Irrigation Engineering (3170609) MCQs

MCQs of DIVERSION HEAD WORKS & STORAGE WORKS

Showing 11 to 20 out of 49 Questions
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11.

The structure finally subsides in the hollow formed in the foundation in which failure?

(a)

Overturning
(b)

Collapse
(c)

Undermining
(d)

 Uplift
Answer:

Option (c)

12.

Heave piping may occur on the _______________

(a)

downstream of sheet pile or cut off wall
(b)

 upstream of sheet pile or cut off wall
(c)

 body of earth structure
(d)

below the foundation
Answer:

Option (a)

13.

The safety of a hydraulic structure founded on a pervious foundation can be ensured by:

i. Provision sufficient length of its concrete floor.
ii. Providing sufficient depth of its concrete floor.
iii. Provision a downstream cutoff of some reasonable depth.

(a)

1 and 2
(b)

1 and 3
(c)

2 and 3
(d)

1,2,3 
Answer:

Option (d)

14.

 What is the value of Bligh’s coefficient for coarse-grained soil?

(a)

15
(b)

9
(c)

12
(d)

5-9
Answer:

Option (c)

15.

For sand mixed with boulder and gravel and for loam soil, the safe hydraulic gradient should be ___________

(a)

1/15
(b)

1/5-1/9
(c)

1/12
(d)

None of these
Answer:

Option (b)

16.

 Which of the following is not a limitation of creep theory?

(a)

No distinction between the vertical and horizontal creep
(b)

 No distinction between effectiveness of outer and inner faces of sheet pile
(c)

Significance of exit gradient is not considered
(d)

Only a nominal floor thickness is required on the upstream side so as to resist water
Answer:

Option (d)

17.

 According to Bligh, a vertical cut-off at U/s end of the floor is less useful than the one at the D/s end of the floor.

(a)

True
(b)

False
Answer:

Option (b)

18.

Consider the following statements about Bligh’s Creep Theory.
i. Creep length is the length of path traversed by percolating water
ii. To increase the path of percolation vertical cut-off or sheet piles can be provided
iii. Loss of head per unit creep length is hydraulic gradient
iv. Bligh gave no criteria for the safety of weir against undermining

Which of the following statements are correct?

(a)

1,2,3
(b)

2,3,4
(c)

1,3,4
(d)

1,2,3,4
Answer:

Option (a)

19.

irrigation-engineering-questions-answers-blighs-creep-theory-q8

what is creep length ?

(a)

50
(b)

26
(c)

58
(d)

36
Answer:

Option (c)

20.

Which method is evolved by khosla for designing of hydraulic structures?

(a)

Method of Gradients
(b)

Method of Variables
(c)

Method of Independent Variables
(d)

 Method of Flow Nets
Answer:

Option (c)

Showing 11 to 20 out of 49 Questions
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