Coast Guard Exams
Question 114General Subjects - QMED70% to pass

The BTU value of fuel oil is determined by a/an _______________.

AI Explanation
The correct answer is B) calorimeter. The BTU (British Thermal Unit) value of fuel oil is determined by using a calorimeter. A calorimeter is a device that measures the amount of heat energy released or absorbed during a chemical reaction or change in the physical state of a substance. It is the standard method used to determine the energy content or heating value of various fuels, including fuel oil. The other options are incorrect because they do not directly measure the BTU value of fuel oil. A viscosimeter measures the viscosity of the fuel, a hydrometer measures the density, and an open cup test is used to determine the flash point, not the BTU value.