MCQOPTIONS
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MCQOPTIONS
This section includes 149 Mcqs, each offering curated multiple-choice questions to sharpen your Irrigation Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
What type of canal necessitates construction of cross drainage works more than any other types? |
| A. | Side Slope Canal |
| B. | Contour Canal |
| C. | Watershed Canal |
| D. | Field Channel |
| Answer» C. Watershed Canal | |
| 52. |
Which type of canal is most useful in hilly areas? |
| A. | Side Slope Canal |
| B. | Contour Canal |
| C. | Watershed Canal |
| D. | Field Channel |
| Answer» C. Watershed Canal | |
| 53. |
Canal irrigation is generally preferred in __________ |
| A. | alluvial canal |
| B. | non-alluvial canal |
| C. | non-perennial canal |
| D. | feeder canal |
| Answer» B. non-alluvial canal | |
| 54. |
Non-alluvial soils are generally found in a mountainous region. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 55. |
Which of the following combination is not correct? |
| A. | Feeder canal – no direct irrigation is carried out |
| B. | Protective canal – constructed as a relief work during the famine |
| C. | Lined canal – provided with a lining of impervious material on its bed |
| D. | Contour canal – provision of cross drainage works is not required |
| Answer» E. | |
| 56. |
Which canal acts as an irrigation canal as well as a feeder canal? |
| A. | Feeder canal |
| B. | Carrier canal |
| C. | Inundation canal |
| D. | Permanent canal |
| Answer» C. Inundation canal | |
| 57. |
Hard foundations are generally available in non-alluvial soils. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 58. |
According to which factor the real cost of irrigation water can be worked out? |
| A. | Maintenance Costs |
| B. | Initial Capital |
| C. | Economic Considerations |
| D. | Total Area of Irrigated Land |
| Answer» D. Total Area of Irrigated Land | |
| 59. |
Which canal is not provided with any headworks for diversion of river water? |
| A. | Permanent canal |
| B. | Feeder canal |
| C. | Perennial canals |
| D. | Inundation canals |
| Answer» E. | |
| 60. |
The manning’s coefficient for a lined trapezoidal channel with a bed slope of 1 in 4000 is 0.014 and it will be 0.028 if the channel is unlined. The area in the case of the lined section is 19.04 m² and for the unlined section is 29.09 m². What percentage of earthwork is saved in a lined section relative to an unlined section, when a hydraulically efficient section is used in both the cases? |
| A. | 24.44 % |
| B. | 34.55% |
| C. | 50% |
| D. | 37.66% |
| Answer» C. 50% | |
| 61. |
Who has the authority to grant remissions to the cultivators? |
| A. | IAS Officer |
| B. | Canal Officer |
| C. | Patwari |
| D. | Tahsildar |
| Answer» C. Patwari | |
| 62. |
Which type of fall is not adopted in India? |
| A. | Ogee Fall |
| B. | Rapids |
| C. | Inglis Fall |
| D. | Montague Type Fall |
| Answer» E. | |
| 63. |
What type of crest width is provided in designing a straight glacis fall? |
| A. | Deep Crest |
| B. | Shallow Crest |
| C. | Broad Crest |
| D. | Narrow Crest |
| Answer» E. | |
| 64. |
If a looping is present in the ridge line they how can that area be irrigated with? |
| A. | Distributary |
| B. | Tributary |
| C. | Weir |
| D. | Canal |
| Answer» B. Tributary | |
| 65. |
Crop rate system of pricing does not help the cultivators for economizing the use of water. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 66. |
The ratio of the actual operating period of a distributary to the crop period is called as ____________ |
| A. | capacity factor |
| B. | time factor |
| C. | full supply coefficient |
| D. | nominal duty |
| Answer» C. full supply coefficient | |
| 67. |
Which type of fall is suitable for 60 cumecs discharge and 1.5 m drop? |
| A. | Montague Type Fall |
| B. | Rapids |
| C. | Straight Glacis Fall |
| D. | Baffle Fall |
| Answer» D. Baffle Fall | |
| 68. |
In case of high demand but insufficient supplies, all the smaller channels are made to run simultaneously and continuously with reduced supplies. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 69. |
The discharge formula used in the design of the syphon well drop is ____________ |
