Top 150+ Solved Irrigation Engineering MCQ Questions Answer
Q. Coefficient of discharge of an ogee spillway
a. depends on depth of approach and upstream slope
b. depends on downstream apron interference and downstream submergence
c. remains constant
d. both (a) and (b)
Q. Which of the following spillways is least suitable for an earthen dam ?
a. ogee spillway
b. chute spillway
c. side channel spillway
d. shaft spillway
Q. In case of non-availability of space due to topography, the most suitable spillway is
a. straight drop spillway
b. shaft spillway
c. chute spillway
d. ogee spillway
Q. For the upstream face of an earthen dam, the most adverse condition for stability of slope is
a. sudden drawdown
b. steady seepage
c. during construction
d. sloughing of slope
Q. If there are two canals taking off from each flank of a river, then there will be
a. one divide wall and one undersluice
b. one divide wall and two undersluices
c. two divide walls and one undersluice
d. two divide walls and two undersluices
Q. Generally the weir is aligned at right angles to the direction of the main river currentbecause
a. it ensures less length of the weir
b. it gives better discharging capacity
c. it is economical
d. all of the above
Q. The main function of a divide wall is to
a. control the silt entry in the canal
b. prevent river floods from entering the canal
c. separate the undersluices from weir proper
d. provide smooth flow at sufficiently low velocity
Q. A divide wall is provided
a. at right angle to the axis of weir
b. parallel to the axis of weir and up-stream of it
c. parallel to the axis of weir and down-stream of it
d. at an inclination to the axis of weir
Q. As compared to crest of the normal portion of the weir, the crest of the under sluice portionof weir is kept at
a. lower level
b. higher level
c. same level
d. any of the above depending on the design
Q. Silt excluders are constructed on the
a. river bed upstream of head regulator
b. river bed downstream of head regulator
c. canal bed upstream of head regulator
d. canal bed downstream of head regulator
Q. According to Khosla's theory, the exit gradient in the absence of a downstream cutoff is
a. 0
b. unity
c. infinity
d. very large
Q. The minimum size of stone that will remain at rest in a channel of longitudinal slope S andhydraulic mean depth R is given by
a. 4RS
b. 11 RS
c. 7RS
d. 15 RS
Q. The ratio of average values of shear stresses produced on the bed and the banks of a channeldue to flowing water is
a. less than 1
b. equal to 1
c. greater than 1
d. equal to zero