Civil Engineering - Irrigation - Discussion

Discussion Forum : Irrigation - Section 1 (Q.No. 23)
23.
Groynes are generally built
perpendicular to the bank
inclined up stream up to 30°
inclined down stream upto 30°
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
37 comments Page 3 of 4.

Chiranjib Das said:   7 years ago
The Correct answer is A.

Sharmi said:   8 years ago
D is the correct answer.

Sujan said:   8 years ago
I think D is correct.

Rajjak Khan said:   8 years ago
I think D is the right answer.

Shovan De said:   8 years ago
1. Attracting Groyne-pointed downstream and at an angle of 45-60° with downstream.

2. Deflecting Groyne-pointed upstream and at an angle of 20-30° with normal of the bank.

3. Repelling Groyne-At an angle of 90° with the bank.

Beside that T shape and inverted hocky shape Groyne also placed according to uses.

So I think the answer will all the above as not mentioning the type of Groyne is.

Akram said:   8 years ago
Repelling Groynes are built upstream at n angle 30°.

Mohit k said:   8 years ago
Yes option A is also correct as spur and groyne are kind of same thing.

And spurs are made perpendicular to bank.

Manasa said:   8 years ago
If it is B then what about the option A? it also be right.

Nagaraj Koppa said:   8 years ago
Answer is D, All the above are correct.

Raju roy said:   8 years ago
Ans B is correct because it shows that it is repelling Groyne which is designed at an angle 60 to 80 degree to upstream.

i.e. 10-30 degree normal to the river bank.


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