Q. What is the ratio of fluid carrying capacity of two pipes having diameters d₁ and d₂ respectively ?

View solution

Q. The equivalent diameter for flow through a rectangular duct of width B and height H is

View solution

Q. Pick out the Hagen-Poiseulle's equation.

View solution

Q. During fluid flow, variation of shear stress(τ) with velocity gradientat (dv/dy) constant pressure temperature is shown below in the figure. In the below figure, Binghom plastic is represented by the curve .

View solution

Q. Which is the correct relationship for a centrifugal pump ? (where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm)

View solution

Q. The location of centre of pressure, which defines the point of application of the total pressure force on the surface, can be calculated by applying the principle of moments according to which "sum of the moment of the resultant force about an axis is equal to the sum of the components about the same axis". The centre of pressure of a rectangular surface (of width 'w') immersed vertically in a static mass of fluid is at a depth of(where, y = depth of the liquid)

View solution

Q. A centrifugal pump is used to pump water through a horizontal distance of 150 m, and then raised to an overhead tank 10 m above. The pipe is smooth with an I.D of 50 mm. What head (m of water) must the pump generate at its exit (E) to deliver water at a flow rate of 0.001 m³/s? The Fanning friction factor, f is 0.0062.

View solution

Q. Pick out the Kozney-Karman equation (valid for low Nʀₑ) for fluid flow through a packed bed of solids.

View solution

Q. Characteristic curves for a centrifugal pump plotted against its capacity is shown in the diagram. x, y and z denote respectively

View solution

Q. Specific speed for a centrifugal pump is

View solution

Q. For flow through a venturi at a particular discharge, the correct relationships among velocities at point X, Y and Z would be

View solution

Q. In frictional fluid flow, the following quantity is

View solution

Q. What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air.

View solution

Q. For the manometer set up shown in the figure, the pressure difference Pᴀ - Pʙ is given by

View solution

Q. Drag co-officient Cᴅ, in Stoke's law range is given by

View solution

Q. In power law, consider the following equation, then the fluid is

View solution

Q. The equivalent diameter for pressure drop calculation for a fluid flowing through a rectangular cross-section channels having sides 'x' & 'y' is given by

View solution

Q. Various efficiencies of a centrifugal pump are related as (where, ηₘ = mechanical efficiency ηᵥ = volumetric efficiency. ηₘₐ = manometric efficiency ηₒ = overall efficiency)

View solution

Q. Fanning equation is given by below equation. It is applicable to __________ region flow.

View solution

Q. The head loss due to sudden expansion is

View solution