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ESE 2021 Technical Quiz ||River Training, Diversion Headwork, Cross Drainage Work and Miscellaneous

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Question 1

Consider the following statements:
The function of a launching apron at the end of downstream impervious apron of a weir is
1). To protect the downstream pile from the scour holes progressing in the upstream direction.
2). When the scour holes are formed, to provide for the stones of the falling apron to settle down in the holes and cover them.
3). To provide relief of the uplift pressure at the downstream end.
4). To provide extra length for proper formation of hydraulic jump.
Which of these statements is/are correct?

Question 2

Match List-I with List-II and select the correct answer using the codes given below the lists:
A). Deflector
B). Biff wall
C). Cistern
D). Baffle wall
1). Low – height wall across canal down-stream of the fall
2). Vertical end wall with horizontal projection
3). Short wall at down-stream end of the fall
4). Pond level below the fall

Question 3

Denehy’s groyne is a special type of groyne which is

Question 4

The river training work is generally required when the river is

Question 5

What are the recommended setting options of an adjustable proportional module worked with an open flume type outlet?
1). 3/10
2). 9/10
3). ½
4). 5/3
Select the correct answer using the codes given below:
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