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 infinite Busbar?

4 Answers   Equate,

What is formula of capacitor for 1-phase power connection.how to improve PF. Suppose I want to connect capacitor in refrigerator to reduce power consumptions.

0 Answers  

different between horse power and break horse power

2 Answers   Allied Group,

what are RCBO ?

4 Answers   GE,

can we correct the p.f.of ac generator?

2 Answers   APGenco,

How to select Main CB Rating for 220 KW Load?

3 Answers   Voltech,

what is resonance in electrical circuit and its effect? where we get high resonance and low resonance?

1 Answers  

how to calculate single phase motor efficiency ?

0 Answers   Bhel,

what is the diffrence between earth and neutral.

1 Answers  

what is the calculation of current when a clampmeter is attached to two phases of any drives.

3 Answers   ABB,

what happens when back feeding supply accidently collapses with normal supply ??? How?? [that is sometimes in a substation 11kv feeder if their ws long time permit work, back feeding supply will provide from nearest substation... if accidently after the permit work,they charged the feeder without removing back feeding wat will happen...?]

1 Answers   KSEB,

Why earthing done?

1 Answers   CBRE,