Introduction to Irrigation and Hydrology
1. Tube wells are not used in:
a. Rajasthan
b. UP
c. Haryana
d. Gujarat.
2. Micro-irrigation is also called:
a. Flood irrigation
b. Localized irrigation
c. Petite irrigation
d. Nano irrigation.
3. Spate irrigation is a special form of irrigation using surface water.
a. True
b. False.
4. Fertigation is a process in irrigation.
a. Centre pivot
b. Sprinkler
c. Surface
d. Drip.
5. Water for irrigation can come from sources.
a. 3
b. 2
c. 4
d. 5.
6. Sub-irrigation is used in areas with:
a. Sloping terrain
b. Flat terrain
c. Low water Table
d. High water Table.
7. The field water efficiency of trickle irrigation is:
a. 80-90%
b. 50-60%
c. 60-70%
d. 70-80%.
8. Tank water irrigation system is common in:
a. Madhya pradesh
b. Himachal pradesh
c. Uttar pradesh
d. Andhra pradesh
9. Surface irrigation is again subdivided into:
a. 2
b. 3
c. 6
d. 8
10. is a form of overhead irrigation.
a. Terraced irrigation
b. Drip irrigation
c. Sprinkler irrigation
d. Centre pivot irrigation
11. The % of earth covered by oceans is about a. 80%
b. 75%
c. 72%
d. 71%
12. The average annual rainfall over the whole of India is estimated as
a. 89 cm
b. 189 cm
c. 119 cm
d. 319 cm
13. The percentage of total quantity of water in the world that is saline is about
a. 87%
b. 97%
c. 77%
d. None
14. A rainfall with an intensity of 5 mm/h is classified as
a. Heavy rain
b. Light rain
c. Moderate rain
d. None of the above
15. Inundation irrigation system is functional all through the year.
a. True
b. False
16. Which is the odd one in the following ?
a. Hail
b. Rain
c. Snow
d. Sleet
17. A plot between rainfall intensity versus time is called as
a. Mass curve
b. Hydrograph
c. Isohyets
d. Hyetograph
18. Wind speed is measured with
a. Anemometer
b. A helimometers
c. A wind vane
d. Stevenson box
19. The average pan coefficient for the standard US Weather Bureau class A pan is
a. 0.80
b. 0.90
c. 0.70
d. 0.6.
20. Lysimeter is used to measure
a. Infiltration
b. Vapour pressure
c. Evapotranspiration
d. Evaporation
21. The science and practice of water flow measurement is known as hydrometry.
a. True
b. False
22. Calibration of a current meter for use, in channel flow measurement is done in a
a. Towing tank
b. Water tunnel
c. Wind tunnel
d. Flume
23. A hydrograph is a plot of
a. Rainfall intensity against time
b. Community rainfall against time
c. Stream discharge against time
d. None of Above
24. A unit hydrograph has
a. One unit of direct runoff
b. One unit of rainfall duration
c. One unit of peak discharge
d. None of above
25. Which of the following equation is used in hydrological flood routing ?
a. Continuity equation
b. Energy equation
c. Equation of motion
d. both a and c
26. The flow-mass curve is an integral curve of
a. The hydrograph
b. The hyetograph
c. The flow duration curve
d. The S-Curve
27. The use of rational formula for estimating floods is limited to catchments of size less than
a. 7 KM2
b. 6 KM2
c. 50 KM2
d. 8 KM2
28. In the Muskingum method of channel routing the weighing factor x can have a value between 0.0 to 0.5.
a. True
b. False
29. When an accumulated mass of snow melts, the resulting flow entering a stream is classified as direct runoff.
a. True
b. False
30. Probability of a 10 year flood to occur at least once in the next 4 year is 35%.
a. False
b. True
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