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CE Quiz 40

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Question 1

The depth of water below the spillway and after hydraulic jump are 1 m and 6 m respectively. The head loss will be ______.

Question 2

Consider the following statements

1) Flow is critical under free flow/free-fall condition in open channel flow.

2) Specific energy in a rectangular channel is 1.5 times of the critical flow depth.

3) Hydraulic jump occurs when subcritical stream meets supercritical stream.

Which of the above statements are correct?

Question 3

The sequent depth ratio in a hydraulic jump formed in a rectangular horizontal channel is 10. The Froude number of the supercritical flow is

Question 4

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

Question 5

At a hydraulic jump, the flow depths are 0.4 m and 5 m at the upstream and downstream, respectively. The channel is wide rectangular. The discharge per unit width is nearly

Question 6

An adverse slope is followed by a mild slope bed channel as shown in the figure below. The gradually varied profiles are

Question 7

A hydraulic jump occurs at the toe of a spillway. The depth before jump is 30 cm. If the sequent depth is 3.5 m then the energy dissipated is

Question 8

Hydraulic jump forms in a horizontal rectangular channel carrying a unit discharge of 1.019 m³/sec/m at a depth of 101.9 mm.
This jump is classified as

Question 9

The sequent depth ratio of a hydraulic jump in a rectangular channel is 13.65 . What is the Froud’s number at the beginning of the jump

Question 10

The losses in open channel vary as proportional to _____.

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