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Engineering Thermodynamics

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

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

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Engineering Thermodynamics
The main cause for the irreversibility is

All of these
Unrestricted expansion
Mechanical and fluid friction
Heat transfer with a finite temperature difference

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Engineering Thermodynamics
Kelvin Planck's law deals with

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

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Engineering Thermodynamics
If value of n is infinitely large in a polytropic process pVn = C, then the process is known as constant

Temperature
Pressure
Volume
Enthalpy

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Engineering Thermodynamics
Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as

Second law of thermodynamics
Kinetic theory of gases
Zeroth law of thermodynamics
First law of thermodynamics

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Engineering Thermodynamics
The polytropic index (n) is given by

log (p1p2)/log (v1v2)
log (v1/ v2)/ log (p1/p2)
log [(p1v1)/(p2v2)]
log (p2/ p1)/log (v1/ v2)

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MORE MCQ ON Engineering Thermodynamics

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