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WHY HUMMING SOUND OCCURED IN HT TRANSMMISSION LINES ?
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Answer Posted / karthikeyan
because of carona effects
| Is This Answer Correct ? | 59 Yes | 6 No |
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Proviiding the Dedicated N earth and individual Body Earths ,Finally these all looped /Now my Question :- will it not harm in case of Transformer Fault current flows in Dediacted N Earthing to Looped Body Earthing.
can any one tell in easy method for circulating current ??
why starting current is high and resistance is almost 0 during the starting of motor dc motor...?
why the value of k is more in shell typr transformers?
hi frnz,can somebody give me any project work? i am a 2nd year student & interested in practical works...plz give me some projects
What is Surge Capacitor? Why it is require in Generator Circuit Breaker,inspite of surge arrester?
armature is that part in which current is induced since in dc motor we supply current to the conductor so why we call it armature?
There is any especial requirement for motor to drive through with VFD?
What is contract demand in solar system?
technically, what is the reason behind starting the motor star the delta connection .. and what other ways to do this rather than using " star-delta transformer"
transformer spections :: input voltage 0-110-230v; output volage 0-10-12-14v; amp=3A using CRNO CORE, capcaity=50VA primary turns = ? ; secondry turns =?
HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.
Tell me in detail about c.t. And p.t. ?
in 1-phase 230v,how in 3-phase 440v. in each phase in between 230v.
If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?
