Irrigation Engineering MCQ Questions & Answers

91

The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by

A) 4RS B) 11RS C) 7RS D) 15 RS

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Answer & Solution

Answer: Option B

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92

The optimum depth of kor watering for a rice crop, is

A) 23.0 cm B) 19.0 cm C) 17.5 cm D) 13.5 cm

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Answer & Solution

Answer: Option B

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93

Generally the weir is aligned at right angles to the direction of the main river current because

A) It ensures less length of the weir B) It gives better discharging capacity C) It is economical D) All of the above

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Answer & Solution

Answer: Option D

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94

In a Sarda type fall, the rectangular crest, may be used for discharge up to

A) 6 cumecs B) 10 cumecs C) 14 cumecs D) 20 cumecs

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Answer & Solution

Answer: Option C

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95

The meander pattern of a river is developed by

A) Average discharge B) Dominant discharge C) Maximum discharge D) Critical discharge

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Answer & Solution

Answer: Option B

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96

Pick up the correct statement from the following

A) Approach of the water line in a flumed channel section should not be steeper than $$22{\frac{1}{2}^ \circ }$$ B) Departure of the water line from a flumed channel section should not be steeper than 30° C) Approach of the water line should not be steeper than 30° and departure line not steeper than $$22{\frac{1}{2}^ \circ }$$ in a flumed channel section D) Approach and departure of the water line in a flumed channel section, should not be steeper than $$22{\frac{1}{2}^ \circ }$$

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Answer & Solution

Answer: Option C

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97

The sinuosity of a meander is the ratio of

A) Meander length and the width of meander B) Meander length and half width of the river C) Curved length and the straight distance D) None of these

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Answer & Solution

Answer: Option C

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98

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)

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Answer & Solution

Answer: Option D

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99

An aggrading river is a

A) silting river B) scouring river C) both silting and scouring river D) neither silting nor scouring river

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Answer & Solution

Answer: Option A

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100

The shape of recession limb of a hydrograph depends upon

A) Basin characteristics only B) Storm characteristics only C) Both (A) and (B) D) None of the above

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Answer & Solution

Answer: Option A

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Irrigation Engineering MCQ Questions & Answers | Civil Engineering