Peoples Physics Book Version-2

(Marvins-Underground-K-12) #1

21.3. Examples http://www.ck12.org


c) First, we know that it is operating at 50% of ideal efficiency. We also know that the max efficiency of this engine
is 54%. So the engine is actually operating at


. 5 ×54%=27%


of 100% efficiency. So 240kW is 27% of what?


. 27 x=240kW⇒x=


240kW

. 27
=890kW

Free download pdf