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GATE Prev Year : Fluid Mechanics Test-2

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Question 1

Which among the following information is correct in case of a Bend?

Question 2

A cylindrical body of cross-sectional area A, height H and density, ρ_s is immersed to a depth h in a liquid of density ρ, and tied to the bottom with a string. The tension in the string is

Question 3

Figure shows the schematic for the measurement of velocity of air (density = 1.2 kg/m³) through a constant-area duct using a pitot tube and a water-tube manometer. The differential head of water (density = 1000 kg/m³) in the two columns of the manometer is 10 mm. Take acceleration due to gravity as 9.8 m/s². The velocity of air in m/s is
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Question 4

For air flow over a flat plate, velocity (U) and boundary layer thickness (δ) can be expressed respectively, as
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If the free stream velocity is 2m/s, and air has kinematic viscosity of 1.5×10^-5 m2/s and density of 1.23 kg/m³, the wall shear stress at x = 1m, is

Question 5

Consider the following statements regarding streamline(s):
(i) It is a continuous line such that the tangent at any point on it shows the velocity vector at that point
(ii) There is no flow across streamlines
(iii)

is the differential equation of a streamline, where

are velocities in directions

, respectively
(iv) In an unsteady flow, the path of a particle is a streamline
Which one of the following combinations of the statements is true?

Question 6

In a cube the rate of flow of mass is given as:

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ESE & GATE ME Fluid Mechanics & Machinery

Oct 16ESE & GATE ME