Advertisements
Advertisements
Question
Can the given heat energy be completely converted to work in a cyclic process? If not, when can the heat can completely converted to work?
Advertisements
Solution
According to the first law of thermodynamics, work can be completely converted into heat. Since the system comes back to the initial stage, the change in the internal energy is zero. In the cyclic process, heat can flow into the system and heat flows out of the system. The net heat transferred to the system is equal to the work done by the gas.
Qnet = Qin = Qout = W (for 3 Cyclic Process)
APPEARS IN
RELATED QUESTIONS
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
Explain thermodynamics of the adiabatic process.
Apply first law for an isobaric process.
Explain in detail the isothermal process.
Two identical samples of a gas are allowed to expand (i) isothermally (ii) adiabatically. Work done is ____________.
The work done on the system in changing the state of a gas adiabatically from equilibrium state A to equilibrium state B is 22.4 J. If the gas is taken from state A to B through another process in which the net heat absorbed by the system is 15.5 cal, then the net work done by the system in the latter case is ______.
( l cal = 4.2 J)
Explain the thermodynamic process.
An ideal gas is taken through a cyclic process ABCDA as shown in figure. The net work done by the gas during the cycle is ______.

Explain how can a gas be expanded at constant temperature.
In a cyclic process, if ΔU = internal energy, W = work done, Q = Heat supplied then ______.
