1
GATE CE 2010
MCQ (Single Correct Answer)
+2
-0.6
The moisture holding capacity of the soil in a 100 hectare farm is 18 cm/m. the field is to be irrigated when 50 percent of the available moisture in the root zone is depleted. The irrigation water is to be supplied by a pump working for 10hours a day, and water application efficiency is 75%. Details of crops planned for cultivation are as follows:
Crop Root zone depth (m) Peak rate of moisture use(mm/day)
X 1.0 5.0
Y 0.8 4.0
The area of crop Y that can be irrigated when the available capacity of irrigation system is 40 liters/sec is
A
40 hectares
B
36 hectares
C
30 hectares
D
27 hectares
2
GATE CE 2009
MCQ (Single Correct Answer)
+2
-0.6
An agricultural land of 437ha is to be irrigated for a particular crop. The base period of the crop is 90 days and the total depth of water required by the crop is 105cm. If a rainfall of 15cm occurs during the base period, the duty of irrigation water is
A
437ha/cumec
B
486ha/cumec
C
741ha/cumec
D
864ha/cumec
3
GATE CE 2007
MCQ (Single Correct Answer)
+2
-0.6
The culturable command area for a distributary channel is 20,000 hectares. Wheat grown in the entire area and the intensity of irrigation is 50%. The kor period for wheat is 30 days and the kor water depth is 120mm. The outlet discharge for the distributary should be
A
2.85 $$m^3/s$$
B
3.21 $$m^3/s$$
C
4.63 $$m^3/s$$
D
5.23 $$m^3/s$$
4
GATE CE 2000
MCQ (Single Correct Answer)
+2
-0.6
A tube well having a capacity of 4 $$m^3 /hour$$ operates for 20 hours each day during the irrigation season. How much area can be commanded if the irrigation interval is 20 days and depth of irrigation is 7 cm?
A
$$1.71\times10^4\;m^2$$
B
$$1.14\times10^4\;m^2$$
C
$$22.9\times10^4\;m^2$$
D
$$2.29\times10^4\;m^2$$
GATE CE Subjects
Fluid Mechanics and Hydraulic Machines
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