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प्रश्न
State the assumptions made for thermodynamic processes.
उत्तर
Assumptions made for studying various thermodynamic processes:
- The majority of the thermodynamic processes are reversible. That is, they are quasi-static in nature. They are extremely slow and the system undergoes an infinitesimal change at every stage except the adiabatic processes. The system is, therefore, in thermodynamic equilibrium during all the changes.
- The system involved in all the processes is an ideal gas enclosed in a cylinder having a movable, frictionless, and massless piston.
- The ideal gas equation is applicable to the system.
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?
What is a thermodynamic process?
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.
In an isochoric process, we have ____________.
Give an expression for work done in an isothermal process.
Draw the PV diagram for the adiabatic process.
What is a cyclic process?
Explain in detail the isothermal process.
Explain the isobaric process and derive the work done in this process.
Explain in detail the isochoric process.
What are the limitations of the first law of thermodynamics?
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)
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 is expanded isothermally from volume V1 to volume V2 and then compressed adiabatically to original volume V1. If the initial pressure is P1, the final pressure is P3 and net work done is W, then ____________.
An ideal gas is made to go from a state A to stale B in the given two different ways (see figure) (i) an isobaric and then an isochoric process and (ii) an isochoric and then an isobaric process. The work done by gas in the two processes are W1 and W2 respectively. Then,
Two identical samples of a gas are allowed to expand (i) isothermally (ii) adiabatically. Work done is ____________.
In which of the following processes, beat is neither absorbed nor released by a system?
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 ____________.
We consider a thermodynamic system. If `Delta"U"` represents the increase in its internal energy and W the work done by the system, which of the following statements is true?
Which of the following processes is reversible?
Explain the thermodynamic process.
