Recent questions tagged hydrology / GO Civil

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GATE2020 CE-2-12
Muskingum method is used in hydrologic reservoir routing hydrologic channel routing hydraulic channel routing hydraulic reservoir routing

Muskingum method is used inhydrologic reservoir routinghydrologic channel routinghydraulic channel routinghydraulic reservoir routing

go_editor

5.3k points

go_editor asked Feb 13, 2020

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2

GATE2020 CE-2-14
A triangular direct runoff hydrograph due to a storm has a time base of $90$ hours. The peak flow of $60\: m^3/s$ occurs at $20$ hours from the start of the storm. The area of catchment is $300\: km^2$. The rainfall excess of the storm (in cm), is $2.00$ $3.24$ $5.40$ $6.48$

A triangular direct runoff hydrograph due to a storm has a time base of $90$ hours. The peak flow of $60\: m^3/s$ occurs at $20$ hours from the start of the storm. The ar...

go_editor

5.3k points

go_editor asked Feb 13, 2020

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3

GATE2017 CE-2-23
During a storm event in a certain period, the rainfall intensity is $3.5$ cm/hour and the $\Phi$-index is $1.5$ cm/hour. The intensity of effective rainfall (in cm/hour, up to one decimal place) for this period is ________

During a storm event in a certain period, the rainfall intensity is $3.5$ cm/hour and the $\Phi$-index is $1.5$ cm/hour. The intensity of effective rainfall (in cm/hour, ...

gatecse

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gatecse asked Aug 7, 2019

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4

GATE2017 CE-2-24
The infiltration capacity of a soil follows the Horton's exponential model, $f=c_1+c_2e^{-kt}$. During an experiment, the initial infiltration capacity was observed to be $200$ mm/h. After a long time, the infiltration capacity was reduced $25$ mm/h. If the filtration capacity ... $k$ (in $h^{-1}$, up to two decimal places) is ________

The infiltration capacity of a soil follows the Horton’s exponential model, $f=c_1+c_2e^{-kt}$. During an experiment, the initial infiltration capacity was observed to ...

gatecse

4.0k points

gatecse asked Aug 7, 2019

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5

GATE2017 CE-2-47
A catchment is idealized as a $25 \: km \times 25 \: km$ ... . The average precipitation (in mm, up to one decimal place) over the catchment during this month by using the Thiessen polygon method is ___________

A catchment is idealized as a $25 \: km \times 25 \: km$ square. It has five rain gauges, one at each corner and one at the corner, as shown in the figure.During a month,...

gatecse

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gatecse asked Aug 7, 2019

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6

GATE2019 CE-1: 15
A catchment may be idealised as a rectangle. There are three rain gauges located inside the catchment at arbitrary locations. The average precipitation over the catchment is estimated by two methods: Arithmetic mean $(P_A)$ Thiessen polygon $(P_T)$ Which one of the ... greater than $P_T$ $P_A$ is always equal to $P_T$ There is no definite relationship between $P_A$ and $P_T$

A catchment may be idealised as a rectangle. There are three rain gauges located inside the catchment at arbitrary locations. The average precipitation over the catchment...

Arjun

13.0k points

Arjun asked Feb 14, 2019

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7

GATE2019 CE-1: 49
The hyetograph of a storm event of duration $140$ minutes is shown in the figure: The infiltration capacity at the start of this event $(t=0)$ is $17 \: mm/hour$, which linearly decreases to $10 \: mm/hour$ after $40$ minutes duration. As the event ... of the storm event. The value of the infiltration index, $\phi$ (in $mm/hour$ round off to $2$ decimal places), is _____________

The hyetograph of a storm event of duration $140$ minutes is shown in the figure:The infiltration capacity at the start of this event $(t=0)$ is $17 \: mm/hour$, which li...

Arjun

13.0k points

Arjun asked Feb 14, 2019

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8

GATE2019 CE-1: 50
Two water reservoirs are connected by a siphon (running full) of total length $5000$ m and diameter of $1.10$ m, as shown below (figure not drawn to scale). The inlet leg length of the siphon to its summit is $2000$ m. The difference in the water surface ... of the summit of siphon from the water level of upper reservoir, $h$ (in m, round off to $1$ decimal place) is ______

Two water reservoirs are connected by a siphon (running full) of total length $5000$ m and diameter of $1.10$ m, as shown below (figure not drawn to scale).The inlet leg ...

Arjun

13.0k points

Arjun asked Feb 14, 2019

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9

GATE2019 CE-2: 14
An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph. The peak flow of the inflow hydrograph is $P_I$ and the time of occurrence of the peak is $t_I$. The peak flow of the outflow hydrograph is $P_O$ and the time of occurrence of the peak is $t_O$. ... $P_I <P_O$ and $t_I > t_O$ $P_I >P_O$ and $t_I < t_O$ $P_I >P_O$ and $t_I > t_O$

An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph. The peak flow of the inflow hydrograph is $P_I$ and the time of occurrence of the pea...

Arjun

13.0k points

Arjun asked Feb 12, 2019

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10

GATE2019 CE-2: 47
A confined aquifer of $15 \: m$ constant thickness is sandwiched between two aquicludes as shown in the figure (not drawn to scale). The heads indicated by two piezometers P and Q are $55.2 \: m$ and $34.1 \: m$, respectively. The aquifer has a ... taken by the water to travel through the aquifer from piezometer location P to Q (in days, round off to $1$ decimal place) is ______

A confined aquifer of $15 \: m$ constant thickness is sandwiched between two aquicludes as shown in the figure (not drawn to scale).The heads indicated by two piezometers...

Arjun

13.0k points

Arjun asked Feb 12, 2019

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11

GATE2019 CE-2: 50
The ordinates, $u$, of a $2$-hour unit hydrograph (i.e., for $1$ ... base flow is constant at $5 \: m^3/s$, the peak flow due to this storm (in $m^3/s$, round off to $1$ decimal place) will be __________

The ordinates, $u$, of a $2$-hour unit hydrograph (i.e., for $1$ cm of effective rain), for a catchment, are shown in the table.$$\begin{array}{|c|c|c|c|c|c|c|c|c|c|c|c|c...

Arjun

13.0k points

Arjun asked Feb 12, 2019

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12

GATE2016-2-15
Water table of an aquifer drops by $100$ cm over an area of $1000 \: km^2$. The porosity and specific retention of the aquifer material are $25 \%$ and $5\%$ respectively. The amount of water (expressed in $km^3$) drained out from the area is ________

Water table of an aquifer drops by $100$ cm over an area of $1000 \: km^2$. The porosity and specific retention of the aquifer material are $25 \%$ and $5\%$ respectively...