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Engineering Thermodynamics

Engineering Thermodynamics
A mixture of gas expands from 0.03 m3 to 0.06 m3 at a constant pressure of 1 MPa and absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is

54 kJ
30 kJ
114 kJ
84 kJ

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Engineering Thermodynamics
Properties of substances like pressure, temperature and density, in thermodynamic coordinates are

Cyclic functions
Point functions
Real functions
Path functions

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Engineering Thermodynamics
Temperature of a gas is produced due to

Kinetic energy of molecules
Repulsion of molecules
Its heating value
Surface tension of molecules

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Engineering Thermodynamics
The pressure of a gas in terms of its mean kinetic energy per unit volume 'E' is equal to

2E/3
3E/4
E/2
E/3

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Engineering Thermodynamics
Which of the following is the extensive property of a thermodynamic system?

Density
Temperature
Pressure
Volume

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

Both (B) and (C)
Increases the internal energy of the gas
Does some external work during expansion
Increases the temperature of the gas

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