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

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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
None of these
Increasing the internal energy of gas
Doing some external work

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Engineering Thermodynamics
The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)

1 - (1/r) γ/γ - 1
rγ - 1
1 - rγ - 1
1 - (1/r) γ - 1/ γ

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Engineering Thermodynamics
Measurement of temperature is based on

Second law of thermodynamics
Zeroth law of thermodynamics
First law of thermodynamics
Thermodynamic properties

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Engineering Thermodynamics
The total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as

Law of degradation of energy
None of the listed here
Law of conservation of energy
Law of equipartition of energy

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

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

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