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What causes a humming sound?

In: Cars & Vehicles [Edit categories]

Answer:

A humming bird

First answer by Xjd. Last edit by Xjd. Contributor trust: 40 [recommend contributor ]. Question popularity: 0 [recommend question].

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What causes humming sounds in your ear?
I have a whirring sound in my ears Can you tell me what is causing it?
What causes a humming sound in my ear?
Tinnitus
What is the cause of humming sound in the back of car?
on cars that run with fuel injection it would be the fuel pump, or high performance cars that use electric fuel pumps.
What would cause a humming sound when accelerating?
If it sounds like its coming from inside the car its probably the fuel pump if not its kind of hard to say.
What causes an electric humming sound in equipment?
The sounds are caused by the oscillations of the frequency changing from positive to negative when voltage is applied to electrical equipment. See related links below.