Answer Posted / sulagna das
When a high or extra high voltage transmitted in a
transmission line as long as the air is subjected to a uniform electric field intensityof peak value less than 3×10⁶V/m,the flow of current between the two conductors of the line is negligible for practical purposes.but when the Electric field intensity(voltage gradient) reaches reaches this critical value(3×10⁶V/m),the air in immediate vacinity of conductor surface becames conducive and looks bluish or violet and due to dielectric breakdown of air and vibrating tendency of conductor a hissing noise comes out,it is Called as CORONA.
Due to corona OZONE and OXIDE OF NITROGEN formed on the outside surface of the
Conductor,there is a loss of power,there is a radio interferrence and a faint glow appeares around the conductor which is visible in dark.The effect of this to the power system is known as CORONA EFFECT.
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
what is gridrotor resistance starter
What is the lockout relay
Good day everyone,currently in our premise we using 30kw slip ring motor with resistance bank which we use as forward and reverse at conveyor bar handling. So,my question is how do we calculate the resistance bank which is suit the motor. Kindly,assist me... thank you
What is transformation ratio what it describes?
why we dont prefer ac voltage controller instead dimmerstat [if both have same rating] for conducting experiments in laboratories?
single phase power supply give to separate one steel coup with water, what reaction create
how much cable size required for 70 kilowatt load.
What is mean 2XWY
LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?
What is the rating factor for copper cable ( Specific value according to the type of laying ) & the voltage drop?
What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above
Pl.brief me any electrical major fault you have rectified.
why the India electrical supply transmission loss is high when compare to us
What is installed in PAC that is control the humidity
