MJ of work on a heat transfer of 5.00 MJ into Quiz
The question sheet
Reveal any answer as you study-
A heat engine does 10.0 kJ of work and 8.50 kJ of heat transfers to the environment. What is the heat transfer into the engine?
- 1.50 kJ
- 10.0 kJ
- 8.50 kJ
- 18.5 kJ
Reveal answer
Answer: 18.5 kJ
Source evidence
PDF page 730: 20. A certain heat engine does 10.0 kJ of work and
PDF page 730: 8.50 kJ of heat transfer occurs to the environment in a cyclical process. (a) What was the heat transfer into this engine? (b) What was the engine’s efficiency?
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In problem 20, the process described for the heat engine is characterized as what type?
- Adiabatic
- Isothermal
- Isobaric
- Cyclical
Reveal answer
Answer: Cyclical
Source evidence
PDF page 730: 20. A certain heat engine does 10.0 kJ of work and
PDF page 730: 8.50 kJ of heat transfer occurs to the environment in a cyclical process. (a) What was the heat transfer into this engine? (b) What was the engine’s efficiency?
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For the engine in problem 20, what two quantities are used to find its efficiency?
- Heat in and work output
- Temperature and pressure
- Work and heat out to environment
- Volume and mass
Reveal answer
Answer: Heat in and work output
Source evidence
PDF page 730: 20. A certain heat engine does 10.0 kJ of work and
PDF page 730: 8.50 kJ of heat transfer occurs to the environment in a cyclical process. (a) What was the heat transfer into this engine? (b) What was the engine’s efficiency?
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What efficiency is stated for the cyclical heat engine in problem 22?
- 5.00%
- 34.0%
- 22.0%
- 42.0%
Reveal answer
Answer: 22.0%
Source evidence
PDF page 730: 22. (a) What is the work output of a cyclical heat
PDF page 730: engine having a 22.0% efficiency and
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In problem 23, how much heat transfers to the environment for every 95.0 kJ into the engine?
- 100 kJ
- 95.0 kJ
- 20.0 kJ
- 75.0 kJ
Reveal answer
Answer: 75.0 kJ
Source evidence
PDF page 730: in which 75.0 kJ of heat transfer occurs to the environment for every 95.0 kJ of heat transfer into the engine? (b) How much work does it produce for 100 kJ of heat transfer into the engine?
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In problem 23, part (b) asks about work produced for how much heat transfer into the engine?
- 100 kJ
- 75.0 kJ
- 95.0 kJ
- 10.0 kJ
Reveal answer
Answer: 100 kJ
Source evidence
PDF page 730: in which 75.0 kJ of heat transfer occurs to the environment for every 95.0 kJ of heat transfer into the engine? (b) How much work does it produce for 100 kJ of heat transfer into the engine?
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What efficiency does the electrical power station in problem 25 operate at?
- 34.0%
- 42.0%
- 36%
- 5.00%
Reveal answer
Answer: 42.0%
Source evidence
PDF page 730: environment by an electrical power station that uses of heat transfer into the engine
PDF page 730: with an efficiency of 42.0%? (b) What is the ratio of heat transfer to the environment to work output? (c) How much work is done?
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Problem 25 part (b) asks for the ratio of what two quantities?
- Work to heat in
- Temperature to efficiency
- Heat to environment to work output
- Heat in to heat out
Reveal answer
Answer: Heat to environment to work output
Source evidence
PDF page 730: with an efficiency of 42.0%? (b) What is the ratio of heat transfer to the environment to work output? (c) How much work is done?
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In the upgrade problem, what was the power station's efficiency prior to the upgrade?
- 42.0%
- 34.0%
- 40.0%
- 36%
Reveal answer
Answer: 36%
Source evidence
PDF page 730: power plant were upgraded, resulting in an improvement in efficiency of 3.32%. Assume that prior to the upgrade the power station had an efficiency of 36% and that the heat transfer into the engine in one day is still the same at . (a) How much more electrical
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By how much did efficiency improve after the power plant was upgraded?
- 5.00%
- 36%
- 22.0%
- 3.32%
Reveal answer
Answer: 3.32%
Source evidence
PDF page 730: power plant were upgraded, resulting in an improvement in efficiency of 3.32%. Assume that prior to the upgrade the power station had an efficiency of 36% and that the heat transfer into the engine in one day is still the same at . (a) How much more electrical
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After the upgrade, part (a) asks how much more of what is produced?
- Fuel
- Water
- Electrical energy
- Heat to environment
Reveal answer
Answer: Electrical energy
Source evidence
PDF page 730: power plant were upgraded, resulting in an improvement in efficiency of 3.32%. Assume that prior to the upgrade the power station had an efficiency of 36% and that the heat transfer into the engine in one day is still the same at . (a) How much more electrical
PDF page 730: energy is produced due to the upgrade? (b) How much less heat transfer occurs to the environment due to the upgrade?
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The nuclear power station comparison uses one with normal efficiency of what value?
- 42.0%
- 40.0%
- 36%
- 34.0%
Reveal answer
Answer: 34.0%
Source evidence
PDF page 730: types of nuclear power stations—one with the normal efficiency of 34.0%, and another with an improved efficiency of 40.0%. Suppose both have the same heat transfer into the engine in one day, . (a) How much more electrical
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