Following data were collected from a four-stroke single cylinder I.C. engine at full load. Bore (=) (200

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Following data were collected from a four-stroke single cylinder I.C. engine at full load. Bore \(=\) \(200 \mathrm{~mm}\), stroke \(=280 \mathrm{~mm}\), speed \(=300 \mathrm{rpm}\), m.e.p. \(=5.6\) bar, torque \(=250 \mathrm{Nm}\). Oil consumption \(=4.2 \mathrm{~kg} / \mathrm{h}, \mathrm{C} . \mathrm{V} .=41,000 \mathrm{~kJ} / \mathrm{kg}\). Determine: (i) mechanical efficiency, (ii) indicated thermal efficiency, and (iii) brake thermal efficiency.

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