Coefficient of contraction for an orifice Define the coefficient of contraction Cc for a sharp-edged orifice in terms of areas. Choose the correct ratio.
Mechanical Engineering
Hydraulics and Fluid Mechanics
Difficulty: Easy
Choose an option
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Aactual velocity of jet at vena contracta to the theoretical velocity
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Bloss of head in the orifice to the available head
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Cactual discharge through an orifice to the theoretical discharge
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Darea of jet at vena contracta to the area of orifice
Answer
Correct Answer: area of jet at vena contracta to the area of orifice
Explanation
DefinitionsCc = Avc / Ao (contraction)Cv = Vactual / Vtheoretical (velocity)Cd = Qactual / Qtheoretical = Cc Cv (discharge)
Final Answerarea of jet at vena contracta to the area of orifice