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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following processes is irreversible process?

Adiabatic
Isothermal
All of these
Throttling

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Engineering Thermodynamics
The value of cp/cv for air is

1.45
2.3
1.4
1

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Engineering Thermodynamics
When the expansion or compression takes place according to the law pvn = C, the process is known as

Polytropic process
Adiabatic process
Isothermal process
Hyperbolic process

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Engineering Thermodynamics
Minimum work in compressor is possible when the value of adiabatic index ā€˜n’ is equal to

0.75
1.35
1.27
1

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Engineering Thermodynamics
The property of a working substance which increases or decreases as the heat is supplied or removed in a reversible manner, is known as

Entropy
External energy
Enthalpy
Internal energy

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Engineering Thermodynamics
One kg of carbon monoxide requires 4/7 kg of oxygen and produces

11/7 kg of carbon dioxide gas
8/3 kg of carbon monoxide gas
11/3 kg of carbon dioxide gas
7/3 kg of carbon monoxide gas

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