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UPPSC AE (CE) Quiz 28

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Question 1

In case of open channels the specific energy is defined as

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

In a triangular channel, find the minimum specific energy of flow if its critical depth is 1.2 m

Question 4

Calculate the specific energy (m- kg/kg) of the flow if the velocity of flow is 2.22 m/s and depth of flow is 1 m.

Question 5

Direction: Each of the following items consists of two statements, one labelled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the codes below:

Statement (I): Open channel flow in a channel is said to be critical when the specific force is maximum for a given discharge.
Statement (II): Direct integration for steady non-uniform flow by Bresse’s method was developed for very wide rectangular channels.

Question 6

Which one of the following statements is correct regarding critical state of flow through a channel section?

Question 7

Which of the following represents the critical velocity for the discharge per unit width of q m³/s/m from the wide rectangular channel?

Question 8

What is the specific energy (m-kg/kg) for 1 m depth of flow having velocity of 3 m/s?

Question 9

A 4.6 wide rectangular channel carry water at a depth of 2.8. In order to measure the discharge the channel width is reduced to 2.4m and height of hump= 0.4m is provided at bottom of the channel. If the water surface drops by 0.2m at the contracted d/s part. The discharge in cumec is?

Question 10

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

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