Answer Posted / ashish
It generally occure at high voltage transmission. When
dielectric voltage becomes more than 30v\cm . than it
ionise the sorrounding air . So the air outside the
conductor surface becames conducive and looks bluish and
due to dielectric breakdown of air a hissing noise comes
from surrounding, Called as corona !
Is This Answer Correct ? | 68 Yes | 8 No |
Post New Answer View All Answers
why we used ZNO in Lightning arrester.
What is meant by load angle of an alternator? Upon what factors does the load angle depend?
state the disadvantages of carbon filament???
What is the actual calculation for transformer short circuit test?.
Write down the design procedure of commutaj.
What is inverse definite minimum time lag relay? Where is it use?
What is the formula for calculating the Instantaneous Short Circuit & overcurrent for any breaker
What is BusBar integrity test and how it is conducted?
What is a Phase shift meter? Where can I get one?
i want some interview related questions with their answers which can help for attend the interviews...
What is star-delta transformer?
1.Can we use 6.6/11KV 300sq mm xlpe 3core cable for LT use (415 Volt). 2. If we use it for LT then what is the current rating
EXPLAIN THE TRANSFORMER MAINTENANCE?
if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?
How to Preparation of online test