ne mole of a monatomic gas ndergoes the following cycle: ) It is expanded isothermally from 3V1. i) Its pressure is decreased from E constant volume 3V1. sii) It is compressed adiabatically b initial state. P1 P2 ii iii P3 3 V1 3V,
ne mole of a monatomic gas ndergoes the following cycle: ) It is expanded isothermally from 3V1. i) Its pressure is decreased from E constant volume 3V1. sii) It is compressed adiabatically b initial state. P1 P2 ii iii P3 3 V1 3V,
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:ICw caiculations.
f) For each transformation, find the amount of
heat flow into or out of the gas.
2. One mole of a monatomic gas (y
undergoes the following cycle:
5/3)
%3D
a) Find
рг and
p3
in terms of p1, V1, and y.
(i) It is expanded isothermally from V1 to
3V1.
(ii) Its pressure is decreased from p2 to p3 at
constant volume 3V1.
b) Find T1, T2, and T3 in terms of p1, V1, and y.
c) What is the direction
(into or out of the gas) ? How about steps (ii)
and (iii) ?
heat flow in step (i)
(iii) It is compressed adiabatically back to its
initial state.
d) Find the amount of heat flow into or out of the
gas during step (i), in terms of p1, V1, and y.
Then do likewise for step (ii).
P1
e) Is the net work done by the gas during a
complete cycle positive or negative? Explain.
Is the net heat added to the gas during a
complete cycle positive or negative? Explain.
2
P2
ii
iii
P3
f) Do you think this cycle represents a heat
engine or a refrigerator? Why?
3V1
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Step 1: Given data
VIEWStep 2: Finding P2 and P3 in term of p1 , V1 and (y)
VIEWStep 3: Finding T1 ,T2 and T3 in term of p1 , V1 and (y)
VIEWStep 4: Direction of heat flow in step (1) , step (2) & step (3)
VIEWStep 5: Calculating the amount of heat flow in step 1 & step 2
VIEWStep 6: Finding the Net work by the gas during complete cycle
VIEWStep 7: Cycle is heat engine or Refrigerator?
VIEW
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