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Engineering Thermodynamics

Engineering Thermodynamics
The following cycle is used for air craft refrigeration

Reversed Brayton cycle
Carnot cycle
Brayton cycle
Joule cycle

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Engineering Thermodynamics
Carnot cycle efficiency depends upon

Working condition
Temperature range of operation
Condition of engine
Properties of the medium/substance used

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Engineering Thermodynamics
The polytropic index (n) is given by

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

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Engineering Thermodynamics
A cycle consisting of ___ and two isothermal processes is known as Stirling cycle.

One constant pressure, one constant volume
Two constant pressure
Two isentropic
Two constant volume

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Engineering Thermodynamics
Characteristic gas constant of a gas is equal to

Cp + Cv
Cv /Cp
Cp /Cv
Cp - Cv

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Engineering Thermodynamics
Molecular volume of any perfect gas at 600 × 103 N/m² and 27°C will be

400 m3/kg mol
0.15 m3/kg mol
4.17 m3/kg mol
41.7 m3/kg mol

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MORE MCQ ON Engineering Thermodynamics

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