American AI is usually American Airlines, and usually appears because of a baggage fee paid at the airport, or a purchase made during a flight. posted 09/11/2012 Helpful (4)
Electric motors are in general, a lot more efficient that internal combustion engines. An average combustion engine has about 18â20%. A formula one engine, has about 50% of an efficiency.
Electric motors are not heat engines and cannot meaningfully be compared to combustion engines. However, large properly designed electric motors run at their best operating point can be in the 90's% efficient. Since the generator at a large electric power plant can be 98% efficient, I suspect that comparably sized electric motors can also reach this efficiency.