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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following variables controls the physical properties of a perfect gas?

All of these
Volume
Temperature
Pressure

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Engineering Thermodynamics
For a perfect gas, according to Boyle’s law (where P = Absolute pressure, V = Volume and T = Absolute temperature)

T/P = constant, if v is kept constant
P/T = constant, if v is kept constant
P v = constant, if T is kept constant
V/T = constant, if p is kept constant

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Engineering Thermodynamics
The energy of molecular motion appears as

Heat
Surface tension
Friction
Potential energy

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Engineering Thermodynamics
Kelvin Planck's law deals with

Conservation of work
Conversion of work into heat
Conservation of heat
Conversion of heat into work

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Engineering Thermodynamics
The heat and work are mutually convertible. This statement is called ___ law of thermodynamics.

Second
Third
First
Zeroth

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Engineering Thermodynamics
If a gas vapour is allowed to expand through a very minute aperture, then such a process is known as

Hyperbolic expansion
Throttling
Free expansion
Adiabatic expansion

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