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Test: Hydrology & Irrigation- 2


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20 Questions MCQ Test GATE Civil Engineering (CE) 2023 Mock Test Series | Test: Hydrology & Irrigation- 2

Test: Hydrology & Irrigation- 2 for GATE 2022 is part of GATE Civil Engineering (CE) 2023 Mock Test Series preparation. The Test: Hydrology & Irrigation- 2 questions and answers have been prepared according to the GATE exam syllabus.The Test: Hydrology & Irrigation- 2 MCQs are made for GATE 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Hydrology & Irrigation- 2 below.
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Test: Hydrology & Irrigation- 2 - Question 1

The slope-area method is extensively used in:

Test: Hydrology & Irrigation- 2 - Question 2

Instantaneous unit hydrograph is a hydrograph of

Test: Hydrology & Irrigation- 2 - Question 3

In a linear reservoir, the

Test: Hydrology & Irrigation- 2 - Question 4

Mukingum’s method for the routing of flood

Test: Hydrology & Irrigation- 2 - Question 5

A lysimeter is used to measure

Test: Hydrology & Irrigation- 2 - Question 6

Lysimeter and Tensiometer are used to measure, respectively, one of the following groups of quantities:  

Test: Hydrology & Irrigation- 2 - Question 7

If the discharge required for different crops is 0.4 cumecs in the field and the capacity factor and time factors are 0.8 and 0.5, respectively, then what is the design discharge of the distributary at its head?

Detailed Solution for Test: Hydrology & Irrigation- 2 - Question 7

Test: Hydrology & Irrigation- 2 - Question 8

In a canal irrigation project, 76% of the culturbale command area (CCA) remained without water during Kharif season; and 58% of CCA remained without water during Rabin season in a particular year. Rest of the areas got irrigated in each crop, respectively. What is the intensity of irrigation for the project in the year?

Detailed Solution for Test: Hydrology & Irrigation- 2 - Question 8

Test: Hydrology & Irrigation- 2 - Question 9

The wave height, in meters, generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h is 

Detailed Solution for Test: Hydrology & Irrigation- 2 - Question 9

Test: Hydrology & Irrigation- 2 - Question 10

An identified source of irrigation water has ion concentrations of Na+, Ca++, and Mg++ as 20, 10, and 8 mEq/L (milliequivalent per liter), respectively. The sodium absorption ratio (SAR) of this water is approximately

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Test: Hydrology & Irrigation- 2 - Question 11

A canal was designed to supply irrigation needs of 1200 ha of land growing rice of 140 days base period having a delta of 134 cm. If this canal water is used to irrigate wheat of base period 120 days having delta of 52 cm, the area (in ha) that can be irrigated is 

Detailed Solution for Test: Hydrology & Irrigation- 2 - Question 11

Test: Hydrology & Irrigation- 2 - Question 12

What is the moisture depth available for evapotranspiration in root zone of 1 m depth soil, if dry weight of soil is 1.5 g/cm3, field capacity is 30%, and permanent wilting point is 10%? A. 450 mm B. 300 mm C. 200 mm D. 150 mm

Detailed Solution for Test: Hydrology & Irrigation- 2 - Question 12

*Answer can only contain numeric values
Test: Hydrology & Irrigation- 2 - Question 13

During a particular stage of the growth of a crop, consumptive use of water is 2.8 mm/day. If the amount of water available in the soil is 25% of 80 mm depth of water, the frequency of irrigation is ________ days.


Detailed Solution for Test: Hydrology & Irrigation- 2 - Question 13

*Answer can only contain numeric values
Test: Hydrology & Irrigation- 2 - Question 14

The maximum height of a low gravity dam of elementary profile made of concrete of relative density 2.5 and safe allowable stress of foundation material 3.87 MPa without considering the uplift force is about _________ m.


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Test: Hydrology & Irrigation- 2 - Question 15

A 252 km2 catchment area has a 6-h unit hydrograph which is a triangle with time base of 35 h. What is the peak discharge of the DRH due to 5 cm effective rainfall in 6 h from that catchment?  

Test: Hydrology & Irrigation- 2 - Question 16

The time of concentration at the outlet in an urban catchment area of 1.5 km2 with a runoff coefficient of 0.42 is 28 min. The maximum depth of rainfall with a 50 year return period for this time of concentration is 48 mm. What is the peak flow rate at the outlet for this return period?    

*Answer can only contain numeric values
Test: Hydrology & Irrigation- 2 - Question 17

A unit hydrograph for a watershed is triangular in shape with base period of 20 h. The area of the watershed is 500 ha. The peak discharge in m3/h is __________.


Test: Hydrology & Irrigation- 2 - Question 18

A channel of bed slope 0.0009 carries a discharge of 30 m3/s when the depth of flow is 1.0 m. What is the distance carried by an exactly similar channel at the same depth of flow if the slope is decreased to 0.0001?   

Test: Hydrology & Irrigation- 2 - Question 19

A field was supplied water from an irrigation tank at a rate of 120 L/s to irrigate an area of 2.5 ha. The duration of irrigation is 8 h. It was found that the actual delivery at the field, which is about 4 km from the tank, was 100 L/s. The runoff loss in the field was estimated as 800 m3. Then the application efficiency will be 

Test: Hydrology & Irrigation- 2 - Question 20

The following data were recorded from an irrigated field:

1. Field capacity: 20%

2. Permanent wilting point: 10%

3. Permissible depletion of available soil moisture: 50%

4. Dry unit weight of soil: 1500 kgf/m3

5. Effective rainfall: 25 mm

Based on these data, the net irrigation required per meter depth of soil will b

Detailed Solution for Test: Hydrology & Irrigation- 2 - Question 20

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