Irrigation Engineering MCQ Questions & Answers

21

Trap efficiency of a reservoir is a function of

A) capacity/inflow ratio B) capacity/outflow ratio C) outflow/inflow ratio D) none of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

22

Seepage through embankments in an earthen dam is controlled by

A) drainage filters B) relief wells C) drain trenches D) provision of downstream berms

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

23

A river is said to be of

A) Aggrading type if it builds up its bed to a certain slope B) Degrading type if it cuts its bed to a certain slope C) Meandering type if it flows in sinuous curve D) All the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

24

An artesian aquifer is the one where

A) water surface under the ground is at atmospheric pressure B) water is under pressure between two impervious strata C) water table serves as upper surface of zone of saturation D) none of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

25

For a unique design of a channel by Kennedy's theory

A) Its breadth must only be known B) Its depth must only be known C) Its breadth and depth ratio must only be known D) All the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

26

The scour depth D of a river during flood, may be calculated from the Lacey's equation

A) D = 0.47 $$\left( {\frac{{\text{Q}}}{{\text{f}}}} \right)$$ B) D = 0.47 $${\left( {\frac{{\text{Q}}}{{\text{f}}}} \right)^{\frac{1}{2}}}$$ C) D = 0.47 $${\left( {\frac{{\text{Q}}}{{\text{f}}}} \right)^{\frac{1}{3}}}$$ D) D = 0.47 $${\left( {\frac{{\text{Q}}}{{\text{f}}}} \right)^{\frac{2}{3}}}$$

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

27

Unit of runoff in M.K.S. system is

A) cubic metre/sec B) metre/sec C) cubic metre D) square metre

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

28

Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation ?

A) flat water surface B) convex water surface C) concave water surface D) independent of shape of water surface

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

29

The main cause of meandering is

A) presence of an excessive bed slope in the river B) degradation C) the extra turbulence generated by the excess of river sediment during floods D) none of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

30

According to Kennedy, the critical velocity (V₀) in meters in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel).

A) V₀ = 0.84 mD^0.64 B) V₀ = 0.55 mD^0.64 C) V₀ = 0.84 mD^0.54 D) V₀ = 0.55 mD^0.54

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Irrigation Engineering MCQ Questions & Answers | Civil Engineering