Virtual Labs

(1) Dynamic pressure is defined as:

a: (ρV²)/2 Explanation

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b: (3ρV²)/2 Explanation

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c: ρV/2 Explanation

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d: (ρV²)/4 Explanation

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(2) Pressure term in Bernoulli’s equation is:

a: Static pressure Explanation

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b: Stagnation pressure Explanation

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c: Dynamic pressure Explanation

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d: None of these Explanation

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(3) Stagnation pressure is defined as:

a: P_total + (ρV²)/2 Explanation

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b: P_static+ (ρV²)/2 Explanation

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c: P_static+ ρV/2 Explanation

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d: P_total+ ρV/2 Explanation

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(4) Assumption of flow in Bernoulli’s theorem:

a: steady Explanation

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b: irrotational Explanation

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c: frictionless Explanation

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d: All of these Explanation

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(5) Bernoulli’s equation holds true only for:

a: low viscosity and incompressible fluid in turbulent flow Explanation

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b: low viscosity and compressible fluid in turbulent flow Explanation

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c: low viscosity and incompressible fluid in streamline flow Explanation

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d: high viscosity and incompressible fluid in streamline Explanation

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(6) In a horizontal pipe when water is not flowing, pressure 3x10⁵ Pa. When water starts flowing pressure falls to 2.5x10⁵ Pa. what is the flow velocity of water

a: 5 Explanation

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b: 10 Explanation

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c: 20 Explanation

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d: 15 Explanation

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(7) Magnus effect is based on:

a: Poiseuille’s Law Explanation

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b: Newton’s Law Explanation

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c: Euler’s Law Explanation

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d: Bernoulli’s Law Explanation

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(8) In which of the following conditions can the Bernoulli equation not be used?

a: Viscous flow Explanation

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b: Incompressible fluid Explanation

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c: Laminar flow Explanation

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d: None of these Explanation

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(9) Incompressible flow is when:

a: Change in viscosity of fluid is negligible Explanation

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b: Change in thermal properties of fluid is negligible Explanation

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c: Change in density of fluid is negligible Explanation

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d: Change in density of fluid is large Explanation

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(10) Inviscid flow assumes that:

a: Thermal forces are negligible Explanation

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b: Thermal forces are large Explanation

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c: Viscous effects are negligible Explanation

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d: Viscous effects are large Explanation

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Verifying Bernoulli's energy equation