Engineering Thermodynamics
When the gas is cooled at constant pressure,

Its volume increases but temperature decreases
Its temperature increases but volume decreases
Both temperature and volume decreases
Both temperature and volume increases

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Engineering Thermodynamics
Which of the following is the correct statement?

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

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Engineering Thermodynamics
Extensive property of a system is one whose value

Depends on the mass of the system like volume
Does not depend on the mass of the system, like temperature, pressure, etc.
Is not dependent on the path followed but on the state
Is dependent on the path followed and not on the state

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