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GATE CE 2020: Hydrology & Irrigation Quiz 7

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Question 1

The first watering which is given to a crop is called

Question 2

Following data are given:
1. Available moisture holding capacity of soil=12.5cm/m depth of soil
2. Root zone depth of crop=0.8m
3. Consumptive use=5mm/day
If moisture depletion is allowed to 50% of available moisture then the frequency of irrigation will be ___days.

Question 3

A rice crop is to be irrigated in a field covering an area of 2400 ha, the duty and base period of rice are given as 860 ha/cumec and 120 days respectively. The volume of water required in the field is nearly:

Question 4

The moisture tension for a soil is 8 atmospheres. The soil is then at

Question 5

Wheat crop requires 55 cm of water during 120 days of base period. The total rainfall during this period is 100 mm. Assume the irrigation efficiency to be 60%. The area (in ha) of the land which can be irrigated with a canal flow of 0.01 m³/s is

Question 6

Consider the following statements:
Irrigation water has to be supplied to the crops when the moisture level falls
1). below field level capacity
2). below OMC
3). below wilting point
Which of these statements is/are correct?

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ESE & GATE CE Irrigation Engineering

Feb 4ESE & GATE CE