Top 150+ Solved Irrigation Engineering MCQ Questions Answer
Q. The maximum depth in soil strata, in which the crop spreads its root system, and derives water from the soil, is called
a. kot depth
b. root zone depth
c. delta
d. overlap allowance
Q. In a canal section, which is in partial filling and partial cutting
a. the full supply level of the canal is above the natural surface level
b. the bed level of the canal is below the natural surface level
c. the full supply level of the canal is below the natural surface level
d. the bed level of the canal is above the natural surface level
e. both (a) and (b)
Q. The free board in a channel is governed by the
a. size of the canal
b. location of the canal
c. water surface fluctuations
d. all of these
Q. According to Khosla's theory, the exit gradient in the absence of a downstream cut-off is
a. zero
b. unity
c. infinity
d. none of these
Q. Which of the following statement is wrong?
a. The impermeable groynes do not permit any flow through them.
b. The impermeable groynes may be constructed by a core of locally available material like sand, clay and gravel.
c. The permeable groynes dampen the velocity and reduce the erosive action of the stream.
d. none of the above
Q. Assertion A : To estimate the rainfall over a catchment, the number of raingauges required per unit area is large for hilly areas.Reason R : Rainfall gradient is steep. Select your correct answer according to the coding system given below :
a. Both A and R are true and R is the correct explanation of A
b. Both A and R are true but R is not the correct explanation of A
c. A is true but R is false
d. A is false but R is true
Q. When surface of transpiration is submerged under water, then potential evapotranspiration is
a. much more than evapotranspiration
b. much less than evapotranspiration
c. equal to evapotranspiration
d. equal to or less than evapotr
Q. Unit of runoff in M.K.S. system is
a. cubic metre/sec
b. metre/sec
c. cubic metre
d. square metre
Q. The runoff increases with
a. increase in intensity of rain
b. increase in infiltration capacity
c. increase in permeability of soil
d. all of the above
Q. A current meter is used to measure the
a. velocity of flow of water
b. depth of flow of water
c. discharge
d. none of the above
Q. If it rains between 2 P.M. and 3 P.M. and the entire basin area just starts contributing waterat 3 P.M. to the outlet, then time of concentration will be
a. 15 minutes
b. 20 minutes
c. 30 minutes
d. 60 minutes
Q. The best unit duration of storm for a unit hydrograph is
a. 1 hour
b. one-fourth of basin lag
c. one-half of basin lag
d. equal to basin lag