Plz help explain these questions 9) b 12) c 13) c 15) g 9.15 points] One of the

Question

Plz help explain these questions
9) b 12) c 13) c 15) g 9.15 points] One of the important values obtained from Carnot Cycle is an efficiency of the cycle. The efficiency can be calculated by knowing only two edge temperatures of the cycle, Thot and Tcold Which one should give the highest efficiency? Thot = 0 °C Thor = 150 °C Thot = 550 °C Thot=100°C Thot = 50 °C Teold-ooC The efficiency is always 1 for any temperature combinations. Tcold =-100 °C Tcold-35 °C Tcold = 475 °C Tcold=99°C c. d. e. g.

Explanation / Answer

Ans 5

Carnot efficiency = (1 - Tc/Th) *100

Part a

Carnot efficiency = [1 - (0+273)K/(0+273)K] *100 = 0%

Part b

Carnot efficiency = [1 - (-100+273)K/(0+273)K] *100 = 36.63%

Part C

Carnot efficiency = [1 - (35+273)K/(150+273)K] *100

= 27.18%

Part d

Carnot efficiency = [1 - (475+273)K/(550+273)K] *100

= 9.11%

Part e

Carnot efficiency = [1 - (99+273)K/(100+273)K] *100

= 0.27%

Part F

Carnot efficiency = [1 - (0+273)K/(50+273)K] *100

= 15.48%

Part g

From the above temperature ranges, efficiency is not always 1 for any temperature range.

Option B is the correct answer because it has the highest efficiency for the given temperature range

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