Engineering Thermodynamics
The index of compression ‘n’ tends to reach ratio of specific heats ‘y’ when

Flow is uniform and steady
Process is isothermal
Process is isentropic and specific heat does not change with temperature
Process is isentropic

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Engineering Thermodynamics
First law of thermodynamics

All of these
Provides relationship between heat, work and internal energy
Does not enable to determine change in entropy
Enables to determine change in internal energy of the system

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Engineering Thermodynamics
Carnot cycle consists of

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

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