Recent questions tagged environmental-hydraulics

Consider the following statements regarding the pressure measured at a point in a fluid.$\text{S}1$: Absolute pressure is gauge pressure plus atmospheric pressure.$\text{...

Water is flowing at the rate of $15 \mathrm{~m}^{3} / \mathrm{s}$ through a rectangular channel of $5$ $\mathrm{~m}$ width.If the acceleration due to gravity $(g)$ is $9....

A cylindrical roller gate of diameter $6.0$ $\mathrm{m}$ and length $10.0$ $\mathrm{m}$ is placed on a dam to store water behind it, as shown in figure.The magnitude of t...

A well penetrates an unconfined aquifer. The water level (i.e., head) in the well prior to pumping is $25$ $\mathrm{m}$. After a long period of pumping at a constant rate...

​​​​For flood routing, consider the following statements$\text{P}$ : Hydrologic routing method uses continuity equation and momentum equation$\text{Q}$ : Hydraulic routin...

​​​​For a gradually varied flow, consider the following statements$\mathrm{P}: y_{n}>y_{c}>y$ in $M_{3}$ surface profile$\mathrm{Q}: $y_{n}<y_{c}<y$ in $S_{1}$ surface p...

​​​Match the following and choose the correct option from the following$1-\mathrm{z}, 2-\mathrm{y}, 3-\mathrm{x}$$1-\mathrm{y}, 2-\mathrm{z}, 3-\mathrm{x}$$1-\mathrm{x}, ...

Aerobic biomass has yield coefficient value of $0.4$ for glucose (molecular weight $= 180 \mathrm{~g} / \mathrm{mole}$) substrate. Bacteria is represented as $\mathrm{C}_...

The following figure (not to scale) depicts a rainfall hyetograph for a storm over a catchmentIf the storm produced a direct runoff of $12.5 \: \mathrm{mm}$, then the $\p...

A pipe line $\boldsymbol{O P} \boldsymbol{Q} \boldsymbol{R}$ branches into three pipes $\boldsymbol{X}, \boldsymbol{Y}$, and $\boldsymbol{Z}$ between points $\boldsymbol{...

A circular sewer pipe, having Manning's coefficient $(n)$ of $0.01$, is laid at a bed slope of $1: 100$. If it is flowing $80 \%$ full for a discharge of $2 \mathrm{~m}^{...

Crown corrosion of reinforced cement concrete sewer is caused by ___________.sulfur oxidizing bacteriairon oxidizing bacteriadenitrifying bacteriafermentative bacteria

In a rectangular open channel, the flow is critical, and the flow depth is $2 \mathrm{~m}$. Select the correct statement(s)Specific energy for the flow is $3.0 \mathrm{~m...

In the context of fluid flow, which of the following statement(s) is/are correct?Streamline is a line, tangent to which at any point gives the direction of the velocity v...

With respect to particle settling in wastewater treatment systems; the correct statement(s) is/areSettling in grit chamber and primary sedimentation tanks are examples of...

A Class-A pan was setup adjacent to a lake for measuring evaporation losses in the lake. The depth of water in the pan at the beginning of a certain week was $250 \mathrm...

Consider two horizontal layers of an aquifer as shown in figure. Each layer is isotropic and homogeneous. Flow is parallel to the stratification. Thickness and horizontal...

Water is flowing FULL through a rectangular tunnel of size $3 \mathrm{~m}$ (width) $\times 2 \mathrm{~m}$ (height). The average velocity of flow is $1 \mathrm{~m} / \math...

The Streeter-Phelp's oxygen sag equation for a river is based on a few assumptions. The correct assumption$\text{(s)}$ is/areAt any instant the deoxygenation rate is dire...

In a cyclone separator of radius $25 \mathrm{~cm}$, a particle is travelling with a gas stream at velocity of $18 \mathrm{~m} / \mathrm{s}$. The ratio of centrifugal forc...