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No. All processes involving heat transfer are not reversible, since they result in an increase in entropy. Isothermal expansion implies heat transfer to maintain the system at a constant temperature. Normally an expanding gas would cool if there were no heat entering the system. Adiabatic processes involve no heat transfer and are reversible. The temperature can (and usually does) change during an adiabatic process.
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Pv in flow conditions?
In flow conditions, the term "PV" typically refers to the product of pressure (P) and volume (V) in a system. This product remains constant for an ideal gas under isothermal conditions (Boyle's Law) and can help determine the behavior of the gas as it undergoes changes in pressure and volume.
How does the volume change in an isentropic process?
The entropy of an ideal gas during an isothermal process may change because normally the entropy is a net zero. The change of on isothermal process can produce positive energy.
What are advantages of reversible changes?
Reversible changes allow for the original substances to be recovered after the change is reversed, making them ideal for experiments and processes where the initial materials are valuable or limited. They also provide flexibility in adjusting the conditions of the change without causing permanent alterations. Additionally, reversible changes often involve minimal energy input compared to irreversible changes, making them more efficient in certain applications.
What happens to a population under ideal conditions?
Under ideal conditions, population increases.
What gas conforms to the gas laws at all conditions of temperature and pressure?
An ideal gas conforming to the ideal gas law (PV = nRT) would behave at all conditions of temperature and pressure. However, in reality, no gas perfectly conforms to the gas laws under all conditions.
What is the equation that relates the change in entropy (q) to the temperature (T), volume (V), and ideal gas constant (R) in a reversible isothermal process?
The equation that relates the change in entropy (S) to the temperature (T), volume (V), and ideal gas constant (R) in a reversible isothermal process is S q / T.
What is known as carnot heat engin?
carnot's heat heat engine is also known as ideal heat engine.because in carnot's the precess is reversible .Total heat converted into work . The efficiency is maximum for carnot's heat engine.
What are the condition for ideal fluid?
1.Isothermal expansion at a high temperature AB 2.Adiabatic expansion as the temperature falls to a lower rule BC 3.Isothermal compression at lower temperature CD 4.Adiabatic compression as temperature increase to initial high volume DA
What factors reduce the efficiency of heat engine from its ideal value?
This inefficiency can be attributed to three causes. There is an overall theoretical limit to the efficiency of any heat engine due to temperature, called the Carnot efficiency. Second, specific types of engines have lower limits on their efficiency due to the inherent irreversibility of the engine cycle they use. Thirdly, the non ideal behaviour of real engines, such as mechanical friction and losses in the combustion process causes further efficiency losses.OR· friction of moving parts· inefficient combustion· heat loss from the combustion chamber· departure of the working fluid from the thermodynamic properties of an ideal gas· aerodynamic drag of air moving through the engine· energy used by auxiliary equipment like oil and water pumps· inefficient compressors and turbines· imperfect valve timing
The value of polytropic exponent 'n' in the reversible polytropic process usually varies between?
The value of the polytropic exponent 'n' in a reversible polytropic process typically varies between 0 and ∞. However, common values for n are between 0 (isobaric process) and 1 (isothermal process) for ideal gases.
What is entrophy?
Entropy is:It is denoted by S.It is a state function and ΔS is independent of path.Entropy is a measure of the degree of randomness or disorder in a system.Greater the disorder of a system, the higher is the entropy. The decrease of regularity in structure means increase in entropy.Crystalline solid is the state of lowest entropy (most ordered) and the gaseous state is a state of highest entropy.As the temperature increases, randomness increases, and thus, entropy increases.For a reversible reaction, entropy change (ΔS)(for a reversible reaction)At equilibrium, ΔS = 0Entropy of a spontaneous reaction increases till it reaches the maximum, and at equilibrium, ΔS = 0Entropy is a state property. Therefore, entropy change for a reversible process is given byFor reversible and irreversible isothermal expansion of an ideal gas (that is under isothermal conditions), ΔU = 0. But is not zero for the irreversible process.Main definition are stated according to http://wiki.answers.com/Q/FAQ/8454.Thermodynamics is the study of energy conversion between heat and mechanical work which leads to the macroscopic properties such as temperature, volume, and...
Which thermodynamic process takes place at a constant temperature so that the internal energy of a system remains unchanged?
An isothermal process takes place at a constant temperature so that the internal energy of a system remains unchanged. For ideal gases, this usually occurs under conditions where heat exchange occurs with the surroundings to maintain a constant temperature.
Pv in flow conditions?
In flow conditions, the term "PV" typically refers to the product of pressure (P) and volume (V) in a system. This product remains constant for an ideal gas under isothermal conditions (Boyle's Law) and can help determine the behavior of the gas as it undergoes changes in pressure and volume.
What statement best describe the isothermal process?
An isothermal process is one where the temperature remains constant throughout. This means that the internal energy of the system stays the same, as the heat transfer into the system is balanced by the work done by the system. In an ideal gas, this results in no change in the pressure or volume during an isothermal process.
How does the volume change in an isentropic process?
The entropy of an ideal gas during an isothermal process may change because normally the entropy is a net zero. The change of on isothermal process can produce positive energy.
Why carnot cycle are consider as ideal reversible cycle?
carnot cycle is the highiest efficiency
What are advantages of reversible changes?
Reversible changes allow for the original substances to be recovered after the change is reversed, making them ideal for experiments and processes where the initial materials are valuable or limited. They also provide flexibility in adjusting the conditions of the change without causing permanent alterations. Additionally, reversible changes often involve minimal energy input compared to irreversible changes, making them more efficient in certain applications.
