Three designs are proposed for an engine which is to operate between 500 K and 300 K. Design A claims to produce 150 J of work per 1000 J of heat input, design B 450 J of work per 1000 J and design C 300 J of work per 1000 J. Which of the designs would you choose?
1
A
2
B
3
C
4
None is suitable