What is the difference between ARC & SPARK?
Answer Posted / meenakshi
An electric arc is an electrical breakdown of a gas which
produces an ongoing plasma discharge, resulting from a
current flowing through normally nonconductive media such
as air.A spark is triggered when the electric field
strength exceeds approximately 4–30 kV/cm—the dielectric
field strength of air.arc is continuous discharge whereas
spark is momentary.votage developed due to arc is
comparitively lower.example for natural spark is lightng
where the potential difference between cloud n grnd is very
high.
| Is This Answer Correct ? | 93 Yes | 24 No |
Post New Answer View All Answers
what are the advantages and disadvantages of oil filled cables over XLPE cables
What is ST and specify its range of voltage.
What do you mean by dependent and independent voltage sources?
I am about to write exam in RRB bangalore for the post of section engineer.please provide me with previous exam questions
Why armature rheostat is kept in maximum position?
explain different losses in a transformer.
what is size of 3phase 4wire cable to be used for 11 ton ductable A.C and how to calculate cable size for different load
If Polarization index of motor 8.75 at 500volts of medium voltage 4.16 KV motor what this mean winding good or bad pl answer if any reffrence book give me the link
In india, according to trade theory above 5 HP motor reqired star delta starter. But we R connect 11 KV motor with 14MW in Direct to line ( With VCB starter combination) Can U Guess, How it is possible ?????
what is the control circuit for operating the clean room air shower
What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA
1) Explain why we don't link the two earthing system ht and mv on a pole mounted transformer sub-station.
exolain the star delta connection
Why the standard of ambient teperature mentioned as 40 degree celcius in machines.
IF alternator SCR value will be high means what happen in alternator efficency at operating power factor of 0.8