between maximum and minimum dc voltage c) the difference between maximum ac and average dc voltages d) the difference between ac (rms) and average dc voltages 10. In a Cockroft-Walton circuit, input voltage 100 kV load current 25 mA, supply frequency 100 Hz, each capacitor 10 nF. The optimum no. of stages for maximum output voltage is а) 1 b) 2 c) 10 d) 35
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