Following data refers to a test on a petrol engine. Indicated power (=30 mathrm{~kW}), Brake power (=26)
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Following data refers to a test on a petrol engine. Indicated power \(=30 \mathrm{~kW}\), Brake power \(=26\) \(\mathrm{kW}\), Engine speed \(=1800 \mathrm{RPM}\), Brake specific fuel consumption \(=0.35 \mathrm{~kg} / \mathrm{kWh}, \mathrm{C} . \mathrm{V}\). of fuel \(=\) \(44,000 \mathrm{~kJ} / \mathrm{kg}\)
Calculate : (1) \(\eta_{\text {mech }}(2)\left(\eta_{\mathrm{th}}\right)_{i}(3)\left(\eta_{\mathrm{th}}\right)_{b}\).
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