40. 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 horse power developed?

Brake horsepower is calculated by first determining indicated power using the cylinder constant, mean effective pressure, engine speed, and number of cylinders, then multiplying by the given mechanical efficiency. This results in a brake power of 7,455 mbhp.