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In which of the following conditions divergent nozzle is used?
40. In which of the following conditions divergent nozzle is used?
- Backpressure >= critical pressure ratio
- Backpressure = critical pressure ratio
- Backpressure < critical pressure ratio
- None of the above
Answer: C) Backpressure < critical pressure ratio.
Explanation:
Divergent nozzle is utilized in a situation when back pressure is less than the critical pressure ratio. When the backpressure is less than the critical pressure ratio, the flow through the diverging nozzle can expand to supersonic speeds, enhancing thrust or flow efficiency in certain applications.