• # question_answer If the approximate average mean pressures during induction, compression, power and exhaust strokes of an internal combustion engine are respectively $\text{15}\,\,\text{k}\,\text{N/}{{\text{m}}^{\text{2}}}$ below atmosphere 200$k\,\text{N/m}$  above atmosphere, $\text{1000}\,\,\text{k}\,\text{N/}{{\text{m}}^{\text{2}}}$ above atmosphere and $20\,\,\text{N/}{{\text{m}}^{\text{2}}}$ above atmosphere, then the resultant mean effective pressure, in $k\,\text{N/}{{\text{m}}^{\text{2}}},$ is: A) 765                              B) 795C) 800                              D) 805

Resultant m.e.p. $=1000-200-\left( 15+20 \right)$$=765\,\text{kN/}{{\text{M}}^{\text{2}}}$