The automobile engine shown in the given figure produces power of 150 hp on a test stand while consuming fuel with heat content of 20.0 × 103 Btu/lbm at a rate of 1.10 lbm/min. A design engineer calculates the reversible power output from the engine as 233 hp. Determine the energy conversion efficiency of the engine.
1
44.5%
2
27.8%
3
67.3%
4
28.9%