WHY HUMMING SOUND OCCURED IN HT TRANSMMISSION LINES ?

Answer Posted / jeevesh rohilla

corona is ans but these hissing sound is mostly in riny
season because of air surroung the conductor is more
ionised than other season. ov at extra high voltage

Is This Answer Correct ?    2 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

please send me privious exam's queation papers of section engineer(electrical).

1608


some basic standard questions on transformer.

1333


What is precision of a measurement?

681


List the disadvantages of constant k filters?

1083


slipring induction motor starting time Lrs operating why lrs starting time lrs outer body didn't get shock

1474






If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.

1157


I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

1459


I have iti elec, 1st aid, and 5 yrs experience in 7.5 mw power plant. Am i eligeble for 11kv license in telangana state..when, how to apply for that.?

1854


How to calculate no of EARTH PIT? Describe the formula as per IS standard?

3195


What is the function of RCBO? What are the different sensitivity ratings & each application?

2147


what is formula for calculate thermal overload in new numiricalrelay( not in bimetal relay)?

1795


In what condition the HT fuse breakes?

1497


A cylindrical wire is compressed in length by 10%. The percentage decrease in the resistance will be?????

1757


What is the gross weight to copper ratio in slip ring induction motor of 4000 HP,6.6 kv, 372amp, 992 rpm GE motor.

1917


what is consequences of neutral and earth connect?

1667