Q. The hydraulic radius for flow in a rectangular duct of cross-sectional dimension H, W is

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Q. A pipe has a porous section of length L as shown in the figure. Velocity at the start of this section of V₀. If fluid leaks into the pipe through the porous section at a volumetric rate per unit area q(x/L)², what will be axial velocity in the pipe at any x ? Assume incompressible one dimensional flow i.e., no gradients in the radial direction.

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Q. A free jet of water of cross-sectional area 0.01 m² and a velocity of 20 m/s strikes a plate and then flows in a plane parallel to the plate as shown in the figure below. The horizontal component of the force on the support is

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Q. Pressure drop for laminar fluid flow through a circular pipe is given by

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Q. Drag co-efficient for motion of spherical particles in a stationary fluid in the stoke's law range is

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Q. Hydraulic mean radius for flow through packed bed of spherical particle of size, 'Dₚ', with porosity 'ε' is

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Q. A conical tank with a bottom opening of cross-sectional area A is filled with water and is mounted on supports as shown in the figure. What is the force F with which plate X must be pushed up to prevent water from leaking ? Assume that the density of air is negligible as compared to the density of water ρL.

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Q. The equivalent diameter for pressure drop calculation for a duct of square cross-section is given by(where, x = each side of the square duct)

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Q. Each term of the Bernoulli's equation written in the following form, represents the total energy per unit

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Q. For one dimensional flow of an incompressible fluid in unsteady state in x-direction, the continuity equation is given by

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Q. The inherent characteristic of an equal percentage valve relating flow rate 'q' with valve stem movement 'x' are described by the equation

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Q. Curve III in the below diagram represents a/an

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Q. Colebrook equation for friction factor in turbulent flow is given by following equation. It reduces to Nikuradse equation for a value of ε/D equal to

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Q. The percentage slip in a reciprocating pump set is given by the % of (where, Q₁ = actual discharge Q₂ = theoretical discharge)

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Q. A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke's law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity

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Q. The pitot static tube does not measure the __________ pressure.

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Q. The fluid in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a __________ fluid.

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Q. In fluid flow, cavitation is caused, if the

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Q. The ratio of the depth of flow to the hydraulic radius for the most economical trapezoidal section, in open channel flow is

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Q. Which of the following denotes the effect of compressibility in fluid flow ?

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