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.Management Sciences
Category: Irrigation, Water Resources Engineering and Hydrology
A 70% index of wetness means_______________?
A. rain excess of 30%
B. rain deficiency of 30%
C. rain deficiency of 70%
D. none of the above
The uplift pressure on a dam can be controlled by_________________?
1) constructing cutoff under upstream face
2) constructing drainage channels bet-ween the dam and its foundation
3) by pressure grouting in foundation
The corret answer is?
A. only (1)
B. both (1) and (2)
C. both (1) and (3)
D. (1), (2) and (3)
To determine the discharge at a section in a stream from its rating curve, the required data are_______________?
1) slope of water surface at the section
2) stage at the section
3) current meter readings at the section
The correct answer is?
A. (1) and (2)
B. (2) and (3)
C. only (2)
D. only (3)
The net speed under which the turbine reaches its peak efficiency is called_________________?
A. design speed
B. rated speed
C. gross speed
D. operating speed
The most suitable material for the central impervious core of a zoned embankment type dam is_______________?
A. clay
B. coarse sand
C. silty clay
D. clay mixed with fine sand
The most suitable chemical which can be applied to the water surface for reducing evaporation is________________?
A. methyl alcohol
B. ethyl alcohol
C. cetyl alcohol
D. butyl alcohol
Hydrograph is the graphical representation of________________?
A. runoff and time
B. surface runoff and time
C. ground waterflow and time
D. rainfall and time
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
When the reservoir is full, the maximum compressive force in a gravity dam is produced______________?
A. at the toe
B. at the heel
C. within the middle third of base
D. at centre of base
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