Irrigation Engineering Mcqs

Practice Quiz On Irrigation Engineering Mcqs

30 Marks

1 / 30

The intensity of irrigation means

Percentage of culturable commanded area to be irrigated annually

Percentage of gross commanded area to be irrigated annually

Percentage of the mean of culturable commanded area and the gross commanded area to be irrigated annually

Total depth of water supplied by the number of waterings

2 / 30

What is water conveyance efficiency?

The ratio of water used beneficially and the water delivered to the field

The ratio of water stored in the root zone and the water delivered to the field

The ratio of the quantity of water delivered to the field and quantity of water pumped into the canal

The ratio of water stored in the root zone and the water needed before irrigation

3 / 30

A river training work is generally required when the river is

Meandering

Aggrading

Degrading

All the above

4 / 30

The depth of rice root zone, is

50 cm

60 cm

80 cm

90 cm

5 / 30

Which factor doesn’t influence the root zone depth?

Type of soil

Type of crops grown

Sub-soil formation

The yield of the crop

6 / 30

Borrow pits should preferably be located in

Field on the left side of the canal

Field on the right side of the canal

Fields on both sides of the canal

Central half width of the section of the canal

7 / 30

Bed bars in a canal are provided

To watch the general behavior of canal

To measure the discharge

To raise the supply level

To control the silting

8 / 30

A deficit of sediments in flowing water may cause a river

Meandering type

Aggrading type

Degrading type

Sub-critical type

9 / 30

Useful soil moisture for plant growth, is

Gravity water

Capillary water

Hygroscopic water

Chemical water

10 / 30

Which of the following CD works carry drainage over the canal?

Aqueduct and Syphon Aqueduct

Super passage and Syphon

Level-crossing and inlets outlets

Canal Syphon and Aqueduct

11 / 30

Irrigation canals are generally aligned along

Contour line

Valley line

Straight line

Ridge line

12 / 30

Which of the following is the other name of perennial irrigation system?

Flood Irrigation

Controlled Irrigation

Direct Irrigation

Storage Irrigation

13 / 30

The main function of a diversion head works of a canal from a river, is

To remove silt

To control floods

To store water

To raise water level

14 / 30

What is the Annual Intensity of irrigation (AII)?

Cultivable Command Area/Gross Irrigated Area

Net Irrigated Area/Cultivable Command Area

Cultivable Command Area/Net Irrigated Area

Gross Irrigated Area/Cultivable Command Area

15 / 30

Which one below is an example of the overlapping crop?

Tobacco

Wheat

Millets

Sugarcane

16 / 30

If water table is comparatively high, the irrigation canal becomes useless, due to

Large amount of seepage

Water logging of the cultivated areas

Uncertain water demand

All the above

17 / 30

At which point in the entire canal system the duty of water will be more?

Head of the Water-course

Head of the Minor

Head of the Distributary

Head of the Branch

18 / 30

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

6 cumecs

10 cumecs

14 cumecs

20 cumecs

19 / 30

In a canal syphon, the flow is

Under atmospheric pressure

Pipe flow

With critical velocity

Under negative pressure

20 / 30

What is the time interval between two consecutive watering called?

Crop Period

Period

Base Period

Rotation Period

21 / 30

The ratio of the rate of change of discharge of an outlet and parent channel, is known as

Efficiency

Sensitivity

Flexibility

Modular limit

22 / 30

An irrigation project is classified as a major project when the CCA involved in the project is more than ______

2500 hectares

10000 hectares

2000 hectares

5000 hectares

23 / 30

The first watering before sowing the crop is

paleo

kor

delta

flooding

24 / 30

Cross regulators in main canals are provided

To regulate water supply in the distributaries

To increase water head upstream when a main canal is running with low supplies

To overflow excessive flow water

None of these

25 / 30

In Montague type fall

A straight glacis is provided

A circular glacis is provided

A parabolic glacis is provided

No glacis is provided

26 / 30

The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called

Syphon

Super passage

Super-aqueduct

Syphon aqueduct

27 / 30

In a barrage, the crest level is kept

Low with large gates

High with large gates

High with no gates

Low with no gates

28 / 30

Process of meandering is due to

Sediment load of streams

Discharge and hydraulic properties of streams

Relative erodibility of the bed and banks

All the above

29 / 30

What is the crop ratio of Kharif to rabi crops?

2:1

1:2

1:3

3:1

30 / 30

In which of the following types of irrigation systems hydroelectric power can be generated?

Storage Irrigation

Perennial Irrigation

Flood Irrigation

Lift Irrigation

Your score is

The depth of rice root zone, is

A) 50 cm

B) 60 cm

C) 80 cm

D) 90 cm

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

A) Percentage of culturable commanded area to be irrigated annually

The main function of a diversion head works of a canal from a river, is

A) To remove silt

B) To control floods

C) To store water

D) To raise water level

Useful soil moisture for plant growth, is

A) Gravity water

B) Capillary water

C) Hygroscopic water

D) Chemical water

B) Capillary water

A river training work is generally required when the river is

A) Meandering

B) Aggrading

C) Degrading

D) All the above

A) Meandering

Which of the following is the other name of perennial irrigation system?

A) Flood Irrigation

B) Controlled Irrigation

C) Direct Irrigation

D) Storage Irrigation

B) Controlled Irrigation

What is the Annual Intensity of irrigation (AII)?

A) Cultivable Command Area/Gross Irrigated Area

B) Net Irrigated Area/Cultivable Command Area

C) Cultivable Command Area/Net Irrigated Area

D) Gross Irrigated Area/Cultivable Command Area

An irrigation project is classified as a major project when the CCA involved in the project is more than ______

A) 2500 hectares

B) 10000 hectares

C) 2000 hectares

D) 5000 hectares

B) 10000 hectares

In which of the following types of irrigation systems hydroelectric power can be generated?

A) Storage Irrigation

B) Perennial Irrigation

C) Flood Irrigation

D) Lift Irrigation

A) Storage Irrigation

The first watering before sowing the crop is

A) paleo

B) kor

C) delta

D) flooding

A) paleo

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