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Engineering Thermodynamics

Engineering Thermodynamics
The energy of molecular motion appears as

Heat
Surface tension
Friction
Potential energy

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Engineering Thermodynamics
A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as

Thermodynamic cycle
Reversible cycle
None of these
Irreversible cycle

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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 + rγ - 1
1 + (1/ rγ - 1)

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Engineering Thermodynamics
The pressure exerted by an ideal gas is ________ of the kinetic energy of all the molecules contained in a unit volume of gas.

Two-third
Three-forth
One-half
One-third

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Engineering Thermodynamics
The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is

8314 kgfm/mol °K
848 kgfm/mol °K
29.27 kgfm/mol °K
427 kgfm/mol °K

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Engineering Thermodynamics
An isothermal process is governed by

Avogadro's law
Charles' law
Gay-Lussac law
Boyle's law

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MORE MCQ ON Engineering Thermodynamics

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