AGRICULTURAL ENGINEERING- PAGE 3
AGRICULTURAL ENGINEERING MCQS
1. Unit of Drainage coefficient is
(a) kg (b) ton (c) cm (d) percent
Ans: C
2. Which of the following is not used for gully erosion control ?
(a) Check dams (b) Brush dams (c) Loose rock dams (d) High dams
Ans: D
3. Which of the following is not a mechanical method of erosion control ?
(a) Contour farming (b) Conservation tillage (c) Free cropping (d) Small dams
Ans: C
4. Which of the following is not a stage of gully development ?
(a) Zero stage (b) Formation stage (c) Development stage (d) Healing stage
Ans: A
5. Which of the following is not a permanent gully control structure ?
(a) Contour bund (b) Drop spillway (c) Permanent check dams (d) Drop (inlet) spillway
Ans: A
6. Which of the following is not a type of soil erosion due to water ?
(a) Raindrop erosion (b) Gully erosion (c) Final erosion (d) Sheet erosion
Ans: C
7. Which of the following is not a process of soil erosion ?
(a) Detachment of soil particles (b) Transportation of soil particles (c) Both of the above (d) Shining of soil particles
Ans: D
8. Which of the following is not a type of soil erosion ?
(a) Accelerated soil erosion (b) Geological soil erosion (c) Water erosion (d) Single erosion
Ans: D
9. Spacing of tile drains is generally kept as
(a) 1 – 2 m (b) 4 – 5 m (c) 9 – 60 m (d) 70 – 95 m
Ans: C
10. The depth of tile drains in uniformly permeable soil is kept as
(a) 0.25 to 0.5 m (b) 0.75 to 1.5 m (c) 2.0 to 3.5 m (d) 4.0 to 5.5 m
Ans: B
11. Which method should be used for irrigation in undulating fields ?
(a) Flooding method of irrigation (b) Furrow method of irrigation (c) Check basin method of irrigation (d) Sprinkler irrigation method
Ans: D
12. Which of the following is not a method of surface irrigation ?
(a) Free flooding irrigation (b) Border irrigation (c) Critical irrigation (d) Check basin irrigation
Ans: C
13. Which of the following is not a method of irrigation ?
(a) Drip irrigation (b) Accelerated irrigation (c) Sub-surface irrigation (d) Pitcher irrigation
Ans: B
14. Due to evaporation, the liquid water is transferred to
(a) atmosphere (b) river (c) pond (d) well
Ans: A
15. Over irrigation results in
(a) increasing crop yield (b) maintaining soil fertility (c) economic utilization of water (d) none of the above
Ans: D
16. Efficient irrigation to the crops will provide
(a) increased crop yield (b) increased water logging (c) increased salt accumulation (d) none of the above
Ans: A
17. Water conveyance efficiency is related to which of the following ?
(a) Water stored in the root zone (b) Water needed in the root zone (c) Uniformity of the water applied (d) None of the above
Ans: D
18. Water distribution efficiency indicates
(a) water supplied at source (b) water delivered at field (c) average depth of water stored during irrigation (d) none of the above
Ans: C
19. To which of the following the ‘duty’ of water is related ?
(a) Quantity of water used (b) Area to the irrigated (c) Height of crop (d) None of the above
Ans: B
20. The Lysimeter is used to determine
(a) Sun shine hours (b) Wind velocity (c) Flow velocity (d) Evapotranspiration
Ans: D
21. Discharge of water as vapour into atmosphere by leaves and stems of living plants is called
(a) evaporation (b) consumptive use (c) transpiration (d) none of the above
Ans: C
22. Evaporation pan is made of
(a) brass (b) cast iron (c) mild steel (d) none of the above
Ans: C
23. Diameter of a commonly used evaporation pan is
(a) 65 cm (b) 75 cm (c) 95 cm (d) 120 cm
Ans: D
24. Which of the following is not related to wind erosion ?
(a) Speed of wind (b) Age of the soil (c) Moisture content of soil (d) Texture of soil
