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Engineering Thermodynamics

Engineering Thermodynamics
Work done in a free expansion process is

Positive
Zero
Minimum
Maximum

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Engineering Thermodynamics
Which of the following items is not a path function?

Work
Kinetic energy
Thermal conductivity
Heat

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Engineering Thermodynamics
Absolute zero pressure will occur

At a temperature of 273°K
At sea level
Under vacuum conditions
When molecular momentum of the system becomes zero

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Engineering Thermodynamics
The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

δQ = T/ds
None of the listed here
dQ = ds/T
δQ = T.ds

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

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Engineering Thermodynamics
Which of the following has the minimum atomic mass?

Oxygen
Carbon
Sulphur
Nitrogen

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MORE MCQ ON Engineering Thermodynamics

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