Virtual Labs

1. Bernoulli's equation is applicable to which type of fluid flow?

a: Viscous and compressible fluids Explanation

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b: Ideal, incompressible, and steady fluids Explanation

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c: Turbulent and rotational fluids Explanation

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d: Non-ideal and unsteady fluids Explanation

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2. What does the term P/ρg represent in Bernoulli's equation?

a: Velocity head Explanation

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b: Pressure head Explanation

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c: Elevation head Explanation

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d: Total head Explanation

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3. Bernoulli's theorem is fundamentally based on the principle of conservation of:

a: Mass Explanation

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b: Momentum Explanation

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c: Energy Explanation

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d: Volume Explanation

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4. Which of the following assumptions is NOT made in the derivation of the ideal Bernoulli's equation?

a: The fluid is incompressible. Explanation

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b: The flow is steady. Explanation

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c: Viscous effects are significant. Explanation

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d: The flow is irrotational. Explanation

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5. According to Bernoulli's principle, if the velocity of a fluid increases in a horizontal pipe, what happens to its static pressure?

a: It increases. Explanation

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b: It decreases. Explanation

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c: It remains constant. Explanation

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d: It depends on the fluid's density. Explanation

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6. In a converging-diverging nozzle used for Bernoulli's experiment, where would the fluid velocity typically be highest?

a: At the inlet section Explanation

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b: At the diverging section Explanation

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c: At the throat (narrowest section) Explanation

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d: At the outlet section Explanation

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7. Why is Bernoulli's equation considered an approximation rather than an exact law for all fluid flows?

a: It only applies to gases. Explanation

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b: It neglects the effects of gravity. Explanation

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c: It assumes an ideal fluid, neglecting viscous effects and energy losses. Explanation

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d: It does not account for changes in fluid density. Explanation

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8. In a typical horizontal Bernoulli's apparatus, how does the elevation head (Z) usually behave along the streamline?

a: It increases with velocity. Explanation

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b: It decreases with pressure. Explanation

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c: It remains approximately constant. Explanation

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d: It varies significantly along the flow. Explanation

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9. What is the physical significance of the 'constant' term in Bernoulli's equation (P/ρg + V²/2g + Z = Constant)?

a: It represents the fluid's temperature. Explanation

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b: It signifies the total energy per unit weight of the fluid along a streamline. Explanation

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c: It indicates the fluid's viscosity. Explanation

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d: It is a dimensionless quantity. Explanation

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Bernoulli's Experiment