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Fluid Mechanics : Nuclear Quiz 3

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Question 1

Flow rate of a fluid (density = 1000kg/m³) in a small diameter tube is 800 m³/s. The length and the diameter of the tube are 2m and 0.5mm respectively. The pressure drop in 2m length is equal to 2.0 MPa. The viscosity of the fluid is

Question 2

A river reach of 2.0 km long with maximum flood discharge of 10000 m³/s is to be physically modeled in the laboratory where maximum available discharge is 0.20 m¹/s. For a geometrically similar model based on equality of Froude number, the length of the river reach (m) in the model is

Question 3

A triangular open channel has a vertex angle of 90 ° and carries flow at a critical depth of 0.30m the discharge in the channel is

Question 4

The x component of velocity in a two dimensional incompressible flow is given by u = 1.5 x. At the point (x, y) = (1, 0), the y component of velocity v = 0. The equation for the y component of velocity is

Question 5

There is a free overfall at the end of a long open channel. For a given flow rate, the critical depth is less than the normal depth. What gradually varied flow profile will occur in the channel for this flow rate?

Question 6

At two points ‘1’ and ‘2’ in a pipeline, the velocities of fluid are v and 3v respectively. Both points are at same elevation. The flow can be assumed to be incompressible, inviscid, steady and irrotational. The difference in pressure P₁and P₂ at point 1 and 2 is

Question 7

A trapezoidal section of an open channel has side slope 2H:1V. If bottom width is 'b ’ and depth d’, the relation between b & d for most economical trapezoidal section of the channel is:

Question 8

Group I contains the types of fluids while Group II contains the shear stress - rate of shear relationship of different types of fluids, as shown in the figure.
Group I
P. Newtonian fluid
Q. Pseudo plastic fluid
R. Plastic fluid
S. Dilatant fluid
Group II
1) Curve 1
2) Curve 2
3) Curve 3
4) Curve 4
5) Curve 5

The correct match between Group I and Group II is

Question 9

A venturimeter having a throat diameter of 0.1 m is used to estimate the flow rate of a horizontal pipe having a diameter of 0.2 m. For an observed pressure difference of 2 m of water head and coefficient of discharge equal to unity, assuming that the energy losses are negligible, the flow rate (in m³/s) through the pipe is approximately equal to

Question 10

In case of Steady Flow

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ESE & GATE CE Fluid Mechanics

Jul 27ESE & GATE CE