For wave action in dams, the maximum height of freeboard is generally taken to be equal to_______________?
(A) 0.5 hw
(B) 0.75 hw
(C) 1.25 hw
(D) 1.50 hw
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
Hydrodynamic pressure due to earthquake acts at a height of_________________?
(A) 3H/47I above the base
(B) 3H747t below the water surface
(C) 4H/371 above the base
(D) 4H737t below the water surface where H is the depth of water
The uplift pressure on the face of a drainage gallery in a dam is taken as_________________?
(A) hydrostatic pressure at toe
(B) average of hydrostatic pressure at toe and heel
(C) two-third of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel
(D) none of the above
When the upstream face of a gravity dam is vertical, then the intensity of water pressure at the water surface and at the base respectively will be_______________?
(A) 0 and wH212
(B) wH2/2and wH2/3
(C) wH and 0
(D) OandwII
Trap efficiency of a reservoir is a function of_______________?
(A) capacity/inflow ratio
(B) capacity/outflow ratio
(C) outflow/inflow ratio
(D) none of the above
The water stored in the reservoir below the minimum pool level is called_______________?
(A) useful storage
(B) dead storage
(C) valley storage
(D) surcharge storage
In a Sarda type fall, rectangular crest is used for discharge upto______________?
(A) 6 cumecs
(B) 10 cumecs
(C) 14 cumecs
(D) 20 cumecs
The sensitivity of a rigid module is_______________?
(A) zero
(B) between zero and one
(C) 1
(D) infinity
Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?
(A) canal fall
(B) canal outlet
(C) canal escape
(D) canal regulator