Why is electric motor efficiency so important?

[@skizzarz]

awesome, thanks for uploading!

[@ehabahmed615]

kindly I have a simple one question the power that's written on nameplate Is it a input power or output power ?

[@skizzarz]

output

[@frednonprofit6506]

Skip to 1:19; good video after that

[@tomislavmiak580]

efficiency of everything is important lol