Irrigation - Section 1

Directions to Solve

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.

For a given discharge in a channel, Blench curves give the relationship between the loss of head (HL) and

A.	specific energy up-stream
B.	specific energy down-stream
C.	critical depth of water down-stream
D.	depth of water down-stream

Answer: Option B

Explanation:

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Pick up the incorrect statement from the following

A.	A bank in the cross-section of a canal is provided on the right
B.	A bank in the cross-section of a canal is provided on the left
C.	A 'dowla' in the cross-section of a canal is provided on the left
D.	None of these.

Answer: Option B

Explanation:

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Water-shed line is abondened for aligning an irrigation canal if

A.	water shed forms a sharp loop
B.	canal has to take off from a river
C.	towns and villages are located on the water shed line
D.	all the above.

Answer: Option D

Explanation:

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Pick up the correct statement from the following:

A.	Duty of canal water is defined as the total area irrigated by the discharge averaging one unit during the base period of the duty
B.	Duty of canal water is usually calculated at the head discharge of a channel
C.	Duty of canal water at the head of a channel and at the outlet of a distributary, differ considerably due to progressive losses of water
D.	Duty of canal water at the outlet of a distributary, is generally known as outlet factor or outlet discharge factor
E.	All the above.

Answer: Option E

Explanation:

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Pick up the correct statement from the following:

A.	If the flexibility is more than one, the outlet is hyper-proportional
B.	If the setting of an outlet is higher than that required for proportionality, the outlet is hyper-proportional
C.	If the setting of an outlet is lower than that required for proportionality, the outlet is sub-proportional
D.	If the flexibility is zero, it is a rigid module
E.	All the above.

Answer: Option E

Explanation:

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For loss of head in a canal inverted syphon barrel, the factor in the Unwin formula 22-15-123-1 is a coefficient for loss of head due to

A.	friction
B.	exit
C.	entry
D.	gradient

Answer: Option C

Explanation:

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A river training work is generally required when the river is

A.	meandering
B.	aggrading
C.	degrading
D.	all the above.

Answer: Option A

Explanation:

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If q is the discharge per unit width of a channel and D₁ D₂ are the depths of water before and after hydraulic jump, the following relationship is true

A.
B.
C.
D.

Answer: Option C

Explanation:

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Irrigation - Section 1

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