Assignment for Weak Students SUBJECT: HIGH VOLTAGE ENGINEERING-2160904

 SUBJECT: HIGH VOLTAGE ENGINEERING-2160904

Assignment 1 :-ELECTROSTATIC FIELDS & FIELD STRESS CONTROL Co-1                

1.   Explain  Finite Element Method with its advantages and disadvantages

2.   Explain Finite Difference Method (FDM) with its advantages and disadvantages.

Assignment 2:-   GENERATION OF HIGH VOLTAGE AND CURRENT Co-2

1.   Explain Van de Graff generator.

2.   Explain the different schemes for cascade connection of transformers for producing very high A.C voltages

3.   An 8 stage impulse generator has a stage capacitance of 0.13 uF and charging voltage of 175 kv. The test specimen capacitance is 500 pF. Find wave front and wave tail resistance needed to produce 1.2/50 u sec impulse wave. What is maximum output voltage?

4.   Explain different circuit to produce impulse wave . Discuss their relative merits & demerits.

5.   Explain Capacitance voltage Transformers with its Schematic representation. Equivalent circuits its phasor diagram.

6.   What are the different methods of high DC voltage Measurement? Explain generating voltmeter method in detail.

7.   Explain Capacitance voltage Transformers with its Schematic representation. Equivalent circuits its phasor diagram.

  Assignment 3:-   BREAKDOWN IN SOLID, LIQUID AND GAS  DIELECTRIC  Co-3

1.   Explain purification and breakdown tests for Liquid Dielectric.

2.   Explain properties of a transformer oil (Mineral oil)

3.   Explain solid breakdown due to treeing & tracking.

4.   Explain Intrinsic Breakdown.

5.   Discuss Paschen’s law for Breakdown in Gases. How do you account for minimum voltage for breakdown under given pd condition?

Reference Books:

1.       Naidu M. S. and Kamaraju V., “High Voltage Engineering”, fourth Edition, Tata McGraw- Hill Publishing Company Limited, New Delhi, 2009.

2.      Wadhwa C.L., "High Voltage Engineering", third edition, New Age publishers, New Delhi, 2010.