| A. | 8/15 Cd. (2g)^1/2. tan (Q/2). H^5/2 |
| B. | 2/3 Cd. (2g)^1/2. L. H^3/2 |
| C. | 8/15 Cd. (2g)^1/2. tan (Q/2). H^3/2 |
| D. | 2.22H^3/2 [L + 0.4nH] |
| Answer» E. | |
| 70. |
The Remodelling of canal system is done to __________ |
| A. | beautify the canal surroundings |
| B. | correct deformations in the canal |
| C. | exhibit the canal in exhibition |
| D. | widen up the channel section |
| Answer» C. exhibit the canal in exhibition | |
| 71. |
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 |
| Answer» B. Critical Velocity = Actual Velocity | |
| 72. |
The CCA of a water course is 1500 hectares. The intensity of sugarcane and wheat crops is 20% and 40% respectively. The duties for the crops at the head of the watercourse are 730 hectares/cumec and 1600 hectares/cumec respectively. Calculate the design discharge at the outlet assuming a time factor equal to 0.8. |
| A. | 0.55 cumec |
| B. | 1.0 cumec |
| C. | 0.72 cumec |
| D. | 0.92 cumec |
| Answer» D. 0.92 cumec | |
| 73. |
The transplantation of rice takes 18 days and the total depth of water required by the crop is 60 cm on the field. During this transplantation period, rain starts falling and about 10 cm of rain is being utilized to fulfill the rice demand. Find the duty of irrigation water required for rice assuming 25% losses of water in watercourses. |
| A. | 233.28 hectares/cumec |
| B. | 240 hectares/cumec |
| C. | 230 hectares/cumec |
| D. | 244.44 hectares/cumec |
| Answer» B. 240 hectares/cumec | |
| 74. |
In which of the following phenomenon there is a continuous direct flow between the canal and the underground water table? |
| A. | Absorption |
| B. | Seepage |
| C. | Percolation |
| D. | Both Absorption and Percolation |
| Answer» D. Both Absorption and Percolation | |
| 75. |
Which of the following factor do not affect seepage loss? |
| A. | Underground water-table condition |
| B. | The porosity of the soil |
| C. | Physical properties of the canal water |
| D. | Prevailing wind velocity in the region |
| Answer» E. | |
| 76. |
Loss of canal discharge occurs mainly due to? |
| A. | Seepage and Percolation |
| B. | Percolation and Absorption |
| C. | Seepage and Evaporation |
| D. | Seepage and Absorption |
| Answer» D. Seepage and Absorption | |
| 77. |
Design of alluvial channels in India is based on Kennedy and Lacey theories. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 78. |
Which of the following combination is wrong? |
| A. | Roster – Indication of allotted supplies to different channels |
| B. | Flexible regulation – Allocation of supplies with anticipated demand |
| C. | Head regulator – Regulation of discharge in the canal |
| D. | Chak – Command area of an inlet |
| Answer» E. | |
| 79. |
The shear stress required to move grain on the side slopes is less than the shear stress required to move the grain on the canal bed. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 80. |
The velocity of the flowing water in a navigation canal should be __________ |
| A. | high |
| B. | very high |
| C. | small |
| D. | medium |
| Answer» D. medium | |
| 81. |
The cropped area in Rabi season is usually increased. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 82. |
Which soil has the least range of conveyance loss according to Etcheverry and Harding? |
| A. | Sandy Loam |
| B. | Clay Loam |
| C. | Loose sandy soil |
| D. | Impervious clay loam |
| Answer» E. | |
| 83. |
Which type of canal is the farmer’s responsibility? |
| A. | Contour Canal |
| B. | Side Slope Canal |
| C. | Watershed Canal |
| D. | Field Channel |
| Answer» E. | |
| 84. |
On what basis for designing the regime state is obtained? |
| A. | Silt and Velocity of Flow |
| B. | Silt |
| C. | Velocity |
| D. | Depth of Channel |
| Answer» B. Silt | |
| 85. |
A curve in channel results in _____________ |
| A. | silting on inside (convex side) and scouring on outside (concave side) |
| B. | scouring on inside (convex side) and scouring on outside (concave side) |
| C. | both silting and scouring on inside |
| D. | both silting and scouring on outside |
| Answer» B. scouring on inside (convex side) and scouring on outside (concave side) | |
| 86. |
