Question

What is the efficiency of the system, if the actual work output from the process is 10 J and work output for a reversible process is 40 J?

(a) 10%

(b) 25%

(c) 40%

(d) 65%

The question was asked in an online interview.

I need to ask this question from Efficiency topic in portion 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

Answer 1

Right option is (b) 25%

To elaborate: Efficiency = 10/40*100 = 25%.