HomeEngineeringIn an external or internal mouthpiece, the absolute pressure head at vena contracta is zero when atmospheric pressure head is 10.3 m of water. 11781. In an external or internal mouthpiece, the absolute pressure head at vena contracta is zero when atmospheric pressure head is 10.3 m of water.By Admin / September 8, 2025 Correct Incorrect ✅ The correct answer is option A.
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