Question: A petrol engine with bore (150 mathrm{~mm}) and stroke (200 mathrm{~mm}) has a clearance volume of 700 litres. If the indicated thermal efficiency is 0.30

A petrol engine with bore $150 \mathrm{~mm}$ and stroke $200 \mathrm{~mm}$ has a clearance volume of 700 litres. If the indicated thermal efficiency is 0.30 , find the relative efficiency. Take $\gamma=1.4$.

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