What is the efficiency of a heat engine with heat input 5 J and work output 8 J?
(a) 40%
(b) 80%
(c) 160%
(d) 200%
The question was posed to me during an online interview.
This intriguing question comes from Efficiency topic in division Energy Balances that Include the Effects of Chemical Reaction, Ideal Processes, Efficiency and the Mechanical Energy Balance and Heats of Solution and Mixing of Basic Chemical Engineering