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Engineering Thermodynamics

Engineering Thermodynamics
The gas constant (R) is equal to the __________ of two specific heats.

Sum
Difference
Product
Ratio

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Engineering Thermodynamics
The same volume of all gases would represent their

Gas characteristic constants
Specific weights
Molecular weights
Densities

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Engineering Thermodynamics
Diesel cycle consists of __________ processes.

Two constant pressure and two isentropic
One constant pressure, one constant volume and two isentropic
Two constant volume and two isentropic
Two constant volume and two isothermal

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Engineering Thermodynamics
The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called

Specific heat at constant volume
Kilo Joule
Specific heat at constant pressure
None of these

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Engineering Thermodynamics
The polytropic index (n) is given by

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

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Engineering Thermodynamics
The value of the product of molecular weight and the gas characteristic constant for all the gases in S.I. units is

735 J/kmol °K
29.27 J/kmol °K
83.14 J/kmol °K
848 J/kmol °K

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