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.
2.) How Motors Work. Electric motors can be powered by alternating (AC) current or direct current (DC). DC motors were developed first and have certain advantages and disadvantages. Each type of motor works differently but they all use the power of the electromagnetic field.