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.Management Sciences
Category: Irrigation, Water Resources Engineering and Hydrology
The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called________________?
A. effective rainfall
B. consumptive use
C. consumptive irrigation requirement
D. net irrigation requirement
Interception losses are due to_______________?
1) evaporation
2) transpiration
3) stream flow
The correct answer is?
A. only (1)
B. (1) and (2)
C. (1) and (3)
D. (1), (2) and (3)
The depth of water required to bring the soil moisture content of a given soil upto its field capacity is called_________________?
A. hygroscopic water
B. equivalent moisture
C. soil moisture deficiency
D. pellicular water
Instantaneous unit hydrograph is a hydrograph of________________?
1) unit duration
2) unit rainfall excess
3) infinitely small duration
4) infinitely small rainfall excess
The correct answer is?
A. (1) and (2)
B. (1)and(4)
C. (2) and (3)
D. (3) and (4)
An aggrading river is a_________________?
A. silting river
B. scouring river
C. both silting and scouring river
D. neither silting nor scouring river
As compared to gravity dams, earthen dams__________________?
A. are costlier
B. are less susceptible to failure
C. require sound rock foundations
D. require less skilled labour
Generally the weir is aligned at right angles to the direction of the main river current because______________?
A. it ensures less length of the weir
B. it gives better discharging capacity
C. it is economical
D. all of the above
As compared to crest of the normal portion of the weir, the crest of the under sluice portion of weir is kept at_____________?
A. lower level
B. higher level
C. same level
D. any of the above depending on the design
The maximum permissible eccentricity for no tension at the base of a gravity dam is__________________?
A. B/2
B. B/3
C. B/4
D. B/6
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