WHY HUMMING SOUND OCCURED IN HT TRANSMMISSION LINES ?

Answer Posted / nagaraju

when transmission voltage exceeds 30kv/cm breaking voltage
occurs due to this ionization will take place around the
conductor follwed by hissing noise ,color appearing ,light
glowing finally corona

Is This Answer Correct ?    11 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How could I get a certificate of competency as Electrical Supervisor? I have completed By BTech in Electrical this year(2012) for VJTI Mumbai Maharashtra. Is it compulsory to be produced while joining?

3006


what is the calculation formula for motor starting torque,running torque, running torque.

1222


solar energy light efficiency & disadvantages?

1567


WHAT IS THE MEANING OG (li = 7 In)

1530


Define what is difference between fuse and breaker?

669






how does this job compare with others you have aplied for?

1239


why in an industry; machine having rated 200 h.p stopped after power factor is maintained above 0.97 lag by control panel in view-of energy saving

1593


what is reactive power?, why its measured in VA ? is it transient behavior of system?

1791


Disadventage of cable-gland earthing if any ?

1664


how to failure indution motor insulation & how to improve heat in motor insulation

1416


when measure the core loss of three phase distribution transformer or three phase reactor loss, one phase shown negative watt loss. why??

1520


What is the Surge for 1.1 Phase Induction Motor(For Eg.1Hp) 2.3 Phase Induction Motor(For Eg.1Hp) 3.AirConditioner(For Eg 1Ton) 4.Refrigerator(For Eg 180Ltr or 160kW) 5.Induction Cooker 4. Ceiling Fan

1628


The windings of a transformer are divided into several coils, because?

814


What is accuracy of a measurement?

717


what is the transformer rush current?

1582