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d) Is that possible? e) Draw a heat engine diagram of a perpetual motion machine. f) Is it possible to build a perpetual motion machine?

d) Is that possible? e) Draw a heat engine diagram of a perpetual motion machine. f) Is it possible to build a perpetual motion machine?

Automotive Technology: A Systems Approach (MindTap Course List)
Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Jack Erjavec, Rob Thompson
Chapter3: Basic Theories And Math
Section: Chapter Questions
Problem 2RQ: In what four states does matter exist? Cite examples of each.
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Need help with D,E and F. This is all the information I was given. If needed it would be looked up online
Experiment 3: Efficiency. a) What is the typical efficiency of a car? b) What is the maximum possible efficiency (Carnot efficiency) if the heat in the car's engine reaches 500 C and the exhaust is expelled at 50 C? c) What must happen in order to reach 100% efficiency with a car engine? d) Is that possible? e) Draw a heat engine diagram of a perpetual motion machine. f) Is it possible to build a perpetual motion machine?
Transcribed Image Text:Experiment 3: Efficiency. a) What is the typical efficiency of a car? b) What is the maximum possible efficiency (Carnot efficiency) if the heat in the car's engine reaches 500 C and the exhaust is expelled at 50 C? c) What must happen in order to reach 100% efficiency with a car engine? d) Is that possible? e) Draw a heat engine diagram of a perpetual motion machine. f) Is it possible to build a perpetual motion machine?
Note :- Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and specify the other subparts (up to 3) you'd like answered. Given data, Temperature of the source i.e. temperature of the engine = 500°C Temperature of the sink i.e. temperature of exhaust = 50°C Step 2 Formula used to solve the problem : Efficiency of Carnot engine is given by as following:- n=1 - ...(1) where, T=temperature of the source T2=temperature of sin k Step 3 PART (a) : Efficiency of modern cars :- In today's modern world gasoline engine cars have efficiency up-to 50%, while normal budget cars engine have efficiency in a range of 20% - 40%. Where, efficiency refers, how much total fuel energy converted into work by the engine of the car. PART (b) : Efficiency of the given car's engine is : Using (1) n=1 - + where, T=500°C = 773 K T2=50°C = 323 K theref ore, n=1 – =0. 58 =58% Answer : Therefore, efficiency of the given car's engine is 58%. Step 4 PART (c) : To gain 100% efficiency all the heat must be converted into heat by the engine of the car. But in the real world it is not possible at all, because the parts of engine have some friction and due to that heat will be produced which leads to prohibit 100% efficiency. Answer : To gain 100% efficiency all the heat must be converted into heat by the engine of the car.
Transcribed Image Text:Note :- Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and specify the other subparts (up to 3) you'd like answered. Given data, Temperature of the source i.e. temperature of the engine = 500°C Temperature of the sink i.e. temperature of exhaust = 50°C Step 2 Formula used to solve the problem : Efficiency of Carnot engine is given by as following:- n=1 - ...(1) where, T=temperature of the source T2=temperature of sin k Step 3 PART (a) : Efficiency of modern cars :- In today's modern world gasoline engine cars have efficiency up-to 50%, while normal budget cars engine have efficiency in a range of 20% - 40%. Where, efficiency refers, how much total fuel energy converted into work by the engine of the car. PART (b) : Efficiency of the given car's engine is : Using (1) n=1 - + where, T=500°C = 773 K T2=50°C = 323 K theref ore, n=1 – =0. 58 =58% Answer : Therefore, efficiency of the given car's engine is 58%. Step 4 PART (c) : To gain 100% efficiency all the heat must be converted into heat by the engine of the car. But in the real world it is not possible at all, because the parts of engine have some friction and due to that heat will be produced which leads to prohibit 100% efficiency. Answer : To gain 100% efficiency all the heat must be converted into heat by the engine of the car.
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