• question_answer In a De Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure as the minimum cross-section will be: A) 3.3 bar             B) 5.46 barC) 8.2 bar             D) 9.9 bar

Throat pressure, ${{p}_{2}}={{p}_{1}}{{p}_{1}}{{\left[ \frac{2}{n+1} \right]}^{\frac{n}{n-1}}}$ $=10{{\left[ \frac{2}{2.3} \right]}^{\frac{13}{0.3}}}=5.46\,\,bar$