What is heat engine ?

What is a heat engine ? Explain its working principle . Define its efficiency.

What is Camot engine?

What are heat engines?

What is an ideal heat engine?

A scientist says that the efficiency of his heat engine which operates at source temperature 127^(@)C and sink temperature 27^(@)C is 26% , then

Classify heat engine based on working substance.

Explain heat engine cycle with help of p-V diagram?

200cal of heat is given to a heat engine so that it rejects 150 cal of heat, if source temperature is 400 K then the sink temperature is

When the absolute temperature of the source of a Carnot heat engine is increased by 25 %, its efficiency increases by 80%. The new efficiency of the engine is

The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is