EE1003 – POWER SYSTEM TRANSIENTS QUESTION BANK UNIT 3

UNIT – III

1.        List the characteristics features of lightning strokes.

2.        What is tower footing resistance?

3.        What is arcing ground?

4.        What are the causes of over voltage?

5.        Define lightning phenomenon.

6.        Define Isokeraunic level.

7.        What are the types of protection afforded by ground wires?

8.        Define dart leader.

9.        Write short note about stepped leader and pilot streamer.

10.    Differentiate lightning and switching over voltages.

11.    Define overvoltage factor.

12.    State Mason’s theory of lightning.

13.    What are the characteristics of lightning strokes?