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+////Chapter No 14 Air Standard Cycles
+////Example No 14.11 Page No 316
+///Find diesel engine air standard efficiency
+//input data
+clc;
+clear;
+r=18;   //compression ratio of diesel engine
+K=6;    //cut-off ratio of the stroke in%
+rho=2.02; 
+gamma1=1.4;
+
+///Calculation
+//diesel engine air standard efficiency
+eta=100*((1-(1/r^(gamma1-1)))*(1/gamma1*(rho^(gamma1-1)/(rho-1))));
+
+//Output
+printf('diesel engine air standard efficiency %f percent \n',eta);