Engineering Thermodynamics
When a system changes its state from one equilibrium state to another equilibrium state, then the path of successive states through which the system has passed, is known as

None of the listed here
Thermodynamic law
Thermodynamic process
Thermodynamic cycle

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Engineering Thermodynamics
In order that a cycle be reversible, following must be satisfied

When heat is being absorbed, temperature of hot source and working substance should be same
All of these
Free expansion or friction resisted expansion/compression process should not be encountered
When beat is being rejected, temperature of cold source and working substance should be same

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