GATE CE topic:irrigation PYQs & Answers — Page 2

Questions 11–20 of 21. Imported answers require independent review unless marked reviewed.

A pump with an efficiency of 80% is used to draw groundwater from a well for irrigating a flat field of area 108 hectares. The base period and delta for paddy crop on this field are 120 days and 144 cm, respectively. Water application efficiency in the field is 80%. The lowest level of water in the well is 10 m below the ground. The minimum required horse power (h.p.) of the pump is __________. (round off to two decimal places) (Consider 1 h.p. = 746 W; unit weight of water = 9810 N/m

)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A reservoir with a live storage of 300 million cubic metre irrigates 4000 hectares (1 hectare = 10

) of a crop with two fillings of the reservoir. If the base period of the crop is 120 days, the duty for this crop (in hectares per cumec, round off to integer) will then be

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Superpassage is a canal cross-drainage structure in which

Your answerChoose one option.

natural stream water flows with free surface below a canal

natural stream water flows under pressure below a canal

canal water flows with free surface below a natural stream

canal water flows under pressure below a natural stream

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The data for an agricultural field for a specific month are given below:

Pan Evaporation = 100 mm Effective Rainfall = 20 mm (after deducting losses due to runoff and deep percolation) Crop Coefficient = 0.4 Irrigation Efficiency = 0.5

The amount of irrigation water (in mm) to be applied to the field in that month, is

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Crops are grown in a field having soil, which has field capacity of 30% and permanent wilting point of 13%. The effective depth of root zone is 80 cm. Irrigation water is supplied when the average soil moisture drops to 20%. Consider density of the soil as 1500 kg/m³ and density of water as 1000 kg/m³. If the daily consumptive use of water for the crops is 2 mm, the frequency of irrigating the crops (in days), is

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

If the path of an irrigation canal is below the bed level of a natural stream, the type of cross-drainage structure provided is

Your answerChoose one option.

Aqueduct

Level crossing

Sluice gate

Super passage

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The command area of a canal grows only one crop, i.e., wheat. The base period of wheat is 120 days and its total water requirement,

, is 40

. If the canal discharge is 2

, the area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all losses) is ______

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A 1:50 model of a spillway is to be tested in the laboratory. The discharge in the prototype spillway is 100 m

/s. The corresponding discharge (in m

/s, up to two decimal places) to be maintained in the model, neglecting variation in acceleration due to gravity, is ______

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The intensity of irrigation for the Kharif season is 50% for an irrigation project with culturable command area of 50,000 hectares. The duty for the Kharif season is 1000 hectare/cumec. Assuming transmission loss of 10%, the required discharge (in cusec, up to two decimal places) at the head of the canal is _____

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Group I contains three broad classes of irrigation supply canal outlets. Group II presents hydraulic performance attributes.

Group I | Group II P. Non-modular outlet | 1. Outlet discharge depends on the water levels in both the supply canal as well as the receiving water course Q. Semi-modular outlet | 2. Outlet discharge is fixed and is independent of the water levels in both the supply canal as well as the receiving water course R. Modular outlet | 3. Outlet discharge depends only on the water level in the supply canal

The correct match of the items in Group I with the items in Group II is

Your answerChoose one option.

P - 1; Q - 2; R - 3

P - 3; Q - 1; R - 2

P - 2; Q - 3; R - 1

P - 1; Q - 3; R - 2

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE CE topic:irrigation PYQs

Question 57

Question 50

Question 13

Question 15

Question 36

Question 14

Question 24

Question 22

Question 24

Question 30