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GATE CE: Hydrology Champion Quiz 5

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Question 1

A horizontal bed channel is followed by a steep bed channel as shown in the figure. The gradually-varied profiles over the horizontal and steep beds are

Question 2

Wading technique is used:

Question 3

A flood wave with a known inflow hydrograph is routed through a large reservoir. The outflow hydrograph will have

Question 4

While applying the Rational formula for computing the design discharge, the rainfall duration is stipulated as the time of concentration because

Question 5

For steady flow to a fully penetrating well in a confined aquifer, the drawdowns at radial distances of r₁ and r₂ from the well have been measured as s₁, and s₂ respectively, for a pumping rate of Q. The Transmissivity of the aquifer is equal to

Question 6

Two observation wells penetrated into a confined aquifer and located 1.5km apart in the direction of flow, indicate head of 45m and 20m. if the coefficient of permeability of the aquifer is 30m/day and porosity is 0.25, the time of travel of an inert tracer from one well to another is

Question 7

A partially open sluice gate discharges water into a rectangular channel. The tail water depth in the channel is 3mm and Froude number is $Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\Civil Engg\Civil Engineeing-01-Apr\Civil-Engineering-2005-01-Apr_files\image180.png$ . If a hydraulic jump is to be formed at a downstream of the sluice gate after the vena contracta of the Jet coming out of sluice gate, the sluice gate opening should be (coefficient of contraction C_c = 0.9)

Question 8

A well of diameter 20 cm fully penetrates a confined aquifer. After a long period of pumping at a rate of 2720 litres per minute, the observations of drawndown taken at 10 m and 100 m distances from the center of the well are found to be 3 m and 0.5 m respectively. The transmissivity of the aquifer is

Question 9

In an aquifer extending over 150 hectare, the water table was 20 m below ground level. Over a period of time the water table dropped to 23 m below the ground level. If the porosity of aquifer is 0.40 and the specific retention is 0.15, what is the change in ground water storage of the aquifier??

Question 10

The average rainfall for a 3 hour duration storm is 2.7 cm and the loss rate is 0.3 cm/hr. The flood hydrograph has a base flow of 20 m³/s and produces a peak flow of 210 m³/s. The peak of a 3–h unit hydrograph is

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ESE & GATE CE Irrigation Engineering

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