Ans: B
25. Which of the following is not a drainage system ?
(a) Drip system (b) Surface system (c) Sub-surface system (d) All of the above
Ans: A
26. Which of the following is not a component of a drip irrigation system ?
(a) Head unit (b) Perforated pipe (c) Water conveyance and distribution pipes (d) Drippers
Ans: B
27. In which country the drip irrigation system was originally developed ?
(a) India (b) Pakistan (c) Israel (d) China
Ans: C
28. Which of the following is not a component of a sprinkler irrigation system ?
(a) Pump (b) Sprinkler nozzle (c) Main and lateral pipe lines (d) Drip nozzles
Ans: D
29. The rate of evaporation of water does not depend on
(a) temperature of water (b) temperature of air in contact with water (c) humidity of air (d) depth of water
Ans: D
30. Evaporation process is a _____ process.
(a) chemical (b) biological (c) physical (d) none of the above
Ans: C
31. Evaporation is the process of
(a) condensation (b) vaporization (c) conduction (d) radiation
Ans: B
32. Unit of ‘delta’ is
(a) cubic meter (b) square meter (c) hectare (d) meter
Ans: D
33. The water requirement of a crop is mainly estimated for
(a) crop planning on the farm (b) determining transpiration (c) determining water loss (d) none of the above
Ans: A
34. The depth of a commonly used evaporation pan is
(a) 20 cm (b) 50 cm (c) 100 cm (d) 150 cm
Ans: A
35. The permissible mean flow velocity in an earthen channel in sandy loam soil is
(a) 40 cm/sec (b) 60 cm/sec (c) 80 cm/sec (d) 100 cm/sec
Ans: B
36. A significant soil building crops group is
(a) cereal crops (b) leguminous crops (c) fodder crops (d) fruit crops
Ans: B
37. Border slope for clay to clay loam soils is kept generally
(a) 0.05 to 0.20 % (b) 0.20 to 0.40 % (c) 0.25 to 0.65 % (d) none of the above
Ans: A
38. The first step in planning a terrace system is the selection of
(a) Inlet location (b) Terrace slope (c) Watershed area (d) Outlet location
Ans: D
39. One hectare is equal to
(a) 1000 m2 (b) 100 m2 (c) 10000 m2 (d) 10 m2
Ans: C
40. Rational formula is used to estimate
(a) peak flow rate (b) average flow rate (c) uniform flow rate (d) free flow rate
Ans: A
41. Mannings formula is used to determine
(a) peak flow rate (b) flow velocity (c) return period (d) time of peak
Ans: B
42. Chezy’s formula is used to determine
(a) flow direction (b) flow velocity (c) flow duration (d) none of the above
Ans: B
43. Temporary gully control structures are designed for a recurrence interval of
(a) upto 10 years (b) upto 8 years (c) upto 15 years (d) upto 20 years
Ans: A
44. Primary cause of failure of permanent gully control structures is
(a) Insufficient hydraulic capacity (b) Insufficient flow velocity (c) Both of the above (d) None of the above
Ans: A
45. Spacing of mole drains ranges between _____.
(a) 0.5 to 1.0 m (b) 20 to 25 m (c) 10 to 15 m (d) 1.5 to 9 m
Ans: D
46. In heavy rainfall areas which type of bench terraces should be preferred ?
(a) Level benches (b) Slopping outward benches (c) Sloping inward benches (d) None of the above
Ans: C
47. Drainage coefficient is defined as the depth of water in centimetre drained from any area in
(a) 12 hours (b) 18 hours (c) 06 hours (d) 24 hours
Ans: D
48. Most important factor influencing the value of drainage coefficient is
(a) crop (b) field size (c) rainfall (d) none of the above
Ans: C
49. Collector drains must have their diameter
(a) Larger than lateral drains (b) Less than lateral drains (c) Equal to lateral drains (d) None of the above
Ans: A
50. Sub-surface drainage system includes
(a) drainage outlet and collector drains only (b) drainage outlet and laterals only
