eli5: What makes electrical motors in cars so quiet?

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I mean in comparison with other motors, like power tools or even home appliances? Is it just sound insulation or is it a different kind of motor?

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Anonymous 0 Comments

With a normal car, or a lawn mower or a gas powered weed wacker, the thing that is powering the device is literally explosions. It’s pretty noisy. The noise associated with an electric motor is just movement and tiny bits of friction because of moving parts.

But you are also right that a car is a big hunk of metal and ends up absorbing a lot of that noise

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