Question

In a heat engine, the ratio of net work done per cycle by the engine to the total amount of heat absorbed per cycle by the working substance from the source is known as

Answer 1

Heat engine

1. A heat engine is a machine that converts heat into mechanical energy, which may then be used to perform tasks.
2. It accomplishes this by decreasing a functioning substance's temperature from a higher state temperature.
3. Thermal energy is generated by a heat source, which raises the temperature of the working substance.
4. The working material generates work in the engine's working body while transferring heat to a colder sink until it cools to a low temperature.

Thermal efficiency

1. The ratio of work delivered by the engine to the amount of heat supplied to the engine is known as thermal efficiency for a heat engine.
2. Because some heat is lost while working, the figure for thermal efficiency is always less than 100 percent.

Hence, in a heat engine, the ratio of net work done per cycle by the engine to the total amount of heat absorbed per cycle by the working substance from the source is known as its Thermal Efficiency.