(c) drainage outlet, collectors and laterals (d) none of the above
Ans: C
(a) kg (b) ton (c) cm (d) percent
Ans: C
2. Which of the following is not used for gully erosion control ?
(a) Check dams (b) Brush dams (c) Loose rock dams (d) High dams
Ans: D
3. Which of the following is not a mechanical method of erosion control ?
(a) Contour farming (b) Conservation tillage (c) Free cropping (d) Small dams
Ans: C
4. Which of the following is not a stage of gully development ?
(a) Zero stage (b) Formation stage (c) Development stage (d) Healing stage
Ans: A
5. Which of the following is not a permanent gully control structure ?
(a) Contour bund (b) Drop spillway (c) Permanent check dams (d) Drop (inlet) spillway
Ans: A
6. Which of the following is not a type of soil erosion due to water ?
(a) Raindrop erosion (b) Gully erosion (c) Final erosion (d) Sheet erosion
Ans: C
7. Which of the following is not a process of soil erosion ?
(a) Detachment of soil particles (b) Transportation of soil particles (c) Both of the above (d) Shining of soil particles
Ans: D
8. Which of the following is not a type of soil erosion ?
(a) Accelerated soil erosion (b) Geological soil erosion (c) Water erosion (d) Single erosion
Ans: D
9. Spacing of tile drains is generally kept as
(a) 1 – 2 m (b) 4 – 5 m (c) 9 – 60 m (d) 70 – 95 m
Ans: C
10. The depth of tile drains in uniformly permeable soil is kept as
(a) 0.25 to 0.5 m (b) 0.75 to 1.5 m (c) 2.0 to 3.5 m (d) 4.0 to 5.5 m
Ans: B
11. Which method should be used for irrigation in undulating fields ?
(a) Flooding method of irrigation (b) Furrow method of irrigation (c) Check basin method of irrigation (d) Sprinkler irrigation method
Ans: D
12. Which of the following is not a method of surface irrigation ?
(a) Free flooding irrigation (b) Border irrigation (c) Critical irrigation (d) Check basin irrigation
Ans: C
13. Which of the following is not a method of irrigation ?
(a) Drip irrigation (b) Accelerated irrigation (c) Sub-surface irrigation (d) Pitcher irrigation
Ans: B
14. Due to evaporation, the liquid water is transferred to
(a) atmosphere (b) river (c) pond (d) well
Ans: A
15. Over irrigation results in
(a) increasing crop yield (b) maintaining soil fertility (c) economic utilization of water (d) none of the above
Ans: D
16. Efficient irrigation to the crops will provide
(a) increased crop yield (b) increased water logging (c) increased salt accumulation (d) none of the above
Ans: A
17. Water conveyance efficiency is related to which of the following ?
(a) Water stored in the root zone (b) Water needed in the root zone (c) Uniformity of the water applied (d) None of the above
Ans: D
18. Water distribution efficiency indicates
(a) water supplied at source (b) water delivered at field (c) average depth of water stored during irrigation (d) none of the above
Ans: C
19. To which of the following the ‘duty’ of water is related ?
(a) Quantity of water used (b) Area to the irrigated (c) Height of crop (d) None of the above
Ans: B
20. The Lysimeter is used to determine
(a) Sun shine hours (b) Wind velocity (c) Flow velocity (d) Evapotranspiration
Ans: D
21. Discharge of water as vapour into atmosphere by leaves and stems of living plants is called
(a) evaporation (b) consumptive use (c) transpiration (d) none of the above
Ans: C
22. Evaporation pan is made of
(a) brass (b) cast iron (c) mild steel (d) none of the above
Ans: C
23. Diameter of a commonly used evaporation pan is
(a) 65 cm (b) 75 cm (c) 95 cm (d) 120 cm
Ans: D
24. Which of the following is not related to wind erosion ?
(a) Speed of wind (b) Age of the soil (c) Moisture content of soil (d) Texture of soil
