The following reading was taken during the test of four-stroke single cylinder petrol engine: load on the brake drum = 50 kg, 06 04 diameter of brake drum 1250 mm, spring balance reading = 7 kg,...

The following reading was taken during the test of four-stroke single cylinder petrol engine: load on the brake drum = 50 kg,

diameter of brake drum 1250 mm, spring balance reading = 7 kg, engine speed = 450 rpm, fuel consumption = 4 kg/hr, calorific value of the fuel = 43000 kj/kg.

Calculate (a) Indicated thermal efficiency (b) Brake thermal

efficiency.

Assume mechanical efficiency as 70 %.

Aug 13, 2022

SOLUTION.PDF

The following reading was taken during the test of four-stroke single cylinder petrol engine: load on the brake drum = 50 kg, 06 04 diameter of brake drum 1250 mm, spring balance reading = 7 kg,...

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