Top 150+ Solved Irrigation Engineering MCQ Questions Answer
Q. If the R.L's of canal bed level and high flood level of drainage are 212.0 m and 210.0 mrespectively, then cross drainage work will be
a. aqueduct
b. superpassage
c. syphon
d. syphon aqueduct
Q. The aqueduct or superpassage type of works are generally used when
a. high flood drainage discharge is small
b. high flood drainage discharge is large and short lived
c. high flood drainage discharge is large and continues for a long time
d. none of the above
Q. An aggrading river is a
a. silting river
b. scouring river
c. both silting and scouring river
d. neither silting nor scouring river
Q. Tortuosity of a meandering river is the ratio of
a. meander belt to meander length
b. meander length to meander belt
c. curved length along the channel to the direct axial length of the river reach
d. direct axial length of the river reach to curved length along the channel
Q. The meander pattern of a river is developed by
a. average discharge
b. dominant discharge
c. maximum discharge
d. critical discharge
Q. The main cause of meandering is
a. presence of an excessive bed slope in the river
b. degradation
c. the extra turbulence generated by the excess of river sediment during floods
d. none of the above
Q. Tortuosity of a meandering river is always
a. equal to 1
b. less than 1
c. greater than 1
d. less than or equal to 1
Q. Select the correct statement.
a. A meander increases the river length but a cut off reduces the river length.
b. A cutoff increases the river length but a meander reduces the river length.
c. Both meander and cutoff increase the river length.
d. Both meander and cutoff decrease the river length.
Q. River training for depth is achieved by
a. groynes
b. construction of dykes or leavees
c. both (a) and (b)
d. groynes and bandalling
Q. Main purpose of mean water training for rivers is
a. flood control
b. to provide sufficient depth of water in navigable channels, during low water periods
c. to preserve the channel in good shape by efficient disposal of suspended and bed load
d. all of the above
Q. If D is the depth of scour below original bed, then the width of launching apron isgenerally taken as
a. 1.2 D
b. 1.5 D
c. 2.0 D
d. 2.5 D
Q. Study the following statements.i) Levees are constructed parallel to river flow,ii) Spurs are constructed parallel to river flow,iii) Levees are constructed transverse to river flow,iv) Spurs are constructed transverse to river flow.The correct answer is
a. (i) and (ii)
b. (i) and (iv)
c. (ii) and (iii)
d. (iii) and (iv)
Q. A repelling groyne is aligned
a. pointing upstream
b. pointing downstream
c. perpendicular to bank
d. parallel to bank
Q. A river training work is generally required when the river is
a. aggrading type
b. degrading type
c. meandering type
d. both (a) and (b)
Q. A river bend characterized by silting
a. scouring on concave side
b. silting on convex side
c. scouring on convex side and on concave side
d. scouring on concave side and silting on convex side