Ans: B
25. Which of the following is not a drainage system ?
(a) Drip system (b) Surface system (c) Sub-surface system (d) All of the above
Ans: A
26. Which of the following is not a component of a drip irrigation system ?
(a) Head unit (b) Perforated pipe (c) Water conveyance and distribution pipes (d) Drippers
Ans: B
27. In which country the drip irrigation system was originally developed ?
(a) India (b) Pakistan (c) Israel (d) China
Ans: C
28. Which of the following is not a component of a sprinkler irrigation system ?
(a) Pump (b) Sprinkler nozzle (c) Main and lateral pipe lines (d) Drip nozzles
Ans: D
29. The rate of evaporation of water does not depend on
(a) temperature of water (b) temperature of air in contact with water (c) humidity of air (d) depth of water
Ans: D
30. Evaporation process is a _____ process.
(a) chemical (b) biological (c) physical (d) none of the above
Ans: C
31. Evaporation is the process of
(a) condensation (b) vaporization (c) conduction (d) radiation
Ans: B
32. Unit of ‘delta’ is
(a) cubic meter (b) square meter (c) hectare (d) meter
Ans: D
33. The water requirement of a crop is mainly estimated for
(a) crop planning on the farm (b) determining transpiration (c) determining water loss (d) none of the above
Ans: A
34. The depth of a commonly used evaporation pan is
(a) 20 cm (b) 50 cm (c) 100 cm (d) 150 cm
Ans: A
35. The permissible mean flow velocity in an earthen channel in sandy loam soil is
(a) 40 cm/sec (b) 60 cm/sec (c) 80 cm/sec (d) 100 cm/sec
Ans: B
36. A significant soil building crops group is
(a) cereal crops (b) leguminous crops (c) fodder crops (d) fruit crops
Ans: B
37. Border slope for clay to clay loam soils is kept generally
(a) 0.05 to 0.20 % (b) 0.20 to 0.40 % (c) 0.25 to 0.65 % (d) none of the above
Ans: A
38. The first step in planning a terrace system is the selection of
(a) Inlet location (b) Terrace slope (c) Watershed area (d) Outlet location
Ans: D
39. One hectare is equal to
(a) 1000 m2 (b) 100 m2 (c) 10000 m2 (d) 10 m2
Ans: C
40. Rational formula is used to estimate
(a) peak flow rate (b) average flow rate (c) uniform flow rate (d) free flow rate
Ans: A
41. Mannings formula is used to determine
(a) peak flow rate (b) flow velocity (c) return period (d) time of peak
Ans: B
42. Chezy’s formula is used to determine
(a) flow direction (b) flow velocity (c) flow duration (d) none of the above
Ans: B
43. Temporary gully control structures are designed for a recurrence interval of
(a) upto 10 years (b) upto 8 years (c) upto 15 years (d) upto 20 years
Ans: A
44. Primary cause of failure of permanent gully control structures is
(a) Insufficient hydraulic capacity (b) Insufficient flow velocity (c) Both of the above (d) None of the above
Ans: A
45. Spacing of mole drains ranges between _____.
(a) 0.5 to 1.0 m (b) 20 to 25 m (c) 10 to 15 m (d) 1.5 to 9 m
Ans: D
46. In heavy rainfall areas which type of bench terraces should be preferred ?
(a) Level benches (b) Slopping outward benches (c) Sloping inward benches (d) None of the above
Ans: C
47. Drainage coefficient is defined as the depth of water in centimetre drained from any area in
(a) 12 hours (b) 18 hours (c) 06 hours (d) 24 hours
Ans: D
48. Most important factor influencing the value of drainage coefficient is
(a) crop (b) field size (c) rainfall (d) none of the above
Ans: C
49. Collector drains must have their diameter
(a) Larger than lateral drains (b) Less than lateral drains (c) Equal to lateral drains (d) None of the above
Ans: A
50. Sub-surface drainage system includes
(a) drainage outlet and collector drains only (b) drainage outlet and laterals only
(c) drainage outlet, collectors and laterals (d) none of the above
Ans: C
51. Universal Soil Loss Equation (USLE) is used to calculate
(a) average annual soil loss (b) average weekly soil loss (c) average daily soil loss (d) average monthly soil loss
Ans: A
52. Removal of thin and fairly uniform layer of the soil from the land surface by runoff water is called as,
(a) torrent erosion (b) sheet erosion (c) glacial erosion (d) uniform erosion
Ans: B
53. The common size of screen opening for a tube well is
(a) less than 1.5 mm (b) 1.5 mm to 5.0 mm (c) 5.0 mm to 7.5 mm (d) 10.0 mm to 15.0 mm
