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Recent activity in Flow and Fluid Properties

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GATE XE 2022 | Question: 15
As temperature increasesthe dynamic viscosity of a gas increases.the dynamic viscosity of a liquid decreases.the dynamic viscosity of a liquid does not change.the dynamic...
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GATE XE 2026 | Question: 152
The mass (in $\mathrm{kg}$) of dry air in a room, measuring $10 m \times 7 m \times 3 m$, is $\_\_\_\_$. (rounded off to two decimal places)[Density of dry air is $1.029 ...
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GATE XE 2026 | Question: 149
In a stable atmosphere, the change in pressure (in kilo Pascal) at a height of $100 \mathrm{~m}$ from the mean sea level is $\_\_\_\_$. (rounded off to three decimal plac...
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GATE XE 2026 | Question: 30
A rectangular block (density $=600 \mathrm{~kg} \cdot \mathrm{~m}^{-3}$ ) with base area of $0.06 \mathrm{~m}^{2}$ and height $15$ cm is partially submerged in water (den...
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GATE XE 2026 | Question: 28
A gas is pressurized in a vertical frictionless piston-cylinder device, as shown in the figure. The piston has a mass of $4$ kg and a cross-sectional area of $40 \mathrm{...
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GATE XE 2026 | Question: 16
Consider the following statements:Assertion (a)Surface tension acts along the interface of two fluids.Reason (r)The pressure of the fluid inside a bubble is higher than t...
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GATE XE 2025 | Question: 172
A floating hot air balloon with volume $1000 \mathrm{~m}^{3}$ and gross mass (excluding the air in the balloon) $100 \: \mathrm{kg}$ is in hydrostatic balance where the e...
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GATE XE 2025 | Question: 39
Consider, a kite weighing $100$ grams as essentially a rigid flat plate making an angle $8^{\circ}$ with the horizontal and having a planform area of $0.045 \mathrm{~m}^{...
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GATE XE 2025 | Question: 33
​​​​A solid body of uniform specific gravity floats in a deep liquid pool. Take $B, G$, and $M$ as the centre of buoyancy, centre of gravity, and metacentre of the body, ...
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GATE XE 2025 | Question: 26
​​​For a steady and incompressible flow, the velocity field $(\vec{V})$ in Cartesian $(x, y, z)$ coordinate system is given as:$$\vec{V}=5 x i-P y j+3 k$$Here, $i, j$, an...
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GATE XE 2024 | Question: 12
Which one of the following figures shows the CORRECT dependence of apparent viscosity $(\eta)$ on rate of shear strain $(d u / d y)$ for pseudoplastic fluids?
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GATE XE 2024 | Question: 19
For an immersed neutrally buoyant body to be in stable equilibrium, the center of gravity of the body is directlyabove the metacenter.below the metacenter.above the cente...
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GATE XE 2024 | Question: 24
Consider a fluid flow around an airfoil as shown in figure.The directions of drag force and lift force, respectively are alongOA and OC.OA and OD.OB and OC .OB and OD .
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GATE XE 2024 | Question: 25
A vessel which contains a volatile liquid and its vapour is connected with a mercury manometer as shown in figure. Both the liquid and vapour phases are at equilibrium. T...
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GATE XE 2024 | Question: 27
Consider two parallel plates separated by a distance of $1$ cm filled with a Newtonian fluid of viscosity $10^{-3} \mathrm{~Pa}$.s. The top plate is moving with a velocit...
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GATE XE 2022 | Question: 12
A heavy horizontal cylinder of diameter $D$ supports a mass of liquid having density $\rho$ as shown in the figure. Find out the vertical component of force exerted by th...
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GATE XE 2022 | Question: 30
A wooden cylinder $\text{(specific gravity} $=0.6$)$ of length $L$ and diameter $D$ floats in water $\text{(density}$ $1000 \mathrm{~kg} / \mathrm{m}^3)$. Find out the mi...
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GATE XE 2022 | Question: 31
A wooden cylinder $\text{(specific gravity}$ $=0.6$ ) of length $L$ and diameter $D$ floats in water $\text{(density}$ $1000 \mathrm{~kg} / \mathrm{m}^3$). Find out the m...
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GATE XE 2023 | Question: 15
Among the shear stress versus shear strain rate curves shown in the figure, which one corresponds to a shear thinning fluid ? $\mathrm{P}$$\mathrm{Q}$$\mathrm{R}$$\mathrm...
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GATE XE 2023 | Question: 18
Which of the following statements are true?$\text{(i)}$ Conservation of mass for an unsteady incompressible flow can be represented as $\nabla \cdot \vec{V}=0$, where $\v...
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GATE XE 2023 | Question: 20
A stationary object is fully submerged in a static fluid, as shown in the figure. Here, $\text{CG}$ and $\mathrm{CB}$ stand for center of gravity and center of buoyancy, ...
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GATE XE 2023 | Question: 27
\begin{tabular}{|l}Q. 37 \\Water $\left(\right.$ density $\left.=1000 \mathrm{~kg} / \mathrm{m}^{3}\right)$ and alcohol (specific gravity $=0.7$ ) enter a \\Y-shaped chan...
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GATE XE 2023 | Question: 33
Q. 43 A stationary circular pipe of radius $R=0.5 \mathrm{~m}$ is half filled with water (density =$1000 \mathrm{~kg} / \mathrm{m}^{3}$ ), whereas the upper half is fille...
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GATE XE 2023 | Question: 83
\begin{tabular}{|l|l|}\hline Q.93 & Adiabatic bulk modulus of a substance is defined as \\\hline& $-\frac{1}{v}\left(\frac{\partial v}{\partial P}\right)_{T}$ \\\hline& $...
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GATE XE 2023 | Question: 162
Q. 172A cylindrical tank containing water is rotating about the z-axis at a constant angular velocity of $10 \mathrm{rad} \mathrm{s}^{-1}$. The schematic of the isobaric ...
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GATE XE 2024 | Question: 147
If the isobars and isopycnals are parallel to each other, the flow is said to bebaroclinicbarotropicgeostrophicrotational
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