Engineering Thermodynamics
If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called

Hyperbolic expansion
Free expansion
Parabolic expansion
Adiabatic expansion

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Engineering Thermodynamics
Carnot cycle consists of

Two constant pressure and two isentropic processes
Two constant volume and two isentropic processes
Two isothermal and two isentropic processes
One constant volume, one constant pressure and two isentropic processes

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