GATE Civil Engineering

The drag force, $F_D$ on a sphere due to a fluid flowing past the sphere is a function of viscosity, $\mu$, the mass density, $\rho$, the velocity of flow, $V$ and the diameter of...

For a flowing fluid, a dimensionless combination of velocity (V), length scale (l), and acceleration due to gravity (g) would be

Consider flow in a long and very wide rectangular open channel. Width of the channel can be considered as infinity compared to the depth of flow. Uniform flow depth is 1.0 m . The...

For the Bernoulli's equation to be applicable in a fluid flow situation, which of the following conditions is/are to be satisfied:

A hydraulic jump is formed in a 5 m wide rectangular channel, which has a horizontal bed and is carrying a discharge of $15 \mathrm{~m}^3 / \mathrm{s}$. The depth of water upstream...

Lacey's regime equations, followed in India for making scour calculations while designing hydraulic structures across alluvial channels, are given below. Regarding these equations,...

A 5.0 m wide rectangular channel carries a discharge of $10 \mathrm{~m}^3 / \mathrm{s}$ at a depth of 1.5 m under uniform flow. To produce critical flow conditions without affectin...

A hydraulic jump occurs in an open channel when the slope of the channel changes from__________ .

The number of degrees of freedom for a natural open channel flow with a mobile bed is

A 30 cm diameter well fully penetrates an unconfined aquifer of saturated thickness 20 m with hydraulic conductivity of 10 m/day. Under the steady pumping rate for a long time, the...

A flow velocity field $\vec{V} : \vec{V}(x, y)$ for a fluid is represented by $\vec{V} = 3 \hat{i} + (5x) \hat{j}$ In the context of the fluid and the flow, which one of the follow...

A 2 m wide rectangular channel is carrying a discharge of 30 m 3 /s at a bed slope of 1 in 300. Assuming the energy correction factor as 1.1 and acceleration due to gravity as 10 m...

A round-bottom triangular lined canal is to be laid at a slope of 1 in 1500, to carry a discharge of 25 m 3 /s. The side slopes of the canal cross-section are to be kept at 1.25H :...

A hypothetical multimedia filter, consisting of anthracite particles (specific gravity: 1.50), silica sand (specific gravity: 2.60), and ilmenite sand (specific gravity: 4.20), is...

A 500 m long water distribution pipeline P with diameter 1.0 m, is used to convey 0.1 m 3 /s of flow. A new pipeline Q, with the same length and flow rate, is to replace P. The fri...

A 2 m × 1.5 m tank of 6 m height is provided with a 100 mm diameter orifice at the center of its base. The orifice is plugged and the tank is filled up to 5 m height. Consider the...

A rectangular channel is 4.0 m wide and carries a discharge of 2.0 m 3 /s with a depth of 0.4 m. The channel transitions to a maximum width contraction at a downstream location, wi...

When a supercritical stream enters a mild-sloped (M) channel section, the type of flow profile would become _________.

G 1 and G 2 are the slopes of the approach and departure grades of a vertical curve, respectively. Given |G 1 | < |G 2 | and |G 1 | ≠ |G 2 | ≠ 0 Statement 1 : +G 1 followed by +G 2...

A jet of water having a velocity of 20 m/s strikes a series of plates fixed radially on a wheel revolving in the same direction as the jet at 15 m/s. What is the percentage efficie...

A hydraulic jump occurs in a 1.0 m wide horizontal, frictionless, rectangular channel, with a pre-jump depth of 0.2 m and a post-jump depth of 1.0 m. The value of g may be taken as...

The critical flow condition in a channel is given by _______. [Note: 𝛼 – kinetic energy correction factor; 𝑄 – discharge; A c – cross-sectional area of flow at critical flow cond...

Which of the following statements is/are TRUE?

The cross-section of a small river is sub-divided into seven segments of width 1.5 m each. The average depth, and velocity at different depths were measured during a field campaign...

With respect to fluid flow, match the following in Column X with Column Y: Column X Column Y P. Viscosity I. Mach number Q. Gravity II. Reynolds number R. Compressibility III. Eule...

A rectangular channel with Gradually Varied Flow (GVF) has a changing bed slope. If the change is from a steeper slope to a steep slope, the resulting GVF profile is

Depth of water flowing in a 3 m wide rectangular channel is 2 m. The channel carries a discharge of 12 m 3 /s. Take g = 9.8 m/s 2 . The bed width (in m) at contraction, which just...

Two discrete spherical particles (P and Q) of equal mass density are independently released in water. Particle P and particle Q have diameters of 0.5 mm and 1.0 mm, respectively. A...

A hydraulic jump takes place in a 6 in wide rectangular channel at a point where the upstream depth is 0.5 m (just before the jump). If the discharge in the channel is 30 m 3 /s an...

Water is flowing in a horizontal, frictionless, rectangular channel. A smooth hump is built on the channel floor at a section and its height is gradually increased to reach choked...

The dimension of dynamic viscosity is :

A triangular gate with a base width of 2 m and a height of 1.5 m lies in a vertical plane. The top vertex of the gate is 1.5 m below the surface of a tank which contains oil of spe...

The dimension for kinematic viscosity is

If a small concrete cube is submerged deep in still water in such a way that the pressure exerted on all faces of the cube is p, then the maximum shear stress developed inside the...

For a body completely submerged in a fluid, the centre of gravity (G) and centre of Buoyancy (O) are known. The body is considered to be in stable equilibrium is

A 15 cm length of steel rod with relative density of 7.4 is submerged in a two layer fluid. The bottom layer is mercury and the top layer is water. The height of top surface of the...

Cavitation is caused by

Shear stress in the Newtonian fluid is proportional to

If, for a fluid in motion, pressure at a point is same in all directions then the fluid is

A liquid of density $$\mathrm\rho$$ and dynamic viscosity $$\mathrm\mu$$ flows steadily down an inclined plane in a thin sheet of constant thickness t. Neglecting air friction the...

Shear stress develops on a fluid element, if the fluid

Surface tension is due to

A floating body with its center of gravity at 'G' center of buoyancy at 'B' and metacentre at 'M' is stable when