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Q15. The thermal efficiency of an air standard Otto cycle is 62% and the indicated mean effective pressure is 850 kN/m². The minimum cycle temperature is 300 K and the minimum cycle pressure is 98 kN/m².

(a) Sketch the cycle on p-V and T-S diagrams.

(b) Determine EACH of the following:

(i) The volume compression ratio;

(ii) The temperature after compression;

(iii) The specific work output;

(iv) The maximum cycle temperature.

Note: For air, C_v = 0.718 kJ/kg K and R = 0.287 kJ/kgK.