Question

what is carnot cycle

Answer 1

A cornot cycle consists of the following four processes
1) A reversible isothermal expansion of the gas at the 'hot' temperature T1
2) isentropic expansion of the gas
3) Is reversible isothermal compression of the gas at the 'cold' temperature T2
4) Isentropic compression of the gas

Answer 2

It has four basic reversible processes meaning that the cycle as whole reversible