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Engineering Thermodynamics

Engineering Thermodynamics
The entropy __________ in an irreversible cyclic process.

Decreases
Increases
Remains constant
None of these

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Engineering Thermodynamics
In an isothermal process, the internal energy of gas molecules

Remain constant
Decreases
May increase/decrease depending on the properties of gas
Increases

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Engineering Thermodynamics
During which of the following process does heat rejection takes place in Carnot cycle?

Isothermal expansion
Isentropic compression
Isentropic expansion
Isothermal compression

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Engineering Thermodynamics
If in the equation pvn = C, the value of n = ∝, then the process is called

Adiabatic process
Isothermal process
Constant pressure process
Constant volume process

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Engineering Thermodynamics
If a gas vapour is allowed to expand through a very minute aperture, then such a process is known as

Hyperbolic expansion
Free expansion
Throttling
Adiabatic expansion

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Engineering Thermodynamics
An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is

Impossible
Feasible
Possible, but with lot of sophistications
Possible

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