Irrigation Objective Type Question and Answers
Irrigation Objective Type Question and Answers
Irrigation Objective Type Question and Answers
a) Modernization
b) Rehabilitation
c) water management
d) optimization
a. Maintenance
b. Protection
c. Performance
d. water management
3. The process of delivering desired land slope in the direction of irrigation by changing natural land
slope called as
a. land levelling
b. land smoothing
c. Land grading
d. land sliding
4. The process of making the most effective use of water in minimal situation.
a. Rehabilitation
b. modernization
c. optimization
d. PIM
5. Which instrument used to determine watering duration and frequencies on a daily basic based on
the real time weather condition?
a. Pressure regulation
b. Smart controllers
c. Control structure
d. Convert to drip irrigation
6. The process of developing surface relief of the land to a planned grade to provide better aeration
and efficient water application on farm
a. land levelling
b. land smoothing
c. Land grading
d. land forming
a. Rehabilitation
b. modernization
c. optimization
d. PIM
9. The process of giving zero slope in the direction of irrigation as as well as in cross direction.
a. land levelling
b. land smoothing
c. Land grading
d. land forming
a. air losses
b. water surface evaporation
c. deep percolation
d. all of the above
11. The items of works pertaining to on form water management are termed as
a. air losses
b. water surface evaporation
c. deep percolation
d. canopy losses
a. efficiency
b. yield
c. output
d. performance
canal regulations - direct sluice - canal drop - cross drainage works-canal outlets - design of
prismatic canal-canal alignments-canal lining - kennedy s and lacey s regime theory-design
of unlined canal
5. Which of the following Cross Drainage works carry drainage over the canal?
a) Aqueduct and Syphon Aqueduct
b) Super passage and Syphon
c) Level-crossing and inlets outlets
d) Canal Syphon and Aqueduct
6. The crossing arrangement preferably made at the junction of a huge canal and a river stream
carrying a short-lived high flood discharge at almost equal bed levels is a __________
a) Super passage
b) Aqueduct
c) Level crossing
d) Canal syphon
a) Ogee Fall
b) Trapezoidal Notch Fall
c) Simple Vertical Drop Type Fall
d) Straight Glacis Fall
10. What type of major dangers can the lining of canals extinguish?
a) Leakages
b) Floods
c) Water-logging
d) Seepage Losse
11. What is the range of value of Manning’s coefficient for straight alignment for cast in-situ
concrete lining?
a) 0.012 – 0.015
b) 0.015 – 0.018
c) 0.018 – 0.020
d) 0.020 – 0.025
12. A flexible membrane impregnated with tar or bitumen is spread over the subgrade in
_________________
a) Asphalt lining
b) Soil-cement lining
c) Cement mortar lining
d) Puddle clay lining
13. According to Lacey what factor is needed to have a true regime in an artificial channel?
a) Flow is Uniform
b) Critical Velocity = Actual Velocity
c) No Silting or Scouring Action
d) Lining of the Channel Bed
15. A velocity which will just keep the silt in suspension, without scouring the channel is known
as………..
a. Design velocity
c. flow Velocity
d. Theoretical velocity
19. A cross-drainage work is called a super passage, when it carries the canal water:
20. The drainage water is sometimes allowed to join the canal water to augment canal supplies,
through a hydraulic structure, called:
(c) module
of impounding structures - gravity dam - forces on a dam -design of gravity dams; earth
dams, arch dams- diversion head works - weirs and barrages-
a) Earth
b) Buttress
c) Gravity
d) Arch
6. ___________ is the arrangement made near top of dam for passage of excess water from the
reservoir.
