An open cycle gas turbine engine is best described by which of the following statements?

Correct Answer: Option D — Working fluids are taken in, transformed, and then discarded.

Open cycle gas turbines operate by continuously drawing in ambient air, compressing it, adding fuel for combustion, and exhausting the resulting gases directly into the atmosphere. Because the working fluid is not recycled, the engine must constantly intake new air to maintain the Brayton cycle process.