GATE CE topic:hydraulics PYQs & Answers — Page 4

Questions 31–40 of 46. Imported answers require independent review unless marked reviewed.

Topic practice 46 questionsPage 4 of 5

A 4 m wide rectangular channel carries 6 m³/s of water. The Manning’s ‘n’ of the open channel is 0.02. Considering g = 9.81 m/s², the critical velocity of flow (in m/s, round off to two decimal places) in the channel is ________.

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Water flows at the rate of 12 m³/s in a 6 m wide rectangular channel. A hydraulic jump is formed in the channel at a point where the upstream depth is 30 cm (just before the jump). Considering acceleration due to gravity as 9.81 m/s² and density of water as 1000 kg/m³, the energy loss in the jump is

Your answerChoose one option.

114.2 kW

114.2 MW

141.2 h.p.

141.2 J/s

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A hydraulic jump occurs in a triangular (V-shaped) channel with side slopes 1:1 (vertical to horizontal). The sequent depths are 0.5 m and 1.5 m. The flow rate (in m³/s, round off to two decimal places) in the channel is _____.

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In a rectangular channel, the ratio of the velocity head to the flow depth for critical flow condition, is

Your answerChoose one option.

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Consider the hemi-spherical tank of radius 13

as shown in the figure (not drawn to scale). What is the volume of water (in

) when the depth of water at the centre of the tank is 6

Diagram for Civil Engineering question 27

Your answerChoose one option.

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A rectangular open channel has a width of 5

and a bed slope of 0.001. For a uniform flow of depth 2

, the velocity is 2

. The Manning’s roughness coefficient for the channel is

Your answerChoose one option.

0.002

0.017

0.033

0.050

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At the foot of a spillway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as shown in the figure.

Diagram for Civil Engineering question 48

The flow enters as an M-3 profile in the long wide rectangular channel with bed slope =

and Manning’s

. A hydraulic jump is formed at a certain distance from the foot of the spillway. Assume the acceleration due to gravity,

. Just before the hydraulic jump, the depth of flow

(in m, round off to 2 decimal places) is ________

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For a given discharge in an open channel, there are two depths which have the same specific energy. These two depths are known as

Your answerChoose one option.

alternate depths

critical depths

normal depths

sequent depths

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A 10 m wide rectangular channel carries a discharge of 20 m

/s under critical condition. Using g = 9.81 m/s

, the specific energy (in m, up to two decimal places) is ______

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In a 5 m wide rectangular channel, the velocity

distribution in the vertical direction

is given by

. The distance

is measured from the channel bed. If the flow depth is 2 m, the discharge per unit width of the channel is

Your answerChoose one option.

2.40 m

/s/m

2.80 m

/s/m

3.27 m

/s/m

12.02 m

/s/m

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GATE CE topic:hydraulics PYQs

Question 24

Question 36

Question 50

Question 13

Question 27

Question 28

Question 48

Question 13

Question 23

Question 34