Q. 11 The water face of the guide banks, is protected by
A. Four man stone pitching
B. One men stone pitching
C. Two man stone pitching
D. Three man stone pitching
B. One men stone pitching
Q. 12 Pick up the correct statement from the following
A. The escapes must lead the surplus water to natural drainages
B. Escapes are essential safety valves in a canal system
C. The escapes are aligned to take advantage of contours of lower values
D. All the above
D. All the above
Q. 13 For a unique design of a channel by Kennedy’s theory
A. Its depth must only be known
B. Its breadth and depth ratio must only be known
C. Its breadth must only be known
D. All the above
B. Its breadth and depth ratio must only be known
Q. 14 The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called
A. Super-aqueduct
B. Syphon aqueduct
C. Syphon
D. Super passage
B. Syphon aqueduct
Q. 15 The main cause of silting up a channel,
A. Inadequate slope
B. Non-regime section
C. Defective head regulator
D. All the above
D. All the above
Q. 16 Pick up the correct statement from the following:
A. Hygroscopic water remains attached to soil molecules by chemical bond
B. Capillary moisture held in the soil pores against gravity by surface tension, is utilised by plants
C. Gravity water is harmful to crops
D. All the above
D. All the above
Q. 17 A river training work is generally required when the river is
A. Aggrading
B. Degrading
C. Meandering
D. All the above
C. Meandering
Q. 18 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
A. Super passage
B. Syphon-aqueduct
C. Syphon
D. Aqueduct
A. Super passage
Q. 19 Pick up the correct statement from the following
A. In a level crossing a regulator is provided across the drainage at its down-stream
B. In a level crossing, a cross regulator is provided on the canal below the crossing
C. In a level crossing, a crest with its top at the canal F.S.L. is provided across the drainage at its up-stream junction with canal
D. All the above
D. All the above
Q. 20 In a Sarda type fall, the rectangular crest, may be used for discharge upto
A. 10 cumecs
B. 14 cumecs
C. 6 cumecs
D. 20 cumecs
14 cumecs
