Important RGPV Question

EX-702 (C) High Voltage Engineering

VII Sem, EX

Unit I Introduction

Q.1 Discuss advantages and limitations of high transmission voltage transmission. (RGPV Nov 2023)

Unit II Breakdown Phenomena

Q.1 How does a breakdown voltage discharge happen in a deep vacuum? What makes arcing inside it? (RGPV Nov 2023)

Q.2 Explain the partial discharge tests on High-Voltage Cables. How is a fault In the Insulation located in this test? (RGPV Nov 2023)

Q.3 Define Townsend’s first and second ionization coefficients. How is the condition for breakdown obtained in a Townsend discharge? (RGPV Nov 2023)

Q.4 What do you understand by “intrinsic strength” of solid dielectric? How does breakdown occur due to electrons in a solid dielectric? (RGPV Nov 2023)

Q.5 What do you understand by Surge current measurement, Cavity breakdown, Paschen’s law? Explain each. (RGPV Nov 2023)

Q.6 Explain how the temperature affects the breakdown strength of solid dielectrics? (RGPV Dec 2020)

Q.7 Briefly explain various numerical methods for estimation of electric field in dielectric materials. (RGPV Dec 2020) 

Q.8 Explain different insulating materials used in rotating machines. (RGPV Dec 2020)

Q.9 Classify HV insulating media. (RGPV Dec 2020)

Unit III Generation of HV AC DC and Impulse Voltage and Current

Q.1 A Tesla coil creates high frequency and high voltage. Why does this allow current to flow in objects that are near the coil? (RGPV Nov 2023)

Q.2 What is high voltage test? Why do transformers have high voltage tests? (RGPV Nov 2023)

Q.3 What is the method of control tripping of impulse generator? Why triggering is required in an impulse generator? (RGPV Nov 2023)

Q.4 Discuss the functions of trigatron gap. (RGPV Dec 2020)

Q.5 Define the terms creep age distance an impulse voltage? (RGPV Dec 2020)

Unit IV Measurement of High Voltages

Q.1 What is the principle of a sphere gap for measurement of high voltages? Explain how the sphere e gap can be used to measure the peak value of voltages. What are the parameters and factors that influence such voltage measurement? (RGPV Nov 2023)

Q.2 With the help of a suitable diagram, describe the principle of operation of the generating voltmeter used for measuring high DC voltages. (RGPV Nov 2023)

Q.3 What are the conditions to be satisfied by a potential divider to be used for impulse work? (RGPV Nov 2023)

Q.4 List the characteristics of switching surges. (RGPV Dec 2020)

Q.5   State different tests to be conducted on H.V Insulators. (RGPV Dec 2020)

Q.6 Define surge voltages. Explain how they are distributed in the windings of power apparatus. (RGPV Dec 2020)

Q.7 Write short notes on Surge current measurement. (RGPV Dec 2020)

Unit V High Voltage Tests on Electrical Apparatus

Q.1 Mention the different electrical tests done on isolators and circuit breakers. (RGPV Nov 2023)

Q.2 How are insulators tested to determine flash-over voltages? (RGPV Nov 2023)

Q.3 Explain the different electrical tests done on isolators and circuit breakers. (RGPV Dec 2020)

Extra Questions

Q.1 What is the difference between a high voltage test and an insulation resistance test whereas both are basically insulation tests? (RGPV Nov 2023)

Q.2 How many pouring methods are there for a motor coil insulating paint? (RGPV Nov 2023)

Q.3 Define wave front time and wave tail time. (RGPV Dec 2020)

Q.4 What is the function of surge arrestor? (RGPV Dec 2020)

Q.5 Discuss their relative advantages and disadvantages. (RGPV Dec 2020)

— Best of Luck for Exam —