Discussion
A gas turbine works on which one of the following cycle ?
Answer: B
A gas turbine works on the Brayton cycle.
The Brayton (Joule) cycle has four processes: isentropic compression in the compressor, heat addition at constant pressure in the combustion chamber, isentropic expansion in the turbine, and heat rejection at constant pressure. This is exactly the sequence in a gas turbine.
The Otto cycle is the ideal cycle of petrol engines, the Dual cycle that of high-speed diesel engines, both with heat added in a closed cylinder. The Rankine cycle is the cycle of steam power plants, in which the working fluid changes phase.
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