Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / pravin kumar singh
In normal atmospheric condition ion & free electron are always present because of cosmic ray , radioactivity,& ultraviolet ray.When a voltage applied to the conductor a potential gradient in the air near to the conductor ,the free electron & ion start moving.But when these voltage increase very high ,the speed of the electron is very high,and they collide with the neutral molecule & disclosed the electron from it & farther electron acquire high speed & start colliding with the other molecules.the process of ionization is cumulative which finely result in electron avalanche.the ionization of air surrounding the conductors give rise the corona effect.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
wat system call?
armature winding of dc machine produce alternating emf then it convert in to dc by using commutator.But only we consider armature resistance why don't we consider inductive reactane effect?
What is ideal IR values for ground and neutral.
Define cuttoff frequency?
how to read idmt curva
what is the difference between 50 hz freq. and 60 hz freq.? which is better and economic in them ?
In diesel generator how AVR get voltage to excitation. And basic diagram DG EXCITATION CIRCUIT.
What is the dependency of stiffness on load angle??
Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault
salam&hi, i need to know about how can i calculate an enough current for the new building before i submit it to the suppliers
In a large office how do we calculate required number of light fittings, assuming fittings are 4x18W or 2x36W fluorescent fitting ?
Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.
What is voltage ratio of a transformer?
What is knee point voltage?
what does a string of resistors in a series will do?
