A six cylinder, two-stroke cycle diesel engine is 83% efficient and has a cylinder constant of 0.998 while operating with a mean effective pressure of 15 kg/cm2 at a speed of 100 RPM. What is the metric brake horsepower developed?

Correct Answer: Option C — 7,455 mbhp

Metric brake horsepower for a two-stroke engine is calculated using cylinder constant, RPM, MEP, and mechanical efficiency. Multiplying the indicated power parameters by the 83% efficiency factor yields 7,455 mbhp for this specific operating configuration.