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Engineering Thermodynamics

Engineering Thermodynamics
The same volume of all gases would represent their

Molecular weights
Gas characteristic constants
Specific weights
Densities

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Engineering Thermodynamics
When gas is heated at constant pressure, the heat supplied is utilized in

Increasing the internal energy of gas and also for doing some external work
Doing some external work
None of these
Increasing the internal energy of gas

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Engineering Thermodynamics
The main cause for the irreversibility is

Unrestricted expansion
Mechanical and fluid friction
All of these
Heat transfer with a finite temperature difference

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Engineering Thermodynamics
When a gas is heated at constant pressure

Its volume will increase
Neither temperature not volume will increase
Its temperature will increase
Both temperature and volume will increase

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Engineering Thermodynamics
The state of a substance whose evaporation from its liquid state is complete, is known as

Air
Steam
Vapour
Perfect gas

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Engineering Thermodynamics
The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)

1 + (T2/T1)
1 - (T2/T1)
1 - (T1/T2)
(T1/T2) - 1

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MORE MCQ ON Engineering Thermodynamics

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