Question 3Gas Turbine - 1st Asst/Chief

The correct answer is C) Combustion at a constant pressure. In a gas turbine engine, the component labeled "C" is likely the combustion chamber or combustor. The main principle of operation of the combustor is combustion at a constant pressure, which is a key feature of the Brayton cycle that underlies the working of a gas turbine. The other options are incorrect because: A) Bernoulli's principle is not directly relevant to the combustion process, B) Newton's laws describe the motion of objects, not the thermodynamic principles of the combustion chamber, and D) the Otto cycle is applicable to internal combustion engines, not gas turbines.