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← HistoryWhich outcome occurs when a Roman aqueduct siphon's discharge elevation is significantly higher than its intake elevation?
A)Increased flow rate due to gravity
B)Structural failure from pressure stress✓
C)Sediment accumulation at the apex
D)Reduced flow rate due to pipe collapse
💡 Explanation
When discharge elevation exceeds intake, the hydrostatic pressure within the inverted siphon increases greatly to overcome the gravitational head, creating extreme circumferential stress because of the water column's weight. Therefore structural failure is more likely, rather than rate increase, sediment issues, or collapse, which are related to other hydraulic conditions.
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