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Engineering Thermodynamics

Engineering Thermodynamics
The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)

pv = mRT
pv = RTm
pv = (RT)m
pvm = C

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Engineering Thermodynamics
Temperature of a gas is produced due to

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

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Engineering Thermodynamics
The efficiency of Diesel cycle increases with

Increase in cut-off
Decrease in cut-off
None of these
Constant cut-off

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Engineering Thermodynamics
In S. I. units, the value of the universal gas constant is

8.314 J/kg mole-K
83.14 J/kg mole-K
831.4 J/kg mole-K
8314 J/kg mole-K

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Engineering Thermodynamics
Which of the following is an irreversible cycle?

Ericsson
Stirling
Carnot
None of these

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Engineering Thermodynamics
When a gas is heated at constant pressure

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

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