Ans: B
54. One cubic meter volume is equal to
(a) 10 litre (b) 1000 litre (c) 100 litre (d) 10000 litre
Ans: B
55. The vertical interval of a terrace system does not depend on
(a) land slope (b) crop height (c) surface topography (d) soil type
Ans: B
56. The longitudinal slope in a terrace is kept as
(a) 0.75 % (b) 1.50 % (c) 2.50 % (d) 10.0 %
Ans: A
57. Weirs are classified based on _____.
(a) shape of the notch only (b) type of the crest only (c) both (a) and (b) (d) none of the above
Ans: C
58. Minor irrigation schemes include
(a) land reclamation schemes (b) surface water irrigation scheme (c) ground-water irrigation scheme (d) both (b) and (c)
Ans: D
59. The flow rate from a canal outlet depends on
(a) size of outlet opening only (b) head of water above outlet only (c) both above (d) none of the above
Ans: C
60. Ponds are small water storage structures used for
(a) Water supply only (b) Ground-water recharge only (c) Irrigation only (d) All of the above
Ans: D
61. The water table in an unconfined aquifer depends on
(a) permeability of soil only (b) pumpage from well only (c) area of recharge only (d) all of the above
Ans: D
62. Water required by the border strip is 42.86 cubic meter, if the discharge available is 36 m3/hr, then the time required to irrigate the border will be
(a) 4.19 hour (b) 3.19 hour (c) 2.19 hour (d) 1.19 hour
Ans: D
63. If the weight of moist soil is 1.18 kg and the weight of dry soil is 1 kg, then the moisture content of soil on dry weight basis will be,
(a) 0.0018 % (b) 1.8 % (c) 0.018 % (d) 18%
Ans: D
64. The amount of silt and clay in a sandy loam soil is
(a) more than 30% (b) more than 20% (c) more than 50% (d) more than 40%
Ans: B
65. The average moisture extraction by plants from the first 25% of soil depth is
(a) 50% (b) 45% (c) 40% (d) 35%
Ans: C
66. The drainage area above the top most terrace is generally kept
(a) 4.0 hectare (b) 10.0 hectare (c) 2.0 hectare (d) 1.0 hectare
Ans: D
67. Emitter pipes are classified based on pressure rating into
(a) two classes (b) three classes (c) four classes (d) five classes
Ans: C
68. The material of emitting pipes should be resistant to
(a) Fertilizers (b) Chemicals (c) Both (a) and (b) (d) None of the above
Ans: C
69. Water application rate from sprinkler system depends on
(a) discharge of sprinkler only (b) sprinkler spacing only (c) lateral movement speed (d) all of the above
Ans: D
70. In water logged lands, the soil pores are saturated
(a) within a depth of 30 cm (b) within a depth of 40 cm (c) within a depth of 60 cm (d) beyond root zone of a crop
Ans: D
71. In irrigated regions, water logging of low lands is due to
(a) seepage from canals (b) seepage from unlined irrigation channels (c) both of the above (d) none of the above
Ans: C
72. Open drains have disadvantage because
(a) devide farm area into fragments. (b) interfere with the movement of machinery. (c) waste considerable area of the farm. (d) all above
Ans: D
73. Depth of deep tube wells is kept as, _____ .
(a) 20 m (b) 40 m (c) 60 m (d) 100 m or more
Ans: D
74. The gully development is accomplished under how many stages ?
(a) Only two stages (b) Only three stages (c) Only four stages (d) Only five stages
