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Engineering Thermodynamics

Engineering Thermodynamics
The value of gas constant (R) in S. I. units is

0.287 J/kgK
287 J/kgK
28.7 J/kgK
2.87 J/kgK

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Engineering Thermodynamics
A cycle consisting of two adiabatic and two constant pressure processes is known as

Ericsson cycle
Otto cycle
Joule cycle
Stirling cycle

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Engineering Thermodynamics
The polytropic index (n) is given by

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

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Engineering Thermodynamics
For same compression ratio and for same heat added

Efficiency depends on other factors
Otto cycle is more efficient than Diesel cycle
Diesel cycle is more efficient than Otto cycle
Both Otto and Diesel cycles are equally efficient

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Engineering Thermodynamics
When a gas is heated at constant pressure

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

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Engineering Thermodynamics
The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as

Diesel cycle
Atkinson cycle
Dual combustion cycle
Rankine cycle

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MORE MCQ ON Engineering Thermodynamics

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