• # question_answer A four-stage compressor with perfect intercooling between stages compresses air from 1 bar to 16 bar. The optimum pressure in the last intercooler will be: A) 6 bar                B) 8 barC) 10 bar              D) 12 bar

Optimum pressure in the last intercooler $=\,\,{{\left( \frac{{{p}_{s}}}{{{P}_{1}}} \right)}^{3/4}}\,\,{{(16)}^{3/4}}=8\,\,bar$