My Profile
Active Members
TodayLast 7 Days
more...
Awards & Gifts
Online Exams
Fresher Jobs
Our fresher job section is exclusively for fresh graduates! Find jobs for freshers in major Indian
cities including Bangalore, Chennai, Hyderabad, Pune or Kochi
Resources
Find educational articles, blogs, discussion threads and other resources.
Colleges
Find details about any college in India or search for courses.
|
Download Model question papers & previous years question papers
|
Posted By: Sra1 Member Level: Diamond Posted Date: 02 Jun 2008
|
2008 Jawaharlal Nehru Technological University Electrical and Electronics Engineering HIGH VOLTAGE ENGINEERING (III B.Tech II Semester Regular Examinations, Apr/May 2008) Question paper
Set No 3
--------------
III B.Tech II Semester Regular Examinations, Apr/May 2008
HIGH VOLTAGE ENGINEERING
(Electrical & Electronic Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
* * * * *
1. Explain the applications of insulating materials in the construction of capacitors. [16]
2. State and explain Pachen’s law. Derive the expressions for (pd)min and (Vb)min. Assume A=12, B=365 and ?=0.02 for air. Determine the (pd)min and (Vb)min.[16]
3. (a) What are the mechanisms that lead to intrinsic breakdown of a solid?
(b) Explain about the treeing in solid insulating materials. [8+8]
4. (a) Derive an expression for voltage efficiency of single stage impulse generator.
(b) An impulse current generator has total capacitance of 15 µF, the charging voltage of 125 kV, the circuit inductance 2 mH and the dynamic resistance 1ohm. Find the peak current and wave shape of the wave. [8+8]
5. Discuss and compare the performance of
(a) Resistance
(b) Capacitance potential dividers for measurement of impulse voltages? [8+8]
6. Derive the expressions for the voltage and current waves on long transmission lines and obtain the surge impedance of the line? [16]
7. What is non destructive testing of insulating materials? Give very briefly the characteristics of these methods. [16]
8. Mention the different electrical tests done on isolators and circuits breakers. [16]
Return to question paper search
|
|
|
Submit Previous Years University Question Papers and make money from adsense revenue sharing program
Are you preparing for a university examination? Download model question papers
and practise before you write the exam.
|
Watch TV Channels
|