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
list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.
How to know of any cable size if there are not written on cabl?
PLZ EXPLAIN CORONA,SKIN,BIRD PALE,SPAN,SAG Effects of power cable.
why we use sinosidal voltage / current instead of others in system?
1. How many types of mangers? 2.How many types of capacitors? 3.pls tell me normally types alternator problems?
what is saturation kit?which use above 15 kw motors panel side.
why the active power flow of some line is increased when the active power of out is cut ?
What is load boxes ?
We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.
draw the block diagram of fire alarm?
What is float cum boost charging system?
why starting current is high and resistance is almost 0 during the starting of motor dc motor...?
WHAT IS THE FUNCTION OF SHORT CIRCUIT MAINTENANCE CT
What is the resistance of the field winding of a d.c. Shunt generator kept low?
What kind of Neutral CT can be placed in 11/0.433KV transformer to be used and what are its specification?