All real engines are less efficient than the Carnot engine ...

[jenna1]

All real engines are less efficient than the Carnot engine because
 a. they do not operate through the Otto cycle. b. they do not operate through a reversible cycle. c. the working substance does not maintain a constant volume through the cycle. d. the working substance does not maintain a constant pressure through the cycle. e. the working substance does not maintain a constant temperature through the cycle.

Question 2

A Carnot cycle, operating as a heat engine, consists, in the order given, of
 a. an isothermal expansion, an isothermal compression, an adiabatic expansion and an adiabatic compression.
  b. an adiabatic expansion, an adiabatic compression, an isothermal expansion and an isothermal compression.
  c. an isothermal expansion, an adiabatic compression, an isothermal compression and an adiabatic expansion.
  d. an adiabatic compression, an isothermal compression, an isothermal expansion and an adiabatic expansion.
  e. an isothermal expansion, an adiabatic expansion, an isothermal compression and an adiabatic compression.

[dellikani2015]

Answer to Question 1

B

Answer to Question 2

E

[jenna1]

Gracias!

[atrochim]

Excellent