Ans: C
75. Which of the following is due to wind erosion ?
(a) Delta (b) Sea coast (c) Sedimentation (d) Sand dune
Ans: D
76. Gully erosion is an advanced stage of
(a) Sheet erosion (b) Channel erosion (c) Splash erosion (d) Rill erosion
Ans: D
77. Sprinklers are lubricated by
(a) oil (b) grease (c) oil and grease (d) water
Ans: D
78. The Planimeter measures
(a) area (b) volume (c) density (d) land roughness
Ans: A
79. A well screen is used in
(a) open well (b) cavity well (c) tube well (d) none of the above
Ans: C
80. The recorded description of materials encountered in sequence throughout drilling with reference to the distance from the ground surface is known as,
(a) well log (b) well casing (c) well depth (d) well description
Ans: A
81. Culturable command area for a minor irrigation project is
(a) more than 10000 hectare (b) more than 5000 hectare (c) upto 5000 hectare (d) upto 2000 hectare
Ans: D
82. Small watershed are those in which
(a) runoff is predominant (b) overland flow dominates the runoff (c) base flow predominant (d) all of the above
Ans: B
83. The difference in moisture content of the soil between field capacity and permanent wilting point is known as,
(a) capillary water (b) hygroscopic water (c) percolation water (d) available water
Ans: D
84. Sprinkler irrigation method can be preferably used
(a) in places with high wind velocity. (b) for clay soil with very low infiltration rate.
(c) for soils with heavy texture and low infiltration rate. (d) for soils with light texture and high infiltration rate.
Ans: D
85. Contour trenching should be done in
(a) winter season (b) summer season (c) throughout the year (d) none of the above
Ans: C
86. If the net amount of irrigation is 10 cm and the field irrigation efficiency is 80%, the gross amount of water applied is
(a) 10.66 cm (b) 12.50 cm (c) 8.0 cm (d) 800 cm
Ans: B
87. Mole drains are underground unlined circular or oval earthen channels formed by a mole plough in
(a) sandy-loam soils (b) non-cohesive soils (c) sandy soils (d) cohesive soils
Ans: D
88. A drainage canal draining 250 hectare area has a discharge of 0.3 m3/s, the drainage coefficient of the area will be
(a) 0.7 cm (b) 1.036 cm (c) 1.412 cm (d) 2.178 cm
Ans: B
(a) average annual soil loss (b) average weekly soil loss (c) average daily soil loss (d) average monthly soil loss
Ans: A
52. Removal of thin and fairly uniform layer of the soil from the land surface by runoff water is called as,
(a) torrent erosion (b) sheet erosion (c) glacial erosion (d) uniform erosion
Ans: B
53. The common size of screen opening for a tube well is
(a) less than 1.5 mm (b) 1.5 mm to 5.0 mm (c) 5.0 mm to 7.5 mm (d) 10.0 mm to 15.0 mm
