Three engines operate between reservoirs separated in temperature ...

[Pineappleeh]

Three engines operate between reservoirs separated in temperature by 300 K. The reservoir temperatures are as follows:
   Engine A: Th 5 1 000 K, Tc 5 700 K
   Engine B: Th 5 800 K, Tc 5 500 K
   Engine C: Th 5 600 K, Tc 5 300 K
   Rank the engines in order of their theoretically possible efficiency, from highest to lowest.

  1.A, B, C
  2.B, C, A
  3.C, B, A
  4.C, A, B

Question 2

Identify path D in the figure as isobaric, isothermal, isovolumetric, or adiabatic.
 

[k2629]

Answer to Question 1

3

Answer to Question 2

1

[Pineappleeh]

Wow, this really help

[ryansturges]

Great answer, keep it coming