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Engineering Thermodynamics

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

1
1.27
0.75
1.35

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Engineering Thermodynamics
The state of a substance whose evaporation from its liquid state is complete, is known as

Perfect gas
Air
Vapour
Steam

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Engineering Thermodynamics
When the gas is heated at constant volume, the heat supplied

None of these
Increases the internal energy of the gas and increases the temperature of the gas
Does some external work during expansion
Both (A) and (B)

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Engineering Thermodynamics
Work done is zero for the following process

Free expansion
Throttling
Constant volume
All of the listed here

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Engineering Thermodynamics
One kg of carbon requires 4/3 kg of oxygen and produces ________ kg of carbon monoxide gas.

44138
44015
44142
44046

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Engineering Thermodynamics
The polytropic index (n) is given by

log (p2/ p1)/log (v1/ v2)
log (v1/ v2)/ log (p1/p2)
log (p1p2)/log (v1v2)
log [(p1v1)/(p2v2)]

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MORE MCQ ON Engineering Thermodynamics

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