A closed cycle gas turbine works on which of the following cycles:Group of answer choicesRankine CycleJoule CycleEricsson CycleCarnot Cycle

To determine which cycle a closed cycle gas turbine works on, let's analyze the options available:

1. Rankine Cycle: This cycle typically involves water/steam as the working fluid and is commonly used in steam power plants. It consists of four processes: isentropic expansion, isobaric heat addition, isentropic compression, and isobaric heat rejection. It is not applicable to gas turbines.

2. Joule Cycle: Also known as the Brayton cycle, this is the ideal cycle for gas turbines. It consists of two adiabatic processes (compression and expansion) and two isobaric processes (heat addition and rejection). Since gas turbines operate on a cycle involving the compression and expansion of gases, this is a strong candidate.

3. Ericsson Cycle: This cycle operates similarly to the Joule cycle but uses an ideal gas with a constant temperature heat addition and rejection process. While theoretically interesting, it is not commonly used in practical gas turbines.

4. Carnot Cycle: Although this cycle is fundamental in thermodynamics for defining maximum efficiency, it represents a theoretical model and is not directly applicable to practical gas turbines.

Conclusion

From the analysis, we conclude that the closed cycle gas turbine operates on the Joule Cycle. It uses air or other gases, making it suitable for gas turbines.

Final Answer: The closed cycle gas turbine works on the Joule Cycle.