An open system is one in which - Engineering Thermodynamics Quiz

Mechanical Engineering : Engineering Thermodynamics - Quiz(MCQ)

An open system is one in which

heat and work crosses the boundary of the system, but the mass of the working substance does not crosses the boundary of the system

mass of the working substance crosses the boundary of the system but the heat and work does not crosses the boundary of the system

both the heat and work as well as mass of the working substance crosses the boundary of the system

neither the heat and work nor the mass of the working substance crosses the boundary of the system

Correct Answer : Option (C) : both the heat and work as well as mass of the working substance crosses the boundary of the system

Recently Updated in Engineering Thermodynamics Questions

When work is dissipated into internal energy, what is the change in the disorderly motion of molecules.

increases

decreases

remains the same

None of the above

Correct Answer : increases

Explanation : We know that increase in internal energy causes more random motion.

The entropy change of a system between two identifiable equilibrium state is ___ when the intervening process is reversible or change of state is irreversible.

same

different

depends on the process

None of the above

Correct Answer : same

Which of the following is an example of low grade energy?

heat or thermal energy

heat from combustion of fossil fuel

heat from nuclear fission or fusion

All of the above

Correct Answer : All of the above

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