What is the total work done in cyclic process?

Hence, the work done by the system in a cyclic transformation is equal to the heat absorbed by the system. The net work involved in a cyclic process is the area enclosed in a P-V diagram. If the cycle goes clockwise, the system does work. If the cycle goes anticlockwise, then the work is done on the system every cycle.

Why is work done in a cyclic process not zero?

Because the process is cyclic, there is no change in internal energy after each cycle. Therefore the net work done in each cycle equals the heat added to the system.

In which process the work done is zero?

Isochoric process
Isochoric process: It is a thermodynamic process which takes place at constant volume. In such a process, the work done is zero.

Is work done is maximum in cyclic process?

The cyclic process is the process which has the same initial and the final state of the system. So, the energy of the system in its initial and final position is the same. So, the internal energy of the system is zero. Thus, work done is zero.

When work is done on the system during a process then?

In defining work, we focus on the effects that the system (e.g. an engine) has on its surroundings. Thus we define work as being positive when the system does work on the surroundings (energy leaves the system). If work is done on the system (energy added to the system), the work is negative.

Is Q zero for a cyclic process?

Solution. The change in energy in a cyclic process is zero, since the initial and final states are the same. The work done and the quantity of heat gained in such a process are therefore the same with opposite signs (R = –Q).

How much will be the value of work done in a closed path?

If the work done by a particular force is the same for all paths connecting A and B, the force is conservative. Equivalently, a force is conservative if the work equals zero for all closed paths (such as A → C → B → D → A). But this is nothing more than Eq. 8.1—the work done in a closed path equals zero.

In which process work done is maximum?

The work done in adiabatic process is maximum. This is because the rate of pressure increase is faster in the adiabatic process as all the energy of the work done on the system increases its internal energy.

Why is work done in a cyclic process positive?

In Figure 21.16c the net work done by the system is positive because the pressure during expansion is greater than the pressure during compression. Note that the cyclic process in Figure 21.16c generates a clockwise path on the P – V diagram. A clockwise path on a P – V diagram always corresponds to positive work.