Question: A 6 cylinder, 4 stroke I.C. engine is to develop (89.5 mathrm{~kW}) at (800 mathrm{rpm}). The stroke to bore ratio is 1.25:1. Assuming mechanical efficiency

A 6 cylinder, 4 stroke I.C. engine is to develop $89.5 \mathrm{~kW}$ at $800 \mathrm{rpm}$. The stroke to bore ratio is 1.25:1. Assuming mechanical efficiency of $80 \%$ and brake mean effective pressure of 5 bar, determine the diameter and stroke of the engine.

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