Ans: B
54. One cubic meter volume is equal to
(a) 10 litre (b) 1000 litre (c) 100 litre (d) 10000 litre
Ans: B
55. The vertical interval of a terrace system does not depend on
(a) land slope (b) crop height (c) surface topography (d) soil type
Ans: B
56. The longitudinal slope in a terrace is kept as
(a) 0.75 % (b) 1.50 % (c) 2.50 % (d) 10.0 %
Ans: A
57. Weirs are classified based on _____.
(a) shape of the notch only (b) type of the crest only (c) both (a) and (b) (d) none of the above
Ans: C
58. Minor irrigation schemes include
(a) land reclamation schemes (b) surface water irrigation scheme (c) ground-water irrigation scheme (d) both (b) and (c)
Ans: D
59. The flow rate from a canal outlet depends on
(a) size of outlet opening only (b) head of water above outlet only (c) both above (d) none of the above
Ans: C
60. Ponds are small water storage structures used for
(a) Water supply only (b) Ground-water recharge only (c) Irrigation only (d) All of the above
Ans: D
61. The water table in an unconfined aquifer depends on
(a) permeability of soil only (b) pumpage from well only (c) area of recharge only (d) all of the above
Ans: D
62. Water required by the border strip is 42.86 cubic meter, if the discharge available is 36 m3/hr, then the time required to irrigate the border will be
(a) 4.19 hour (b) 3.19 hour (c) 2.19 hour (d) 1.19 hour
Ans: D
63. If the weight of moist soil is 1.18 kg and the weight of dry soil is 1 kg, then the moisture content of soil on dry weight basis will be,
(a) 0.0018 % (b) 1.8 % (c) 0.018 % (d) 18%
Ans: D
64. The amount of silt and clay in a sandy loam soil is
(a) more than 30% (b) more than 20% (c) more than 50% (d) more than 40%
Ans: B
65. The average moisture extraction by plants from the first 25% of soil depth is
(a) 50% (b) 45% (c) 40% (d) 35%
Ans: C
66. The drainage area above the top most terrace is generally kept
(a) 4.0 hectare (b) 10.0 hectare (c) 2.0 hectare (d) 1.0 hectare
Ans: D
67. Emitter pipes are classified based on pressure rating into
(a) two classes (b) three classes (c) four classes (d) five classes
Ans: C
68. The material of emitting pipes should be resistant to
(a) Fertilizers (b) Chemicals (c) Both (a) and (b) (d) None of the above
Ans: C
69. Water application rate from sprinkler system depends on
(a) discharge of sprinkler only (b) sprinkler spacing only (c) lateral movement speed (d) all of the above
Ans: D
70. In water logged lands, the soil pores are saturated
(a) within a depth of 30 cm (b) within a depth of 40 cm (c) within a depth of 60 cm (d) beyond root zone of a crop
Ans: D
71. In irrigated regions, water logging of low lands is due to
(a) seepage from canals (b) seepage from unlined irrigation channels (c) both of the above (d) none of the above
Ans: C
72. Open drains have disadvantage because
(a) devide farm area into fragments. (b) interfere with the movement of machinery. (c) waste considerable area of the farm. (d) all above
Ans: D
73. Depth of deep tube wells is kept as, _____ .
(a) 20 m (b) 40 m (c) 60 m (d) 100 m or more
Ans: D
74. The gully development is accomplished under how many stages ?
(a) Only two stages (b) Only three stages (c) Only four stages (d) Only five stages
Ans: C
75. Which of the following is due to wind erosion ?
(a) Delta (b) Sea coast (c) Sedimentation (d) Sand dune
Ans: D
76. Gully erosion is an advanced stage of
(a) Sheet erosion (b) Channel erosion (c) Splash erosion (d) Rill erosion
Ans: D
77. Sprinklers are lubricated by
(a) oil (b) grease (c) oil and grease (d) water
Ans: D
78. The Planimeter measures
(a) area (b) volume (c) density (d) land roughness
Ans: A
79. A well screen is used in
(a) open well (b) cavity well (c) tube well (d) none of the above
Ans: C
80. The recorded description of materials encountered in sequence throughout drilling with reference to the distance from the ground surface is known as,
(a) well log (b) well casing (c) well depth (d) well description
Ans: A
81. Culturable command area for a minor irrigation project is
(a) more than 10000 hectare (b) more than 5000 hectare (c) upto 5000 hectare (d) upto 2000 hectare
Ans: D
82. Small watershed are those in which
(a) runoff is predominant (b) overland flow dominates the runoff (c) base flow predominant (d) all of the above
Ans: B
83. The difference in moisture content of the soil between field capacity and permanent wilting point is known as,
(a) capillary water (b) hygroscopic water (c) percolation water (d) available water
Ans: D
84. Sprinkler irrigation method can be preferably used
(a) in places with high wind velocity. (b) for clay soil with very low infiltration rate.
(c) for soils with heavy texture and low infiltration rate. (d) for soils with light texture and high infiltration rate.
