Answer / saroj kanta nayak

When a high or extra high voltage transmitted in a
transmission line, due to magnetic effect on the core of
the conductor all most all electronics pass on the surface
of the conductor. 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 !

Due to corona OZONE formation on the outside surface of the
conductor. The effect of this to the power system is called
as corona effect.

Answer / dinesh kumar

A bluish flame and hissing sound appeared on outer conductor
of a transmission line due to atmospheric moisture is
termed as corono

Answer / munesh

A voilet glow, hissing noise and the production of ozone
gas on the condustor is called CORONA.

Answer / 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 !

Answer / a.kossay

corona appears due to the ionizing of the surronding air
due to the electromagnetic fields surronding the cable it
has two names dark corona and corona and it a appear as
redd bluish glue it has adv and dis adv.

Answer / mohammad harunur rashid

The phenomenon of violet glow,hissing noise and production
of ozone gas in an overhead transmission line is known as
corona.

Answer / daher

it generally occure at high voltage overhead transmission
lines,when the dielectric voltage becomes more than
30v/cm.the the surrounded air becomes ionized meaning
conductive and hissing noise issued due to the saturated
air by electronic, and a violet color could be seen.their
are some advantages of this phenomena we can get,one of
theme in cold region while the ice accumulate over the T.L
the heat that emitted due to the accident of electronic
dissolve the ice otherwise may the WEIGHT OF T.L becomes so
heavy and break the structures of the O.H.T.L.

Answer / physics

when air is passed through conductor having high electric
field, velocity of electrons increases so this electrons
collide with other atom and leads to ionisation in air at
certain stage breakdown occur between the conductor with
some violet glow which produce ozone gas with some hissing
noise

Answer / khilendra pant

When the voltage is high enough, electrons are attracted to
ground (at
lower potential) with sufficient energy to ionize air. It
is this breakdown
that produces the corona.

Answer / sangita chattoraj

When violet glow with a hissing sound and ozone gas is
produced in an overhead transmission line, the phenomenon
is called corona effect

what is surge impedance loading and it's significant in power system?

2 Answers  

why transformer neutrol is grounding

6 Answers  

how to improve power factor correction?

3 Answers  

Can you tell me more about pu systems (per unit systems )calculation in large power systems? how to get the base for voltage and power in generator, transformator and transmission lines?

0 Answers  

why r use the wave taper in the substation ?

2 Answers   L&T,

15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help

0 Answers  

What the methode get earth resistance?

2 Answers  

how commomn gate triggering is given for TRIAC ? other thyristor wont be efffected?

0 Answers   BARC,

On what basis do you decide the ONAN (Oil Natural air natural) or Dry type transformer for a project?

0 Answers   Semac,

DC transmission

0 Answers  

what is the use of excitation transformer in LAVT PANEL?

2 Answers  

what is difference Auto-transformer and ICT ?

1 Answers   CG, Descon,