Which of the following power systems are limited by the 2nd

Which of the following power systems are limited by the 2^nd Law of Thermodynamics, i.e., the Carnot efficiency? (You may want to google some of these to understand how they work.) Coal-fired steam power plant Nuclear reactor steam power plant Hydroelectric power plant Solar photovoltaic system Turbojet aircraft engine Internal combustion automobile engine Hydrogen fuel cell

Solution

Answer. Each and every power systems are given in the list are limited by 2nd law of thermodynamics. As it states \'Entropy of an isolated system always increases over time and remain constant for ideal cases where the sytem is in steady state or undergoing a reversible process\'.