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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following gas has a minimum molecular mass?

Methane
Hydrogen
Oxygen
Nitrogen

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Engineering Thermodynamics
The general law for the expansion or compression of gases, is

pvγ = C
pv = m R T
pvn = C
pv = C

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Engineering Thermodynamics
No liquid can exist as liquid at

Zero pressure
273°K
Vacuum
Centre of earth

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Engineering Thermodynamics
The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats)

1 + rγ - 1
1 - rγ - 1
1 + (1/ rγ - 1)
1 - (1/ rγ - 1)

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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 = (RT)m
pv = RTm

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Engineering Thermodynamics
First law of thermodynamics deals with

Conservation of mass
Conservation of momentum
Conservation of heat
Conservation of energy

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MORE MCQ ON Engineering Thermodynamics

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