Practice Choked Flow, Subsonic And Supersonic Flows (4)

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is choked flow?
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Think of the speed of sound.
Question 2.
Does increasing downstream pressure affect mass flow rate in choked flow?
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Remember what happens at Mach 1.
3Question 3.
What characterizes choked flow?
- Maximum velocity at the throat
- Mach number greater than 1
- Reaching Mach 1
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Focus on the definition of choked flow.
4Question 4.
True or False: In subsonic flow, velocity decreases as the area of the nozzle decreases.
- True
- False
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Review the concepts of fluid dynamics.
Question 5.
A nozzle operating in choked flow conditions has a throat area of 0.02 m² and upstream conditions of 300 K and 200 kPa. Calculate the mass flow rate.
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Use the ideal gas law and the fact that the flow is at Mach 1.
Question 6.
Evaluate the design of a supersonic nozzle and how it could switch to subsonic operation. Discuss the implications of such a design change.
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Think about variable geometry nozzles and their applications in aerospace.

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