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Engineering Thermodynamics

Engineering Thermodynamics
The standard value of atmospheric pressure taken at sea level is

1.013 bar
760 mm of Hg
1013 × 102 N/m2
All of these

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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

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

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Engineering Thermodynamics
The absolute zero pressure can be attained at a temperature of

0°C
273 K
-273°C
None of these

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Engineering Thermodynamics
The general law for the expansion or compression of gases, is

pv = C
pvn = C
pv = m R T
pvγ = C

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Engineering Thermodynamics
An adiabatic process is one in which

All of these
The change in internal energy is equal to the mechanical work done
The temperature of the gas changes
No heat enters or leaves the gas

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Engineering Thermodynamics
The efficiency of the Carnot cycle may be increased by

Increasing the highest temperature
Increasing the lowest temperature
Keeping the lowest temperature constant
Decreasing the highest temperature

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MORE MCQ ON Engineering Thermodynamics

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