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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following is the lightest and most volatile liquid fuel?

None of these
Gasoline
Fuel oil
Kerosene

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Engineering Thermodynamics
In an isothermal process, the internal energy of gas molecules

Decreases
Increases
Remain constant
May increase/decrease depending on the properties of gas

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Engineering Thermodynamics
The first law of thermodynamics is the law of

Conservation of momentum
Conservation of energy
Conservation of mass
Conservation of heat

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Engineering Thermodynamics
A diathermic wall is one which

Prevents thermal interaction
Discourages thermal interaction
Permits thermal interaction
Encourages thermal interaction

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Engineering Thermodynamics
The following cycle is used for air craft refrigeration

Brayton cycle
Carnot cycle
Reversed Brayton cycle
Joule cycle

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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
30 kJ
84 kJ
114 kJ

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MORE MCQ ON Engineering Thermodynamics

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