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Engineering Thermodynamics

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

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Engineering Thermodynamics
A gas is compressed in a cylinder by a movable piston to a volume one half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be

30 Nm
3000 Nm
300 Nm
300,000 Nm

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Engineering Thermodynamics
For which of the following substances, the internal energy and enthalpy are the functions of temperature only

Water
Any gas
Perfect gas
Saturated steam

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Engineering Thermodynamics
The calorific value of gaseous fuel is expressed in

kJ/m2
kJ/kg
kJ
kJ/m3

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Engineering Thermodynamics
The efficiency of a Carnot engine depends on

Size of engine
Working substance
Temperatures of source and sink
Design of engine

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