Question

An engine absorbs 1.66 kJ from a hot reservoir at 277°C and expels 1.16 kJ to a cold reservoir at 27°C in each cycle.

15. + 0/3 points Previous Answers SerPSE9 22.P.005. My Notes An engine absorbs 1.66 kJ from a hot reservoir at 277°C and expels 1.16 kJ to a cold reservoir at 27°C in each cycle. (a) What is the engine's efficiency? Your response differs from the correct answer by more than 10%. Double check your calculations. % (b) How much work is done by the engine in each cycle? Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. ) (c) What is the power output of the engine if each cycle lasts 0.295 s? Your response differs from the correct answer by more than 10%. Double check your calculations. kW Need Help? Read It Submit Answer Practice Another Version

Answer 1

&p= 1.66 kJ = 1.66 x aa Q<= 116 kJ =\.164ics at gy's (as Engine's eticiency now(work done) xlooy. On n=Qn- de xicot. (W= 8b-ac] -1.661103 - 1.16*10 x 100 % 1.164103 12 = 43.10 % (b) klork done by engine in caly cycle is W= anae = 1.664103% -1-16 X103 = 0.54103 W = 5005 (C) t= 0.295 see Power oceput pa y con pz 50 v tem 1694-97 0.995 Px 1694.9 P ~ 1695 W = 1.695710W Pa 1.695 kW)