Motor Plants & Auxiliary Boilers USCG Question #1339 (Set 26)

A four cylinder, four-stroke cycle, single acting diesel engine has a 740 mm bore and a 1500 mm stroke. What indicated power will be developed if the average mean effective pressure is 18 kg/cm2 at a speed of 90 RPM?

Official USCG Answer & Rule Citation

Correct Answer: Option A — 3416 kW

Indicated power for a four-stroke engine is calculated using mean effective pressure, piston area, stroke length, and number of working strokes per minute. Applying these parameters for a 740 mm bore and 1500 mm stroke yields 3416 kW.

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