Irrigation - Section 1 (2)

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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.

9.

The discharge over a trapezoidal crest of a Sarda fall with free over fall conditions, is

A.	0.45 √2g . LH3/2 (H/B)1/3
B.	0.45 √2g . LH2/3 (H/B)2/3
C.	0.45 √2g . LH3/2 (H/B)1/6
D.	0.45 √2g . LH1/6 (H/B)3/2

Answer: Option C

Explanation:

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10.

The depth of the crest of a scouring sluice below the crest of a head regulator, is generally kept

A.	0.20 m
B.	1.20 m
C.	2.20 m
D.	3.20 m
E.	4.90 m

Answer: Option B

Explanation:

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11.

The saturation line is the line up to which banks get saturated after the canal runs for some time. The saturation gradient in ordinary loam soil, is generally

A.	2 : 1
B.	3 : 1
C.	4 : 1
D.	5 : 1
E.	6 : 1

Answer: Option C

Explanation:

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12.

The intensity of irrigation means

A.	percentage of culturable commanded area to be irrigated annually
B.	percentage of gross commanded area to be irrigated annually
C.	percentage of the mean of culturable commanded area and the gross commanded area to be irrigated annually
D.	total depth of water supplied by the number of waterings.

Answer: Option A

Explanation:

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13.

The depth of rice root zone, is

A.	50 cm
B.	60 cm
C.	70 cm
D.	80 cm
E.	90 cm

Answer: Option E

Explanation:

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14.

The crest level of a canal diversion head work, depends upon

A.	F.S.L. of the canal
B.	discharge perimeters
C.	pond level
D.	all the above
E.	none these.

Answer: Option D

Explanation:

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15.

If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the perimeter of the canal is

A.	R(θ + tan θ)
B.	2R(θ + tan θ)
C.	R(θ + cos θ)
D.	2R(θ + cos θ)
E.	none of these.

Answer: Option D

Explanation:

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16.

For the conditions enumerated to provide a crossing at C1 You will probably provide

A.	an aqueduct
B.	a super-passage
C.	a syphon aqueduct
D.	none of these.

Answer: Option B

Explanation:

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