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+//Chapter-2, Illustration 2, Page 57
+//Title: Gas Power Cycles
+//=============================================================================
+clc
+clear
+
+//INPUT DATA
+d=80;//Bore in mm
+L=85;//Stroke in mm
+Vc=0.06;//Clearance volume in litre
+n=0.22;//Actual thermal efficiency
+y=1.4;//Ratio of specific heats
+
+//CALCULATIONS
+Vs=(3.147/4)*(d^2)*L;//Stroke volume in mm^3
+Vt=Vs+(Vc*(10^6));//Total volume in mm^3
+rv=Vt/(Vc*(10^6));//Compression ratio
+ni=(1-(1/(rv^(y-1))));//Ideal thermal efficiency
+nr=(n/ni)*100;//Relative efficiency
+
+//OUTPUT
+mprintf('Relative efficiency of the engine is %3.1f percent',nr)
+
+
+
+
+
+
+
+//==============================END OF PROGRAM=================================