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.
I. Introduction. There is a current increasing trend in requests for Brushless DC motors for high speed applications. For. instance, new impeller technology changed the way modern respirators are designed to be more. compact and quieter. Such performance requires motors that rotate up to 50 to 60 Krpm, and are.