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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)

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

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Engineering Thermodynamics
The fuel mostly used in steam boilers is

Peat
Brown coal
Non-coking bituminous coal
Coking bituminous coal

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Engineering Thermodynamics
Those substances which have so far not been resolved by any means into other substances of simpler form are called

Atoms
Molecules
Elements
Compounds

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Engineering Thermodynamics
Which of the following laws is applicable for the behaviour of a perfect gas?

Gay Lussac’s law
Boyle's law
All of these
Charles ‘law

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

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Engineering Thermodynamics
If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called

Adiabatic expansion
Free expansion
Hyperbolic expansion
Parabolic expansion

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