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Assertion (A): In a supersonic nozzle, with sonic condition at the throat, any reduction of down stream pressure will not be felt at the inlet of the nozzle. 
Reason (R): The disturbance caused downstream of supersonic flowstravels at sonic velocity which cannot propagate upstream by Machcone.
  • a)
    Both A and R are individually true and R is the correct explanation of A
  • b)
    Both A and R are individually true but R is not the correct explanation of A
  • c)
    A is true but R is false
  • d)
    A is false but R is true
Correct answer is option 'A'. Can you explain this answer?
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Assertion (A): In a supersonic nozzle, with sonic condition at the thr...
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Assertion (A): In a supersonic nozzle, with sonic condition at the thr...
Explanation:

Supersonic Nozzle Operation:
- In a supersonic nozzle, the flow accelerates to supersonic speeds at the throat, where it reaches sonic conditions.
- Downstream of the throat, the flow remains supersonic.

Assertion (A) Explanation:
- When the flow is at sonic conditions at the throat, any reduction in downstream pressure will not affect the flow at the inlet of the nozzle.
- This is because the disturbance caused downstream of supersonic flows travels at the speed of sound, which is the sonic velocity.
- This disturbance in the flow field cannot propagate upstream due to the Mach cone that forms at the throat of the nozzle.

Reason (R) Explanation:
- The reason provided correctly explains why any reduction in downstream pressure will not be felt at the inlet of the nozzle.
- The disturbance in the flow field travels at the sonic velocity, which is the maximum speed at which disturbances can propagate in the flow.
- This limitation prevents the disturbance from reaching the inlet of the nozzle and affecting the flow conditions there.
Therefore, both Assertion (A) and Reason (R) are individually true, and Reason (R) is the correct explanation of Assertion (A).
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Assertion (A): In a supersonic nozzle, with sonic condition at the throat, any reduction of down stream pressure will not be felt at the inlet of the nozzle.Reason (R): The disturbance caused downstream of supersonic flowstravels at sonic velocity which cannot propagate upstream by Machcone.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?
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Assertion (A): In a supersonic nozzle, with sonic condition at the throat, any reduction of down stream pressure will not be felt at the inlet of the nozzle.Reason (R): The disturbance caused downstream of supersonic flowstravels at sonic velocity which cannot propagate upstream by Machcone.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Assertion (A): In a supersonic nozzle, with sonic condition at the throat, any reduction of down stream pressure will not be felt at the inlet of the nozzle.Reason (R): The disturbance caused downstream of supersonic flowstravels at sonic velocity which cannot propagate upstream by Machcone.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): In a supersonic nozzle, with sonic condition at the throat, any reduction of down stream pressure will not be felt at the inlet of the nozzle.Reason (R): The disturbance caused downstream of supersonic flowstravels at sonic velocity which cannot propagate upstream by Machcone.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?.
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