Irrigation Engineering (3170609) MCQs

MCQs of DIVERSION HEAD WORKS & STORAGE WORKS

Showing 21 to 30 out of 49 Questions
1 2 3 4 5
21.

 What is the name of the gradient pressure at the exit end?

(a)

Gradient of Pressure
(b)

Exit Gradient
(c)

Streamline Gradient
(d)

Equipotential Gradient
Answer:

Option (b)

22.

 The component of which force is to be counterbalanced so that the soil grains remain stable?

(a)

Upthrust Pressure Forces
(b)

 Forces due to Velocity Components
(c)

Pressure Force
(d)

Seepage Water Force
Answer:

Option (d)

23.

khosla's formulae for assessing pressure distribution under weir floors are based on

(a)

Potential flow in permeable layers just beneath the floors
(b)

Boundary layer flow with Pressure drop longitudinally
(c)

Conforrmal transportation of Potential flow into a w plane
(d)

Simplification Of 3D flow
Answer:

Option (a)

24.

Which one of the following purpose of providing the downstream sheet pile in a barrage?

(a)

To control failure due to piping by high value of exit gradient
(b)

to control failure due to scour
(c)

To stop failure due to Sliding
(d)

To stop failure due to uplift pressure
Answer:

Option (a)

25.

A 20m long horizantal concrete floor under a barrage on a permeable foundation retains % m head of water and has a 5 m deep downstream end pile. the exit gradient is

(a)

1 in 4
(b)

1 in 5
(c)

1 in 6
(d)

1 in 8
Answer:

Option (b)

26.

The following parameters relate to the design of weir on permeable foundations:                                       

1. Scour Depth  2. Exit gradient 3. Uplift pressure  4. Unbalanced head

(a)

1 and 2
(b)

1 and 4
(c)

2 and 3
(d)

3 and 4
Answer:

Option (c)

27.

In a barrage on pervious foundation, sheet piles are provided both upstream and downstream of the barrage to reduce uplift pressure and to prevent piping  which one of the following statement is true in this regard?

(a)

compared to D/S sheet pile, the U/S pile is more effective in reducing uplift and piping
(b)

Compared to U/S sheet pile, the D/s sheet pile is more effective in reducing uplift and piping
(c)

D/s sheet pile is more effective in reducing uplift while u/s  sheet pile is more effective in reducing piping
(d)

U/S sheet pile is more effective in reducing uplift while the D/S sheet pile is more effective in reducing piping
Answer:

Option (d)

28.

A weir on permeable foundations has the folowing elements:

1. Impervious floor 2. Block Protection 3. Block Protection Over inverted Filter 4. Launching Apron

starting from upstream end the correct sequance of these elements are:

(a)

2-1-3-4
(b)

4-3-1-2-4
(c)

4-2-1-3-4
(d)

3-1-2-4
Answer:

Option (c)

29.

The Capacity of Under Sluices in a river barrage is usually equal to

(a)

two times the maximum discharge of the offtaking canal
(b)

maximum winter discharge
(c)

10 to 15 % of the maximum flood discharge
(d)

maximum of a, b, and c
Answer:

Option (d)

30.

silt excluder is provided

(a)

in the canal on the downstream of the head regulator
(b)

in the river on the downstream of the weir
(c)

in the river adjacent to the head regulator
(d)

in the river far off from the weir on the upstream side
Answer:

Option (c)

Showing 21 to 30 out of 49 Questions
1 2 3 4 5