The figure above shows the path in the P-V plane that is followed by a reversibl
ID: 1399235 • Letter: T
Question
The figure above shows the path in the P-V plane that is followed by a reversible Carnot engine that uses monatomic Argon gas as its working substance. The system expands isothermally from A to B, expands adiabatically from B to C, contracts isothermally from C to D and contracts adiabatically from D to A.
(1)Going along the path from A to B, the volume of the gas _______.
a)increases
b)decreases
c)stays the same
d) can not be determine
(2)Going along the path from B to C, the pressure of the gas _______.
a)increases
b)decreases
c)stays the same
d) can not be determine
(3)Going along the path from B to C, the internal energy of the gas _______.
a)increases
b)decreases
c)stays the same
d) can not be determine
(4)Going along the path from B to C, heat flow ___________.
a) goes in to the gas
b) goes out of the gas
c) doesnt occour
d) can not be determine
(5)Going along the path from C to D, the internal energy of the gas _______.
a)increases
b)decreases
c)stays the same
d) can not be determine
(6) Going along the cycle from D to A, The internal energy ____________.
a)increases
b)decreases
c)stays the same
d) can not be determine
(7)Going along the cycle from D to A, The gas ____________.
a) does positive work
b)does negative work
c)does no work
d) leaks out
Explanation / Answer
(1)Going along the path from A to B, the volume of the gas _______.
a)increases
from A to B the system is expanding
(2)Going along the path from B to C, the pressure of the gas _______.
b)decreases
in adiabatic process PV^gamma = constant
from B to C the gas is expanding so volume increeases and the pressure decreases
+++++++++++++++++++++++++
(3)Going along the path from B to C, the internal energy of the gas _______.
b)decreases
the internal energy is given as dU = n*Cv*dT
here thr temperature is decreasing so the the internal energ decreases
++++++++++++++++++
(4)Going along the path from B to C, heat flow ___________.
c) doesnt occour
from B to C it is a adiabatic so no heat flows
+++++++++++++++
(5)Going along the path from C to D, the internal energy of the gas _______.
c)stays the same
from C to C it is isothermal process T is constant
dU = 0
internal energy remains same
++++++++++++++++
(6) Going along the cycle from D to A, The internal energy ____________.
a)increases
from D to A the temperature of the system increases
dU is positive
the internal energy increases
++++++++++++
(7)Going along the cycle from D to A, The gas ____________.
b)does negative work
here the volume of the system decreases so the gas does is negative work
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.