Assuming you maintain the same power output, how will a decrease in the compressor inlet air temperature effect a gas turbine engine's efficiency and fuel consumption?

Correct Answer: Option A — Efficiency will increase and fuel consumption will decrease.

Lower compressor inlet temperatures increase air density, allowing for a greater mass flow rate through the engine. This increased mass flow improves the Brayton cycle efficiency, enabling the turbine to produce the same power output with less fuel consumption, thereby optimizing the engine's overall operational performance and thermal efficiency.