Engineering Thermodynamics
First law of thermodynamics

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

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Engineering Thermodynamics
Extensive property of a system is one whose value

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

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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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