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Engineering Thermodynamics

Engineering Thermodynamics
The entropy __________ in an irreversible cyclic process.

None of these
Increases
Remains constant
Decreases

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Engineering Thermodynamics
The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)

pv = (RT)m
pv = RTm
pv = mRT
pvm = C

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Engineering Thermodynamics
According to Gay Lussac’s law for a perfect gas, the absolute pressure of given mass varies directly as

Absolute temperature, if volume is kept constant
Temperature
None of these
Volume, if temperature is kept constant

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Engineering Thermodynamics
The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is

4.086
0.086
1.086
1.086

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Engineering Thermodynamics
The fuel mostly used in steam boilers is

Coking bituminous coal
Non-coking bituminous coal
Peat
Brown coal

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

Carnot cycle
Stirling cycle
Otto cycle
None of the listed here

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MORE MCQ ON Engineering Thermodynamics

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