An engine of $250\text{ mm}$ bore and $375\text{ mm}$ stroke works on…

Question

An engine of $250\text{ mm}$ bore and $375\text{ mm}$ stroke works on Otto cycle. The clearance volume is $0.00263\text{ m}^3$. The initial pressure and temperature are $1\text{ bar}$ and $50^\circ\text{C}$. If the maximum pressure is limited to $25\text{ bar}$, find the following :

(i) The air standard efficiency of the cycle

(ii) The mean effective pressure for the cycle.

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