Speed of efflux can be determined by applying______________?
Correct answer: B. Torricelli's theorem
- A. Bernoulli's theorem
- B. Torricelli's theorem
- C. Venture relation
- D. All
Explanation
Torricelli's theorem gives the efflux speed from an opening as v = √(2gh), derived by applying Bernoulli's equation to the fluid surface and the hole. Students may choose Bernoulli's theorem because it is the underlying derivation, but the named result for efflux speed is Torricelli's theorem.
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About Bernoulli's Equation
Bernoulli’s equation applies conservation of energy to steady flow of an incompressible, non-viscous fluid along a streamline: pressure, kinetic and gravitational terms have a constant total. It explains pressure-speed changes in narrow pipes, Venturi meters and lift, and differs from continuity because it relates pressure as well as velocity and height.
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