The product of pressure and volume
is represented by an area on a p-V diagram. The area under the curve on a p-V diagram tells us the work done during the process. The area enclosed by the cycle will be greater if curve A moves up and/or curve C moves down on the p-V diagram.
What does the area enclosed by the cycle represent on a p-V diagram multiple choice?
Transcribed image text: What does the area enclosed by the cycle represent on a P-V diagram? Multiple Choice It represents
the heat rejected by the engine.
… It represents the efficiency of the engine. It represents the work done in the expansion process.
What does the area enclosed by the cycle represent on a p-V diagram how about on a T-s diagram select two answers?
The area enclosed by the cycle on the T-S diagram of reversed Carnot cycle shows
the net heat input which in turn equal to net work input
.
What does the area under the curve on a p-V diagram represent?
As described on the work slide, the area under a process curve on a p-V diagram is
equal to the work performed by a gas during the process
. … The area under a process curve on a T-s diagram is related to the amount of heat transferred to the gas.
In a cyclic process, the system starts and returns to the same thermodynamic state.
The net work involved
is the enclosed area on the P-V diagram. If the cycle goes clockwise, the system does work. … If the cycle goes counterclockwise, work is done on the system every cycle.
Is Carnot cycle a power cycle?
The Carnot cycle is
the most efficient power cycle
and it is composed of four totally reversible processes: … Process 4-1, isentropic compression (work in): the air compresses isentropically to the high pressure and temperature.
What is the equation of state for adiabatic process?
The adiabatic equation of state for an ideal gas is given
by1 Tγp(1−γ) = K where K is a constant
.
How do you find the temperature of a PV diagram?
It depends on what is the equation of state for the physical system you are modeling in the P-V diagram. For example, the equation of state for an ideal gas is
PV = nRT
. So if your process has a fixed amount of the gas (constant number of moles, n) you can calculate the temperature T for every point in the P-V diagram.
What is entropy in the universe?
Energy disperses, and systems dissolve into chaos. The more disordered something is, the more entropic we consider it. In short, we can define entropy as
a measure of the disorder of the universe
, on both a macro and a microscopic level.
What is S in TS diagram?
A
temperature–entropy diagram
, or T–s diagram, is a thermodynamic diagram used in thermodynamics to visualize changes to temperature and specific entropy during a thermodynamic process or cycle as the graph of a curve.
What is constant temperature process explain with diagram?
Constant temperature processes are referred to as
isothermal processes
. There are a number of isothermal processes encountered in common usage. Boiling and condensing processes occur at constant temperature and are accompanied by a change of phase of the working fluid.
What is the area enclosed within a PV curve?
The area under the curve on a p-V diagram tells
us the work done during the process
. This can be found by adding up the areas of lots of thin rectangles, each of which corresponds to a constant (or very nearly constant) pressure.
Why is Carnot cycle not used?
In real engines, the heat transfers at a sudden change in temperature whereas in a Carnot engine,
the temperature remains constant
. In our day to day lives, reversible processes can’t be carried out and there is no such engine with 100 % efficiency. Thus, the Carnot cycle is practically not possible.
Is a Carnot cycle reversible?
The reversible Carnot cycle
provides an upper limit for the heat engine
. In the Carnot cycle, the greatest possible share of the heat produced by combustion is converted into work. The Carnot process consists of two isothermal and two isentropic steps.
What are the stages of Carnot cycle?
The four stages in the Carnot cycle. (A)
Stage 1: Isothermal expansion under heat input
Q
1
, (B) Stage 2: Adiabatic expansion accompanied by a fall in temperature T
1
to T
2
, (C) Stage 3: Isothermal compression, Q
2
exhausted, (D) Stage 4: Adiabatic compression accompanied by an increase in temperature T
2
to T
1
.
