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Engineering Thermodynamics

Engineering Thermodynamics
The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)

2 Ru × T
Ru × T
3 Ru × T
1.5 Ru × T

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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

Internal energy
Temperature
Volume
Pressure

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Engineering Thermodynamics
The heat and mechanical energies are mutually convertible. This statement was established by

None of these
Joule
Boyle
Charles

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Engineering Thermodynamics
The absolute zero pressure will be

At the temperature of - 273 K
When molecular momentum of the system becomes zero
At the center of the earth
At sea level

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Engineering Thermodynamics
The pressure of a gas in terms of its mean kinetic energy per unit volume 'E' is equal to

E/3
E/2
2E/3
3E/4

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Engineering Thermodynamics
When the gas is cooled at constant pressure,

Its volume increases but temperature decreases
Both temperature and volume decreases
Its temperature increases but volume decreases
Both temperature and volume increases

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MORE MCQ ON Engineering Thermodynamics

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