For a period of 0.2 hour of test, 620 grams of fuel with density of 875.4 Kg/m^3 at 37.5 degree-C are completely burned with air at air-fuel ratio of 14 Kg of air per one Kg of diesel fuel. The compression ratio is 14. Using a brake torque analysis, the dynamometer reads a scale of 85 Kg with 35 cm arm at 440 rpm. (i) Find the brake thermal efficiency of a supercharged 4-cylinder, 4 stroke cycle Diesel engine with a bore and stroke of 10cmx16cm. Note: recquires unit analysis

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