Question

A Carnot cycle has the reversible processes in the following order

• A. isothermal expansion, adiabatic expansion, isothermal compression and adiabatic compression
• B. isothermal compression, adiabatic expansion, isothermal expansion and adiabatic compression
• C. isothermal expansion, adiabatic compression, isothermal compression and adiabatic expansion
• D. adiabatic expansion, isothermal expansion, adiabatic compression and isothermal compression

Answer 1

Answer: (A)

As the Carnot engine works, the working substance of the engine undergoes a cycle known as Carnot cycle.
The Carnot cycle consists of the following four strokes
(i) First stroke (isothermal expansion)
(ii) Second stroke (adiabatic expansion)
(iii) Third stroke (isothermal compression)
(iv) Fourth stroke (adiabatic compression)