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Engineering Thermodynamics

Engineering Thermodynamics
The value of cp/cv for air is

2.3
1.4
1
1.45

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Engineering Thermodynamics
Second law of thermodynamics defines

Internal energy
Entropy
Heat
Work

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Engineering Thermodynamics
The absolute zero pressure will be

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

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Engineering Thermodynamics
The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar and the value of 'g' is 9.81 m/s2. The absolute pressure in the vessel is

26.03 bar
23.97 bar
25 bar
34.81 bar

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Engineering Thermodynamics
A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is

54°C
327°C
654°C
108°C

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Engineering Thermodynamics
The value of n = 1 in the polytropic process indicates it to be

Reversible process
Irreversible process
Adiabatic process
Isothermal process

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MORE MCQ ON Engineering Thermodynamics

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