Which of the following cycles is not a reversible cycle_____________________?

A. its heating value
B. kinetic energy of molecules
C. repulsion of molecules
D. attraction of molecules
E. surface tension of molecules

A. gas engine
B. well lubricated engine
C. petrol engine
D. steam engine
E. reversible engine

A. temperature
B. enthalpy
C. internal energy
D. entropy
E. all of the above

A. zeroth low of thermodynamic
B. first law of thermodynamics
C. second law to thermodynamics
D. basic law of thermodynamics
E. claussius statement

A. Otto cycle is more efficient than Diesel cycle
B. Diesel cycle is more efficient than Otto cycle
C. efficiency depends on other factors
D. both Otto and Diesel cycles are equally efficient
E. none of the above

A. two isothermals and two isentropics
B. two isentropics and two constant volumes
C. two isentropics, one constant volume and one constant pressure
D. two isentropics and two constant pres-sures
E. none of the above