GATE (CE) 2021: HYDROLOGY AND IRRIGATION REVISION QUIZ 11 (App update required to attempt this test) for ESE & GATE CE Exams

Question 1

The intensity of irrigation means

Question 2

Canal normally used for diversion of flood water of a river is ______.

Question 3

A groyne pointing upstream is known as:

Question 4

Pick up the correct statement from the following ________.

Question 5

The state of the soil when plants fail to extract sufficient water for their requirements is _____.

Question 6

A sandy loam soil has a water holding capacity of 140 mm/m between field capacity and wilting point. The area to be irrigated is 60 ha and depth of effective root zone is 0.30 m. The management allowed soil moisture depletion as 40% and the consumptive use is 6 mm/day. The conveyance and application efficiency are obtained to be 80% and 50% respectively. There are no leaching requirements as well as no rainfall and ground water contributions to the crop water requirement. The frequency of irrigation (in days) and the field irrigation requirement (in m³) will be

Question 7

The base width of an elementary profile of a gravity dam of height H is be. The specific gravity of the material of the dam in G and uplift pressure coefficient is K. The correct relationship for no tension at the heel is given by

Question 8

The hydraulic radius (in m) of a standard trapezoidal lined canal with 1.25 H: 1V side slopes, 12 m bed width and 2 m water depth is

Question 9

A stable channel having trapezoidal section with side slope 0.5 H: 1V carries discharge of 60m³/sec. Determine the channel’s bottom width if the depth of flow is 2.5m and the critical velocity ratio is 1.15.

Question 10

In the design of impervious apron by Khosla’s theory for weirs, the horizontal length of the apron is founded by the consideration of

Question 11

In a sub surface drainage system, circular tile drains flowing full are laid with a slope of 0.28% to carry a peak discharge of 3 l/s per drain. If Manning's constant (n) is 0.011, then the practical hydraulic radius of tile drain (in mm) required is

Question 12

The field capacity of a soil for the following data is ________%.
Root zone depth = 2 m
Existing water content = 5%
Dry density of soil = 15 kN/m³
Water applied to the soil = 500 m³
Water lost due to evaporation and deep percolation = 10%
Area of plot = 1000 m²

Question 13

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

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

Question 14

Under which one of the following categories is the river Ganga classified in the reach through UP and Bihar?

Question 15

A field channel has cultivable commanded area of 2000 hectares. The intensities of irrigation for gram and wheat are 30% and 50% respectively. Gram has a kor period of 18 days, kor depth of 12 cm, while wheat has a kor period of 18 days and a kor depth of 15 cm. The discharge (in m³/s) required in the field channel to supply water to the commanded area during the kor period is_____.