Irrigation - Section 1 (5)

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Irrigation - Section 1

Irrigation is a part of this engineering and we provide many MCQs to solve which
are related to this field. You can click on this section to get the questions.

33.

Pick up the incorrect statement from the following:

A.	In free flooding irrigation, water is admitted at one corner of a field and is allowed to spread over the entire area
B.	In check method of irrigation, the field is divided into smaller compartments and water is admitted to each in turn
C.	In furrow irrigation water is admitted between the rows of plants in the field
D.	None of these.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

34.

If L is total length of a canal in kilometres, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is

A.	1000 PLC
B.
C.
D.

Answer: Option A

Explanation:

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35.

For smooth entry of water in a canal, the angle between head regulator and water is generally kept

A.	80Â°
B.	90Â°
C.	110Â°
D.	120Â°

Answer: Option C

Explanation:

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36.

When a canal and a drainage approach each other at the same level, the structure so provided, is

A.	an aqueduct
B.	a syphon
C.	a level crossing
D.	inlet and outlet.

Answer: Option C

Explanation:

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37.

A water-logged land is found suitable for cultivation due to

A.	ease of tillage for preparation of the field for optimum condition of germination
B.	absence of aeration of soil from root zone of the plant
C.	regular supply of water to plants from the water table by capillary action
D.	none of these.

Answer: Option D

Explanation:

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38.

In a canal syphon, the flow is

A.	under atmospheric pressure
B.	pipe flow
C.	with critical velocity
D.	under negative pressure.

Answer: Option B

Explanation:

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39.

According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase

A.	rate of flood wave
B.	water surface elevation during floods
C.	maximum discharge
D.	velocity and scouring action
E.	surface slope of streams above the leveed portion.

Answer: Option E

Explanation:

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40.

Retrogression of the bed level of a river downstream a weir, occurs due to

A.	heavy impact of water
B.	increase of the bed level
C.	less percentage of silt
D.	soft soil strata.

Answer: Option C

Explanation:

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Irrigation - Section 1 (5)

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