What would you like to do?

Why humming sound occur in extra high tension transmission lines?

already exists.

Would you like to merge this question into it?

already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

exists and is an alternate of .

Why humming sound occur in extra high tension transmission lines?
The noise is better described as 'buzzing', rather than 'humming', and it is caused by the breakdown of the air's insulating properties, due to stress caused by electric fields set up in the vicinity of where the conductors are supported from insulators. The noise is accompanied by a pale blue discharge which becomes visible after dark.
1 person found this useful
Thanks for the feedback!
Why do power companies use high-voltage transmission lines?

Why do power companies use high-voltage transmission lines?

High voltage lines are used for power transmission because the high voltage means that less current flows for a given amount of energy transmitted. The lower current flow mean
What cause high reflected power in transmission line?

What cause high reflected power in transmission line?

Poorly matched terminating impedances will result in high reflection. Tuning networks on both ends are used to tune the source and load to the same impedance as the transmissi
How do you choose no of insulator in High Voltage transmission Line?

How do you choose no of insulator in High Voltage transmission Line?

Each insulator is rated according to its ability to insulate. For example, if one insulator is good for x volts, then four insulators will be required for a line conductor ope
What is the need of extra high voltage transmission lines?

What is the need of extra high voltage transmission lines?

from what i can remember its so that less energy is wasted when the electricity travels through the national grid . the voltage is then decreased afterwards .

What are the balls on high voltage transmission lines?

  The balls on overhead conductors are, belive it or not to make them visable to birds, helecoptors and planes etc, so they wont fly in to them.   They have no electric

Why the transmission line are at high voltage?

To reduce the power losses or conduction losses in transmission lines. - Yes its right. I will give a slightly improved answer. The size of coper conductor used for transm
In Physics

How does tension occur?

Tension is a force acting on a body and it occurs when the body is in a state of work.The direction of force acts on the opposite direction of work done.

Can high tension wires emit any sound audible to the human ear?

  I drove under high tension wires in a truck and could clearly hear a buzzing noise. I actually stopped the truck and sat under the wire for a moment to listen to the sou