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For a refrigerating system that works on Bell-Coleman cycle, which one of the following is not a process of the cycle in p-v diagram?

For a refrigerating system that works on Bell-Coleman cycle, which one of the following is not a process of the cycle in p-v diagram? Correct Answer Isothermal expansion process

The Bell-Coleman cycle has 4 processes namely isentropic compression process, constant pressure cooling process, isentropic expansion process and constant pressure expansion process.

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