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Which one of the following is NOT a necessary assumption for the air-standard Otto cycle?
  • a)
    All processes are both internally as well as externally reversible
  • b)
    Intake and exhaust processes are constant volume heat rejection processes
  • c)
    The combustion process is a constant volume heat addition process
  • d)
    The working fluid is an ideal gas with constant specific heats
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which one of the following is NOT a necessary assumption for the air-...
Air-standard cycle, which is based on the following assumptions
i) The working medium is assumed to be a perfect gas and follows the relation pV = mRT or p = ρRT
ii) There is no change in the mass of the working medium
iii) All the processes that constitute the cycle are reversible
iv) Heat is assumed to be supplied from a constant high-temperature source and not from chemical reactions during the cycle
v) The working medium has constant specific heats throughout the cycle
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Most Upvoted Answer
Which one of the following is NOT a necessary assumption for the air-...
Assumptions of Air-Standard Otto Cycle:

The air-standard Otto cycle is a theoretical cycle that models the behavior of a gasoline engine. The following are the assumptions of the air-standard Otto cycle:

1. The working fluid is an ideal gas with constant specific heats: This means that the gas behaves in a particular way, and its properties are constant, which is essential for the calculation of heat transfer and work.

2. All processes are both internally as well as externally reversible: This means that the process is done in such a way that there is no entropy generation, and the process can be reversed without any change in the system or surroundings.

3. The combustion process is a constant volume heat addition process: This means that the fuel is burned at a constant volume, and the heat is added to the gas.

4. Heat rejection process is a constant volume process: This means that the heat is rejected at a constant volume.

Not a necessary assumption for the air-standard Otto cycle:

Intake and exhaust processes are constant volume heat rejection processes: It is not necessary for the intake and exhaust processes to be constant volume heat rejection processes. These processes can be constant pressure or isentropic processes.
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Which one of the following is NOT a necessary assumption for the air-standard Otto cycle?a)All processes are both internally as well as externally reversibleb)Intake and exhaust processes are constant volume heat rejection processesc)The combustion process is a constant volume heat addition processd)The working fluid is an ideal gas with constant specific heatsCorrect answer is option 'B'. Can you explain this answer?
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Which one of the following is NOT a necessary assumption for the air-standard Otto cycle?a)All processes are both internally as well as externally reversibleb)Intake and exhaust processes are constant volume heat rejection processesc)The combustion process is a constant volume heat addition processd)The working fluid is an ideal gas with constant specific heatsCorrect answer is option 'B'. Can you explain this answer? for SSC 2024 is part of SSC preparation. The Question and answers have been prepared according to the SSC exam syllabus. Information about Which one of the following is NOT a necessary assumption for the air-standard Otto cycle?a)All processes are both internally as well as externally reversibleb)Intake and exhaust processes are constant volume heat rejection processesc)The combustion process is a constant volume heat addition processd)The working fluid is an ideal gas with constant specific heatsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for SSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following is NOT a necessary assumption for the air-standard Otto cycle?a)All processes are both internally as well as externally reversibleb)Intake and exhaust processes are constant volume heat rejection processesc)The combustion process is a constant volume heat addition processd)The working fluid is an ideal gas with constant specific heatsCorrect answer is option 'B'. Can you explain this answer?.
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