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Which type of vortex is generated when fluid flows out of a small opening, such as a drain in a sink?
18. Which type of vortex is generated when fluid flows out of a small opening, such as a drain in a sink?
- Free vortex
- Forced vortex
- Rankine vortex
- Solid body rotation
Answer: A) Free vortex.
Explanation:
A free vortex is created when fluid flows out of a small opening, and the velocity of the fluid decreases with increasing radius while conserving angular momentum.