What is the minimum size of the bed material that will remain at rest in a channel? |
| A. | d > or = 11 R.S |
| B. | d < or = 11 R.S |
| C. | d = 11 R.S |
| D. | d > 11 R.S |
| Answer» B. d < or = 11 R.S | |
| 87. |
A canal aligned on the watershed saves the cost of constructed cross drainage works. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 88. |
What is Gross Cropped Area? |
| A. | Net irrigated area + Area irrigated more than once during the same year |
| B. | Net cropped area + Area sown more than once during the same year |
| C. | Net irrigated area + Net cropped area |
| D. | Total area irrigated once a year + area irrigated more than once in that year |
| Answer» C. Net irrigated area + Net cropped area | |
| 89. |
What is the correct formula for Flow Time in an hour for an individual farmer? |
| A. | (FT for the unit area) x (area of farmer’s fields) + (his bharai – his jharai) |
| B. | (FT for the unit area) x (area of farmer’s fields) – (his bharai – his jharai) |
| C. | FT for the unit area + (his bharai – his jharai) |
| D. | FT for the unit area – (his bharai – his jharai) |
| Answer» B. (FT for the unit area) x (area of farmer’s fields) – (his bharai – his jharai) | |
| 90. |
Consider the following statements.I. Possibility of combining some other structure with a fall eg. regulator, road bridge etc.II. Cutting and filling are required below and above the fall should not be necessarily equal.III. The command should not be reduced due to the lowering of F.S.L and the fall may be located below the outlets.Which of the following statement is correct for site selection of a fall? |
| A. | I only |
| B. | III only |
| C. | I and II |
| D. | I and III |
| Answer» E. | |
| 91. |
For a canal that irrigates the area directly the fall should be provided at a location FSL outstrips the G.L before the bed of the canal comes into the filling. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 92. |
Canal drop or canal fall is needed construction in the canal bed. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 93. |
In the main agenda of National Water Policy what charges can be exempted for time being? |
| A. | Recovery of Annual Operation Charges |
| B. | Recovery of Maintenance Charges |
| C. | Recovery of Fixed Capital |
| D. | Irrigation Water Charges |
| Answer» D. Irrigation Water Charges | |
| 94. |
Kor demand of the crop should be taken into account while fixing the capacity of a canal. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 95. |
What is the shape of upstream wings in design of baffle fall? |
| A. | Trapezoidal |
| B. | Rectangular |
| C. | Circular |
| D. | Square |
| Answer» D. Square | |
| 96. |
Which of the following combination is incorrect? |
| A. | Silt removal – Silt ejectors and silt escapes |
| B. | Aquatic weed control – Mechanical removal of plants |
| C. | Breach due to piping – provision of a sand core in the bank |
| D. | Breaches in a big canal – Dumping huge quantity of earth |
| Answer» E. | |
| 97. |
What are the categories of the entire water conveyance system? |
| A. | The primary distribution system and secondary distribution system |
| B. | The primary distribution system, the secondary distribution system, and Water allowance |
| C. | The primary distribution system, secondary distribution system, and tertiary distribution system |
| D. | The primary distribution system, secondary distribution system, tertiary distribution system, and Water allowance |
| Answer» D. The primary distribution system, secondary distribution system, tertiary distribution system, and Water allowance | |
| 98. |
Internal silting method and external silting method are the methods of ________________ |
| A. | strengthening of canal banks |
| B. | formation of berms |
| C. | silt removal |
| D. | formation of breaches |
| Answer» B. formation of berms | |
| 99. |
The length of the weir will not exceed the bed width of the canal upstream, in case of trapezoidal notch fall. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 100. |
Berm is _____________ |
| A. | a horizontal strip at the N.S.L |
| B. | a device to remove silt |
| C. | another name of the canal bank |
| D. | a gap created in the bank of the canal |
| Answer» B. a device to remove silt | |