A heat engine receives 1 kW heat at 1000 K and gives out 600 W as work with the rest as heat to the ambient. Find the second law efficiency.

A heat engine receives 1 kW heat at 1000 K and gives out 600 W as work

1.	A heat engine receives 1 kW heat at 1000 K and gives out 600 W as work with the rest as heat to the ambient. Find the second law efficiency.
A.	0.655
B.	0.755
C.	0.855
D.	0.955
Answer» D. 0.955