What is the adiabatic equation?
The normally used equation is the so-called adiabatic equation. For a given fault of I, which lasts for time t, the minimum required cable cross-sectional area is given by: A=√I2tk. where: A – the nominal cross-section area, mm2. I – the fault current in, A.
What is work done in adiabatic process?
When an ideal gas is compressed adiabatically (Q=0), work is done on it and its temperature increases; in an adiabatic expansion, the gas does work and its temperature drops.
Why adiabatic process is fast?
Another way to accomplish the adiabatic process in a system is to carry out the deformation (expansion/compression) that occurs during the process very rapidly so that there is an adequate time for a significant amount of heat to be transferred.
Is adiabatic or isothermal faster?
Adiabatic process is a process that does not change the entropy of the system. Hence NO, the Adiabatic process is never faster than the Isothermal process.
Is adiabatic process is fast?
An adiabatic quasistatic process is isentropic (by the definition of entropy), and we often use the two words interchangeably (because we usually consider quasistatic processes). Chemists may tell you that an adiabatic process is fast. Physicists will usually describe it as slow.
In which process work done is minimum?
The work done on a system in a reversible process is the minimum work we need to do to achieve that state change.
Which work is maximum isothermal or adiabatic?
Bottom line: The magnitude of the work for the isothermal process for both expansion and compression is greater than the magnitude of the work for the adiabatic process. Although the adiabatic compression work is less negative than the isothermal compression work, the amount of work depends only on its magnitude.
Are all reversible processes adiabatic?
2 Answers. The change in entropy for a system undergoing an adiabatic reversible path is zero. If the irreversible path is adiabatic, the reversible path will not be adiabatic.
Is isentropic process a reversible?
Taken from wikipedia: In thermodynamics, an isentropic process is an idealized thermodynamic process that is adiabatic and in which the work transfers of the system are frictionless; there is no transfer of matter and the process is reversible. An isentropic process is, by definition, adiabatic and reversible.
Why reversible process is not possible?
Having been reversed, it leaves no change in either the system or the surroundings. Since it would take an infinite amount of time for the reversible process to finish, perfectly reversible processes are impossible.
What is true for a free expansion process?
In free expansion there is no work done as there is no external external pressure. That’s certainly true, in fact free expansion is an irreversible process in which a gas expands into an insulated evacuated chamber, you can think of it like ann container with a piston and the gas is left to expand in vacuum.