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Engineering Thermodynamics

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
When a gas is heated at constant pressure

Its volume will increase
Neither temperature not volume will increase
Both temperature and volume will increase
Its temperature will increase

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Engineering Thermodynamics
The value of 1 mm of Hg is equal to

13.33 N/m2
1333 N/m2
1.333 N/m2
133.3 N/m2

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Engineering Thermodynamics
In S. I. units, the value of the universal gas constant is

83.14 J/kg mole-K
8.314 J/kg mole-K
831.4 J/kg mole-K
8314 J/kg mole-K

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Engineering Thermodynamics
When cut-off ratio is ________; the efficiency of Diesel cycle approaches to Otto cycle efficiency

2
43834
Zero
43835

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Engineering Thermodynamics
Which of the following processes are thermodynamically reversible?

Free expansion
Isothermal and adiabatic
Throttling
Constant volume and constant pressure

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MORE MCQ ON Engineering Thermodynamics

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