Ans: D
85. Contour trenching should be done in
(a) winter season (b) summer season (c) throughout the year (d) none of the above
Ans: C
86. If the net amount of irrigation is 10 cm and the field irrigation efficiency is 80%, the gross amount of water applied is
(a) 10.66 cm (b) 12.50 cm (c) 8.0 cm (d) 800 cm
Ans: B
87. Mole drains are underground unlined circular or oval earthen channels formed by a mole plough in
(a) sandy-loam soils (b) non-cohesive soils (c) sandy soils (d) cohesive soils
Ans: D
88. A drainage canal draining 250 hectare area has a discharge of 0.3 m3/s, the drainage coefficient of the area will be
(a) 0.7 cm (b) 1.036 cm (c) 1.412 cm (d) 2.178 cm
Ans: B
89. The water which can be removed by drainage is
(a) hygroscopic water (b) gravitational water (c) capillary water (d) perched water
Ans: B
90. Which of the following trees can be used for bio-drainage work ?
(a) Mango (b) Eucalyptus (c) Guava (d) Sisal
Ans: B
91. In tile drain installation, the envelope material is required for
(a) increasing the flow rate (b) increasing the life of tile drains
(c) increasing the strength of tile drains (d) decreasing the length of tile drains
Ans: A
92. Which of the following is the surface drain ?
(a) Mole drain (b) Tile drain (c) Vertical drain (d) Open ditch drain
Ans: D
93. The prismoidal formula is used to determine _____.
(a) runoff rate (b) earthwork volume (c) land slope (d) infiltration rate
Ans: B
94. Which of the following is not a land grading method ?
(a) Profile method (b) Laser method (c) Trapezoidal method (d) Plane inspection method
Ans: C
95. Four point method is used to determine
(a) earthwork volume (b) cross slope (c) longitudinal slope (d) volume of water
Ans: A
96. Water meter is used to measure
(a) flow rate in streams (b) flow rate in pipes (c) water volume storage (d) water energy
Ans: B
97. One ha-cm volume of water is equal to
(a) 10 m3 (b) 100 m3 (c) 1000 m3 (d) 10000 m3
Ans: B
98. The pressure head in a sprinkler system is converted into velocity head at the
(a) sprinkler head (b) sprinkler jet (c) nozzle (d) riser head
Ans: C
99. A soil solution with its pH value as 7.0 indicates that
(a) soil is saline (b) soil is acidic (c) soil is alkaline (d) soil is neutral
Ans: D
100. The discharge of emitters in a drip irrigation system usually ranges between
(a) 2 to 10 litre/hour (b) 2 to 10 litre/second (c) 120 to 200 litre/hour (d) 50 to 75 litre/hour
Ans: A
(a) hygroscopic water (b) gravitational water (c) capillary water (d) perched water
Ans: B
90. Which of the following trees can be used for bio-drainage work ?
(a) Mango (b) Eucalyptus (c) Guava (d) Sisal
Ans: B
91. In tile drain installation, the envelope material is required for
(a) increasing the flow rate (b) increasing the life of tile drains
(c) increasing the strength of tile drains (d) decreasing the length of tile drains
Ans: A
92. Which of the following is the surface drain ?
(a) Mole drain (b) Tile drain (c) Vertical drain (d) Open ditch drain
Ans: D
93. The prismoidal formula is used to determine _____.
(a) runoff rate (b) earthwork volume (c) land slope (d) infiltration rate
Ans: B
94. Which of the following is not a land grading method ?
(a) Profile method (b) Laser method (c) Trapezoidal method (d) Plane inspection method
Ans: C
95. Four point method is used to determine
(a) earthwork volume (b) cross slope (c) longitudinal slope (d) volume of water
Ans: A
96. Water meter is used to measure
(a) flow rate in streams (b) flow rate in pipes (c) water volume storage (d) water energy
Ans: B
97. One ha-cm volume of water is equal to
(a) 10 m3 (b) 100 m3 (c) 1000 m3 (d) 10000 m3
Ans: B
98. The pressure head in a sprinkler system is converted into velocity head at the
(a) sprinkler head (b) sprinkler jet (c) nozzle (d) riser head
Ans: C
99. A soil solution with its pH value as 7.0 indicates that
(a) soil is saline (b) soil is acidic (c) soil is alkaline (d) soil is neutral
Ans: D
100. The discharge of emitters in a drip irrigation system usually ranges between
(a) 2 to 10 litre/hour (b) 2 to 10 litre/second (c) 120 to 200 litre/hour (d) 50 to 75 litre/hour
Ans: A