engineering recuitment ISRO Scientist Mechanical Mock Test Internal Combustion Engine Engine Performance Parameter Power and Efficiency
A two-stroke cycle petrol engine has piston diameter of 150 mm, length of stroke 400 mm and mean effective pressure of 5.5 bar. The engine runs at 120 rpm. Determine the mechanical efficiency of the engine if its brake power is 5.4 kW.
1
12.6%
2
34.7%
3
38.9%
4
69.5%