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WorksheetsQuiz Thermodynamics: Carnot Cycle
Total questions: 16
Worksheet time: 8mins
Step two in Carnot engine is
Isothermal expansion
Isothermal compression
Adiabatic expansion
Adiabatic compression
Find efficiency of Carnot engine working between steam and melting ice temperature
(a)
A Carnot engine function between two reservoir between 527 0C and 127 0C . Calculate the carnot efficiency for the engine.
50 %
60 %
65 %
75 %
80 %
During which stages of the Carnot Cycle is useful work extracted?
Stages 1 and 2 (isothermal expansion, and adiabatic expansion).
Stages 3 and 4 (isothermal contraction, and adiabatic contraction).
Stages 2 and 4 (adiabatic expansion, and adiabatic contraction).
Stages 1 and 4 (isothermal expansion, and adiabatic contraction).
Stages 1 and 3 (isothermal expansion, and isothermal contraction).
A carnot cycle is to be designed to attain efficiency of 0.75. if temperature of high temperature reservoir is 727ºC, then low temperature reservoir will have to be maintained at ___________
23ºC
181ºC
-23ºC
-181ºC
Name the processes involved in Carnot cycle.
What is the first step to find efficiency for Carnot
Find hg at P given in question
Find Ts at P given in question
Find P at T given in question
Find hf at T given in question
How to identify TH and TL?
TH = pressure with high value and TL= pressure with low value
TH = pressure with low value and TL= pressure with high value
TH = temperature with low value and TL= temperature with high value
TH = temperature with high value and TL= temperature with low value
How to convert Temperature in degree celsius to Kelvin
T+73
T-73
T+273
T-273
Which one is the formula to find efficiency for Carnot cycle?
After use the formula to find carnot efficiency, what is the last step to get the final answer?
answer x 100
answer x 75
answer x 50
answer x 25
A steam generator is operated at a boiler pressure of 30 bar and condenser pressure of 0.24 bar. What is TH and TL value for this question?
TH = 244.50C and TL= 70.3 0C
TH = 245.40C and TL= 80.2 0C
TH = 233.80C and TL= 64.1 0C
TH = 222.10C and TL= 55.7 0C
What is TH and TL value in Kelvin?
TH = 506.8 K and TL= 337.1
TH = 502.5 K and TL= 324.3
TH = 427.8 K and TL= 335.1
TH = 426.2 K and TL= 332.3
After substitute the value of TH and TL into the formula, choose the value that you got (4 decimal places)
0.2248
0.4448
0.5548
0.3348
So, what is the efficiency of the cycle?
34.48%
33.48%
32.48%
31.48%
What do you think about the step to find Carnot efficiency?
I don't understand at all
I do understand only some of step
I do understand most of step
I do understand at all
