Advertisements
Advertisements
प्रश्न
Explain the cyclic process.
Explain cyclic process with the help of neat and labelled p-V diagram.
Advertisements
उत्तर
- A thermodynamic process that returns a system to its initial state is cyclic.
- In this process, the initial and the final states are the same.
- For a cyclic process, the total change in the internal energy of a system is zero. (ΔU = 0).
- According to the first law of thermodynamics, we have, for a cyclic process, Q = W
- The given figure shows the p-V diagram of a cyclic process, which is a closed loop.
p-V diagram of cyclic process - Working of all heat engines is a cyclic process.
APPEARS IN
संबंधित प्रश्न
Explain why The climate of a harbour town is more temperate than that of a town in a desert at the same latitude.
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
An ideal gas is taken through an isothermal process. If it does 2000 J of work on its environment, how much heat is added to it?
For work done to be reversible, the process should be ______
Draw a p-V diagram showing positive work with varying pressure.
Write a note on free expansion.
Explain work done during a thermodynamic process.
When food is cooked in a vessel by keeping the lid closed, after some time the steam pushes the lid outward. By considering the steam as a thermodynamic system, then in the cooking process
Apply first law for an adiabatic process.
Give the equation of state for an adiabatic process.
Draw the PV diagram for the adiabatic process.
Explain in detail the isothermal process.
Derive the work done in an adiabatic process.
Explain the isobaric process and derive the work done in this process.
In an adiabatic expansion of the air, the volume is increased by 4%, what is the percentage change in pressure? (For air γ = 1.4)
In a petrol engine, (internal combustion engine) air at atmospheric pressure and temperature of 20°C is compressed in the cylinder by the piston to `1/8` of its original volume. Calculate the temperature of the compressed air. (For air γ = 1.4)
Consider the following cyclic process consist of isotherm, isochoric and isobar which is given in the figure.
Draw the same cyclic process qualitatively in the V-T diagram where T is taken along the x-direction and V is taken along the y-direction. Analyze the nature of heat exchange in each 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
For a given ideal gas 6 × 105 J heat energy is supplied and the volume of gas is increased from 4 m3 to 6 m3 at atmospheric pressure. Calculate
- the work done by the gas
- change in internal energy of the gas
- graph this process in PV and TV diagram
A thermodynamic system undergoes cyclic process ABCDA as shown in the figure. The work done by the system is ______
A monoatomic gas of pressure p having volume V expands isothermally to a volume 2V and then adiabatically to a volume 16V. The final pressure of the gas is ____________.
`("ratio of specific heats" = 5/3)`
In which of the following processes, beat is neither absorbed nor released by a system?
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?
Ideal gas for which 'ϒ' = 1.5 is suddenly compressed to `1/4`th of its initial volume. The ratio of 4 the final pressure to the initial pressure is ______.
`(ϒ = "C"_"p"/"C"_"v")`
In a certain thermodynamical process, the pressure of a gas depends on its volume as kV3. The work done when the temperature changes from 100°C to 300°C will be ______ nR, where n denotes number of moles of a gas.
Explain how can a gas be expanded at constant temperature.
