Engineering Thermodynamics
Carnot cycle consists of

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

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Engineering Thermodynamics
According to Avogadro’s law

The product of the gas constant and the molecular mass of an ideal gas is constant
Equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules
All of these
The sum of partial pressure of the mixture of two gases is sum of the two

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Engineering Thermodynamics
Which of the following is the correct statement?

All engines are designed as reversible in order to obtain maximum efficiency.
Irreversible engines have maximum efficiency.
All the reversible and irreversible engines have the same efficiency.
All the reversible engines have the same efficiency.

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