Advertisements
Advertisements
प्रश्न
Explain thermodynamics of the adiabatic process.
Advertisements
उत्तर
- An adiabatic process is a process during which there is no transfer of heat from or to the system.
- For adiabatic change, Q = 0.
∴ ΔU + W = 0
∴ ΔU = –W - This implies, for adiabatic expansion, W is positive and ΔU is negative i.e. when work is done by the system adiabatically its internal energy decreases.
- Similarly, when a system is compressed adiabatically, W is negative and ΔU is positive i.e., the internal energy of the system increases in an adiabatic compression.
- Heat transfer to and from the system is prevented by either perfectly insulating the system from its environment or by carrying out the change rapidly so that there is no time for any exchange of heat.
- The temperature of the system changes, i.e., ΔT ≠ 0
- Usually, it is a sudden change and the system does not find any time to exchange heat with its environment.
- p-V diagram for the adiabatic process is as shown below:
APPEARS IN
संबंधित प्रश्न
A thermodynamic system is taken from an original state to an intermediate state by the linear process shown in Figure
Its volume is then reduced to the original value from E to F by an isobaric process. Calculate the total work done by the gas from D to E to F
Answer in brief.
Why should a Carnot cycle have two isothermal two adiabatic processes?
For work done to be reversible, the process should be ______
What is a thermodynamic process?
3 mole of a gas at temperature 400 K expands isothermally from an initial volume of 4 litres to a final volume of 8 litres. Find the work done by the gas. (R = 8.31 J mol-1 K-1)
Explain graphically (i) positive work with varying pressure, (ii) negative work with varying pressure, and (iii) positive work at constant pressure.
Explain the thermodynamics of the isobaric process.
Explain the thermodynamics of the isochoric process.
When a cycle tyre suddenly bursts, the air inside the tyre expands. This process is ____________.
In an isochoric process, we have ____________.
Give the equation of state for an isothermal process.
Apply first law for an isothermal process.
Draw the PV diagram for the isothermal process.
Draw the PV diagram for the isochoric process.
Can the given heat energy be completely converted to work in a cyclic process? If not, when can the heat can completely converted to work?
Explain in detail the isochoric process.
An ideal gas is taken in a cyclic process as shown in the figure. Calculate
- work done by the gas
- work done on the gas
- Net work done in the process
A thermodynamic system undergoes cyclic process ABCDA as shown in the figure. The work done by the system is ______
An ideal gas A and a real gas B have their volumes increased from V to 2V under isothermal conditions. The increase in internal energy ____________.
For an isothermal expansion of a perfect gas, the value of `(Delta "P")/"P"` is equal to ____________.
In an isothermal process, the volume of an ideal gas is halved. One can say that ____________.
An ideal gas is compressed to half its initial volume by means of several processes. Which of the process results in the maximum work done on the gas?
Give any two types of a thermodynamic process.
In the figure shown here, the work done in the process ACBA is ______.
Explain the thermodynamic process.
An ideal gas is taken through a cyclic process ABCDA as shown in figure. The net work done by the gas during the cycle is ______.
