Q-3: Choose the correct answer: (/u1. Peak to peak ripple is defined asa) The difference between average dc voltage and peak valueb) The difference between ac (rms) and average dc voltagesc) The difference between maximum ac and average de voltagesd) The difference between maximum and minimum de voltagee) The difference between maximum and average dc voltage2. Gas insulated substation (GIS) use following gas for insulationа) СОb) Hydrogenc) Sulfur hexafluorided) Nitrogene) Helium3. The Townsends Criterion for Threshold sparking is given as:a) yead = 2b) ead = 1c) ead /yd) y(ead - 1)2 = 1e) r(ead - 1) = 14. The requirement of gases for insulation purpose isa) High thermal stability and low temperature condensation.b) High boiling pointc) High thermal stabilityd) High dielectric strength and thermal stabilitye) High dielectric strength only5. The mechanism of breakdown in vacuum is due toa) Particle exchangeb) Field emissionc) Clump formationd) None of abovee) All of the above.6. Liquids with solid impuritiesa) Have higher dielectric strengthb) Of large size have higher dielectric strengthc) Have high Dielectric strength as compared to pure liquidsd) Have lower dielectric strength as compared to pure liquidse) None of the above

The solution is given below. The answer for question 4 is option d.

1. Peak to peak ripple is defined as a) The difference between average dc voltage and peak value b) The difference between ac (rms) and average dc voltages c) The difference between maximum ac and average de voltages d) The difference between maximum and minimum dc voltage e) The difference between maximum and average dc voltage 2. Gas insulated substation (GIS) use following gas for insulation а) СО b) Hydrogen c) Sulfur hexafluoride d) Nitrogen e) Helium 3. The Townsends Criterion for Threshold sparking is given as: a) yead = 2 b) ead = 1 c) ead /y = d) y(ead - 1)2 = 1 e) y(ead – 1) = 1 %3D -iner

1. Peak to peak ripple is defined as a) The difference between average dc voltage and peak value b) The difference between ac (rms) and average dc voltages c) The difference between maximum ac and average de voltages d) The difference between maximum and minimum dc voltage e) The difference between maximum and average dc voltage 2. Gas insulated substation (GIS) use following gas for insulation а) СО b) Hydrogen c) Sulfur hexafluoride d) Nitrogen e) Helium 3. The Townsends Criterion for Threshold sparking is given as: a) yead = 2 b) ead = 1 c) ead /y = d) y(ead - 1)2 = 1 e) y(ead – 1) = 1 %3D -iner

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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