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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following parameters is constant for a mole for most of the gases at a given temperature and pressure

Enthalpy
Volume
Entropy
Mass

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Engineering Thermodynamics
In a reversible adiabatic process, the ratio of T1/T2 is equal to

(p1/p2)γ - 1/ γ
(v2/v1)γ - 1/ γ
(p2/p1)γ - 1/ γ
(v1/v2)γ - 1/ γ

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

735 J/kmol °K
83.14 J/kmol °K
848 J/kmol °K
29.27 J/kmol °K

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Engineering Thermodynamics
The atomic mass of nitrogen is __________ oxygen.

Less than
Equal to
More than
None of these

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Engineering Thermodynamics
Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant

Pressure
Temperature
Internal energy
Volume

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Engineering Thermodynamics
The efficiency of Carnot cycle is maximum for

Steam engine
Petrol engine
Reversible engine
Gas engine

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