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Engineering Thermodynamics

Engineering Thermodynamics
For which of the following substances, the gas laws can be used with minimum error

Saturated steam
Dry steam
Wet steam
Superheated steam

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Engineering Thermodynamics
The behavior of a perfect gas, undergoing any change in the variables which control physical properties, is governed by

Gay-Lussac law
Charles' law
Boyle's law
All of the listed here

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Engineering Thermodynamics
One kilowatt is equal to

100 N-m
1 × 106 N-m/s
1 N-m/s
1000 N-m/s

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Engineering Thermodynamics
Absolute zero pressure will occur

When molecular momentum of the system becomes zero
Under vacuum conditions
At sea level
At a temperature of 273°K

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Engineering Thermodynamics
A mixture of gas expands from 0.03 m3 to 0.06 m3 at a constant pressure of 1 MPa and absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is

54 kJ
84 kJ
30 kJ
114 kJ

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Engineering Thermodynamics
The area under the temperature-entropy curve (T – s curve) of any thermodynamic process represents

Heat absorbed
Either heat absorbed or heat rejected
None of the listed here
Heat rejected

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MORE MCQ ON Engineering Thermodynamics

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