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UPPSC AE (CE) Quiz 27

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Question 1

Which one of the following statements is correct regarding flow in open channel?

Question 2

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 3

The Characteristics Length is given by ______.

Question 4

The most economical section of a rectangular channel is one having hydraulic radius equal to

Question 5

The losses in open channel vary as proportional to _____.

Question 6

Water enters into a rectangular channel of uniform cross section at a velocity of 6 m/s. The depth of water is 60 cm. What is the critical depth of flow:

Question 7

Critical depth of flow for a rectangular channel is 1.5 m and that for a triangular channel is 2.0 m, then which of the following statement(s) is/are correct.

1) Ratio of critical velocity in rectangular channel to that in triangular channel is 0.9

2) Ratio of minimum specific energy of rectangular channel to triangular channel is 1.22

3) Ratio of kinetic head at critical flow in rectangular channel to that in triangular channel is 1.5

Question 8

Rectangular channel 5 m wide carries a discharge of 12 m³/s under uniform flow condition with normal depth of 1.2 m. The minimum width to which the channel can be contracted without affecting the upstream flow condition is :

Question 9

A 10 m wide rectangular channel carries a discharge of 20cumecs under critical condition. The specific energy of the channel will be….(Use 0.74³=0.408)

Question 10

In a wide rectangular channel, the normal depth is increased by 20%. This would mean an increase in the discharge of the channel nearly by

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