a) Sluice way
b) Spillway
c) Gallery
d) Abutments
7. For full reservoir condition in a gravity dam, the critical combination of vertical and horizontal
earthquake accelerations to be considered for checking the stability is
________________________
a) Vertically upward and horizontally downstream
b) Vertically downward and horizontally downstream
c) Vertically upward and horizontally upstream
d) Vertically downward and horizontally upstream
10. Which of the following forces is the least important in the design of arch dams?
a) Reservoir water force
b) Uplift pressure
c) Temperature stresses
d) Ice load
e) Yield stresses
11. Which of the following theory is the most accurate method to design arch?
a) The thin cylinder theory
b) The theory of elastic arches
c) The trial load method
d) Creep theory
a) Divide Wall
b) Plan of Fish Ladder
c) Scouring Sluices
d) Canal Head Regulator
14. What device is placed in front of head regulator for silt removal?
a) Weir
b) Silt Extractor
c) Silt Excluder
d) Barrage
16. Which one among the following is a correct choice in relation to a weir?
(b) It does not cause any heading up of water on its upstream side
22. The gated regulator, which is constructed in the parent canal near the site of an off taking
Canal, is called a:
(a) The same as the upstream bed level of the parent canal
(b) The same as the crest level of the cross-regulator.
(c) 0.3 to 1 m higher than the upstream bed level of the parent canal
(d) None of the above.
ONLINE TEST 4
need and classification of irrigation- historical development and merits and demerits of
irrigation-types of crops-crop season-duty, delta and base period- consumptive use of crops-
estimation of evapotranspiration using experimental and theoretical methods
4. In which of the following types of irrigation water is supplied to the crops throughout
their crop period?
a) Perennial Irrigation
b) Flood Irrigation
c) Direct Irrigation
d) Storage Irrigation
a) Direct Irrigation
b) Storage Irrigation
c) Lift Irrigation
d) Flow Irrigation
10. What is the time interval between sowing and harvesting of crops?
a) Base period
b) Kor period
c) Crop period
d) Season period
11. The first watering before sowing the crop is ________
a) Paleo
b) Kor
c) Delta
d) Flooding
12. What is called as the percentage of C.C.A irrigated at a time in one crop season?
a) Gross Command Area
b) Culturable cultivated area
c) Culturable uncultivated area
d) Intensity of irrigation
13. What is total depth of water, for complete growth of crop called?
a) Triangle
b) Delta
c) Duty of Water
d) Rotation Period
14. Which type of period is slightly more than its counterpart period?
a) Crop Period
b) Period
c) Base Period
d) Rotation Period
15. Which type of units is used to define high and low duty?
a) Hectare-meters
b) Hectares/cumec
c) Meters
d) Centimeters
16. Given that, a particular irrigation field has C.C.A as 200 hectares, out which 150
hectares of land is cultivated for rabi season and 100 hectares of land is cultivated for
kharif season. What is the intensity of irrigation for each season?
a) 50%, 100%
b) 120%, 60%
c) 75%, 50%
d) 150%, 75%
16. It is said that a particular type of crop requires a depth of 6 cm of water every 24
days and the crop period is 168 days. Find the delta of the crop?
a) 50 cm
b) 42 cm
c) 20 cm
d) 95 cm
a. 190 mm
b. 215 mm
c. 135 mm
d. 165 mm
19. The ratio of the quantity of water stored in the root zone of the crops to the
quantity of water actually delivered in the field is known as
20 Kor period is less for humid climates and more for dry climates.
a) True
b) False
24. What are the climatic conditions required for growing rice?
a) Fertile clay soil, 70-200 cm rainfall, temperature 20˚C-27˚C
b) Fertile soil, 50-75 cm rainfall, temperature 20˚C-25˚C
c) Nitrogen-rich soil, 50-80 cm rainfall, temperature 25˚C-30˚C
d) Sulfur-rich soil, 150-200 cm rainfall, temperature 15˚C-20˚C
Tank irrigation - well irrigation - irrigation methods: surface and sub-surface and micro
irrigation - design of drip and sprinkler irrigation - ridge and furrow irrigation-irrigation
scheduling - water distribution system- irrigation efficiencies