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2. For smooth entry of water in a canal, the angle between head regulator and water is generally kept
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Correct Answer:
110°
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3. Groynes are generally built
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Correct Answer:
Inclined up stream up to 30°
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4. When a canal is carried over a natural drainage, the structure provided, is known as
Answer
Correct Answer:
Aqueduct
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5. A hydraulic structure is designed to withstand
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Correct Answer:
All these
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6. Select the correct statement from the following:
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Correct Answer:
All these
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7. The measure to remove water logging of land, is
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Correct Answer:
To reduce percolation from canals and water courses and to increase outflow from the ground water reservoir
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8. In a canal syphon, the flow is
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Correct Answer:
Pipe flow
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9. For the conditions enumerated to provide a crossing at C1 You will probably provide
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Correct Answer:
A super-passage
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10. When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the underside of the supporting structure, the structure so provided, is called
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Correct Answer:
Super passage
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11. The crest level of a canal diversion head work, depends upon
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Correct Answer:
All these
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12. Attracting groynes are built
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Correct Answer:
Inclined down stream
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13. Pick the correct statement from the following:
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All these
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14. The saturation line is the line up to which banks get saturated after the canal runs for some time. The saturation gradient in ordinary loam soil, is generally
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Correct Answer:
4 : 1
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15. Retrogression of the bed level of a river downstream a weir, occurs due to
Answer
Correct Answer:
Less percentage of silt
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16. The useful moisture of soil, is equal to its
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Correct Answer:
Difference between filed capacity and permanent wilting point within the root zone of plants.
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17. F.S.L. of a canal at its head with respect to parent channel is kept
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Correct Answer:
15 cm lower
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18. Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less
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Correct Answer:
Fallow land
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19. A fall in a canal bed is generally provided, if
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Ground slope exceeds the designed bed slope
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20. For designing the venturi head
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All these
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21. Pick up the correct statement from the following:
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Correct Answer:
All these
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