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An engine working on the ideal Otto cycle takes in air at 1 kg/cm2 and 30°C which is compressed to 15 kg/cm2 at the end of the compression stroke. The temperature attained at the end of constant volume heat addition is 900°C. Assuming adiabatic index to be 1.4 determine

(i)     The compression ratio,

(ii)   The thermal efficiency,

(iii)  The temperature at the end of compression,

(iv) The pressure at the end of constant volume heating and

(v) The mean effective pressure.

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