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 .

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!

What would you like to do?

Why hissing sound in high voltage over head line?

EHV and VHV substations tend to have a signature hum; this is due to small electrical arcs. This is normal. Most of the time this will not be audible on VHV and EHV power line (MORE)

What would you like to do?

What is the reason for humming sound in transformer?

1. THE INSULATION IS DETERIORATING 2. LOOSE TERMINATIONS 3. NO RUBBER FOOTING INSTALLED 4. OVERLOADING / UNBALANCED LOADING 5. Magnetostriction. When the core becomes magneti (MORE)

Signs Your Automatic Transmission Needs Repair

Review three signs that your automatic transmission is in need of diagnosis and repair. Discover some of the most common symptoms and the likely causes of these issues. Find o (MORE)

Buying High End Surround Sound

Today, it is important to have the latest technology, even if just for the sake of status. Many people want to have the latest and greatest TVs and also want to have speaker s (MORE)

Why is a Transmission Overhaul so Expensive

If you had your transmission overhauled in the 70s or 80s you could be in for sticker shock should you need this service on a more modern automobile. Find out why a transmissi (MORE)

Didgeridoo Sound Technique for Healing

Didgeridoo healing helps a person relax by concentrating on sound waves to block out thoughts causing distress. People seek this type of therapy to heal from disease and stres (MORE)

Transmission Repair in a Bottle

Can you pour something into your transmission that will actually solve internal problems? The answer might surprise you. Learn how these transmission miracle fluids work and i (MORE)

What would you like to do?

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 (MORE)

What would you like to do?

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 (MORE)

What would you like to do?

In Physics

Does high pitch sound travel in a straight line?

Not neccessarily. Any radiation from a point source is omnidirectional by definition - it spreads in all directions. That said, it's easier to focus/concentrate higher fre (MORE)