With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost________________?
Correct answer: B. Decreases
- A. Increases
- B. Decreases
- C. Remains unchanged
- D. Increases exponentially
Explanation
Increasing the orifice-to-pipe diameter ratio reduces the vena-contracta effect and improves pressure recovery downstream. Thus, a smaller fraction of the measured pressure differential is permanently lost.
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