A gas turbine cycle consists of___________________?
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Answer: D. two isentropics and two constant pressures
Explanation
A gas turbine cycle relies on the Brayton cycle, which features two constant pressure heat transfer stages. Compression and expansion phases within the turbine and compressor are modeled as ideal isentropic processes. Combining two isentropic and two constant pressure processes accurately describes the standard open gas turbine operation. The Brayton cycle serves as the thermodynamic foundation for modern jet engines and stationary gas turbines. Isentropic processes are both adiabatic and reversible, meaning they involve no entropy change during operation. Constant pressure heat addition simulates the combustion chamber process in continuous flow thermal power plants.
Option A describes the Carnot cycle, which utilizes two isothermal and two isentropic process stages. Option B represents the Otto cycle, featuring constant volume heat addition typical of spark ignition engines. Option C mixes different cycle definitions and does not accurately represent standard gas turbine operations.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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