QUESTION 44 The following processes occurs in a reversible thermodynamic cycle: 1-2: Reversible polytropic compression at pressure 0.5 bar at volume 0.08 m to a pressure 11 bar and specific volume 0.4 m/kg. The index of compression may be taken as n. 2-3: Reversibly expansion with expansion index of 2 to pressure 2.9 bar. 3-1: Reversible cooling at constant volume to the initial state. Calculate the work for the expansion in the process to 2 decimal places. Not in kilo or mega of unit.
QUESTION 44 The following processes occurs in a reversible thermodynamic cycle: 1-2: Reversible polytropic compression at pressure 0.5 bar at volume 0.08 m to a pressure 11 bar and specific volume 0.4 m/kg. The index of compression may be taken as n. 2-3: Reversibly expansion with expansion index of 2 to pressure 2.9 bar. 3-1: Reversible cooling at constant volume to the initial state. Calculate the work for the expansion in the process to 2 decimal places. Not in kilo or mega of unit.
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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Question
![estion Completion StatuS:
(a)
(b)
(c)
(d)
O a. (d) O b.(a) Oc(c) Od.(b)
QUESTION 44
The following processes occurs in a reversible thermodynamic cycle:
1-2: Reversible polytropic compression at pressure 0.5 bar at volume 0.08 m to a pressure 11 bar and specific
volume 0.4 m/kg. The index of compression may be taken as n.
2-3: Reversibly expansion with expansion index of 2 to pressure 2.9 bar.
3-1: Reversible cooling at constant volume to the initial state.
Calculate the work for the expansion in the process to 2 decimal places.
Not in kilo or mega of unit.
QUESTION 45
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Transcribed Image Text:estion Completion StatuS:
(a)
(b)
(c)
(d)
O a. (d) O b.(a) Oc(c) Od.(b)
QUESTION 44
The following processes occurs in a reversible thermodynamic cycle:
1-2: Reversible polytropic compression at pressure 0.5 bar at volume 0.08 m to a pressure 11 bar and specific
volume 0.4 m/kg. The index of compression may be taken as n.
2-3: Reversibly expansion with expansion index of 2 to pressure 2.9 bar.
3-1: Reversible cooling at constant volume to the initial state.
Calculate the work for the expansion in the process to 2 decimal places.
Not in kilo or mega of unit.
QUESTION 45
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Save All Answers
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曲
![Question Completion Status:
QUESTION 45
Which or the following is the correct statement?
Irreversible
Og.
engines
have
maximum
efficiency
O e. All engines f.All the
O c. The entropy
represents a
maximum
amount of
work
obtainable per
degree drop in
temperature
O d. The change in
entropy may be
regarded as a
measure of the
rate of the
availability of
heat for
transformation
into work
a.All the
reversible
O b. The increase
in entropy is
obtained from
reversible
and
irreversible
are
designed
engines
have the
as
a given
quantity of
heat at a low
engines
have the
reversible
in order to
obtain
maximum
efficiency
same
efficiency
same
temperature
efficiency
QUESTION 46
Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated cylinder from 3.7 bar,
220 °C to a volume of 0.085 m3. If the initial volume occupied was 0.02 m, calculate the gas constant to 3 decimal
places. Assume nitrogen to be a perfect gas and take cv = 0.63 k J/kg K.
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acer](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff1f47324-0347-48d6-9823-10d4cd31efec%2F1fe2c9ee-dc45-4a59-bc79-7fe03b13eead%2Fbmvtzf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question Completion Status:
QUESTION 45
Which or the following is the correct statement?
Irreversible
Og.
engines
have
maximum
efficiency
O e. All engines f.All the
O c. The entropy
represents a
maximum
amount of
work
obtainable per
degree drop in
temperature
O d. The change in
entropy may be
regarded as a
measure of the
rate of the
availability of
heat for
transformation
into work
a.All the
reversible
O b. The increase
in entropy is
obtained from
reversible
and
irreversible
are
designed
engines
have the
as
a given
quantity of
heat at a low
engines
have the
reversible
in order to
obtain
maximum
efficiency
same
efficiency
same
temperature
efficiency
QUESTION 46
Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated cylinder from 3.7 bar,
220 °C to a volume of 0.085 m3. If the initial volume occupied was 0.02 m, calculate the gas constant to 3 decimal
places. Assume nitrogen to be a perfect gas and take cv = 0.63 k J/kg K.
Click Save and Submit to save and submit. Click Save All Answers to save all ansuers.
Save All Answers
O Type here to search
acer
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