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.
The IEC minimum full-load efficiency standards are higher for 60 Hz motors than for 50 Hz motors. This is because as long as the motor torque is constant, I 2 R or winding resistance losses are the same at 50 Hz and 60 Hz.