A. Silt excluders
B. Silt ejectors
C. Vortex pipes
D. Silt control structures
Correct Answer: Silt excluders ✔
Last Updated: March 29, 2019
Related MCQs
- The depth before the jump is always less then the depth after the jump. The depth before the jump is called initial depth and depth after the jump is called__________?
- Mostly the hydraulic structures founded on __________ soils fails because of undermining and uplift pressure?
- At the end of hydraulic structure, the upward force of sub-soil water just becomes equal to the submerged weight of soil grains Then exit gradient will be called__________?
- Now- a -days the hydraulic structures are designed. Keeping in view the flow net, this was given by __________?
- To avoid scouring from end of structure, it is necessary to provide a __________ at the exit point?
- For strong Hydraulic jump containing maximum energy, the down stream glacis should be sloped at a slope of __________ to dissipate max: energy?
- When a weir is constructed, the downstream .bed of the river goes on eroding and consequently causes progressive lowering of the bed on downstream of weir called__________?
- The water way from a weir is determined by using Lacey’s wetted perimeter i.e. P=_______(Q)1/2 ?
- A water pool is designed on the down stream of the hydraulic structure to dissipate the energy of falling water by providing a water cushion called __________?
- A module or outlet in which discharge depends upon the difference of head between distributary and the water course is called __________?
- An outlet through which the discharge depends upon the water level in the distributary is called __________?
- The ratio of the rate of change of discharge through out let to the rate of c./v of water level of the distributary is called__________?
- When FSL of the canal is sufficiently below the bottom of the drain, so that water flows freely under gravity, such structures is called__________?
- A structure provided when a large canal a big drainage channel approach other practically at the same level is called__________?
- An open cut in the canal bank. with bed and sides to escape canal water through a lead channel to mix water in a nearby drain is called __________?
- The total dissolved solids in drinking water should not exceed__________?
- On relative basis, when one soil is eroded as compared to other soil under same conditions, this property is called __________?
- Darcy formula for loss of head in pipes is given by, hf=4fl v2 / __________?
- The aeration of water is done to remove __________?
- Velocity of flow in a sewer must be form __________ to ?
- A digging out of earth to make trench for any engineering purpose is called __________?
- The water in swimming pools can be __________ by using any one from the following, chlorine-ultraviolet rays and bromine t ?
- Mostly the salt of calcium and Magnesium can not cause __________?
- An open cut given in a canal bank, suitably protected by stone pitching to the upland drainage water into the canal is called __________?
- When FSL of the canal is sufficiently above the bed level of drainage so that canal flows under syphonis action, the structure is called __________?
- When the high flood level of the drain is sufficiently below the bed of the Canal that the drainage water flows freely under gravity, such structure is called__________?
- When the rate of change of discharge of outlet equals the rate of change of discharge of the channel, the out let is called __________?
- A module or outlet in which discharge is fixed and limited, irrespective fluctuations in water levels in distributary is called __________?
- The total length of impervious floor on down stream of the hydraulic structure is determined by Bligh’s Theory__________?
- The inverted filter consists layer of materials of increasing __________ from bottom to top?
- The invented filter is provided just after the end of concrete floor to reduce () possibility of __________?
- Khosla provided a seepage theory for design of Hydraulic structures called__________?
- According to Mr. Khosla, the seeping water creates undermining and the undermining starts from__________?
- To keep the Hydraulic structure safe against undermining the __________ should be safe?
- The loss of head H/ L is proportional to the length of creep. There fore the loss of head per unit creep length is called __________?
- According to Blight, the percolating water seeps along the lower contour of the hydraulic structure, the length traversed by this water is called __________?
- The hydraulic jump is formed on down stream of toe of glacis for the purpose to dissipate surplus energy of the flowing water, the nature and strength of jump depends upon a Number called__________?
- A water rise takes place on down stream of sloping glacis, when a stream of water moving with high velocity and low depth strikes another stream of flow moving with low velocity and high depth, such breakage in water surface is called__________?
- When high flood passing down weir creating high up lift pressures and there is no flow in the canals, if such condition is taken for design and is called__________?
- A regulator is water controlling structure, it is provided at the head of canal to supply water from parent canal to the branch channel is called__________?
- The various works constructed on river side to control the flow and pass it safely from hydraulic structures are called __________?
- The under sluices in a weir are provided, at the level of upstream floor dispose off the sediment deposited on downstream is called__________?
- The water level required on the upstream side of a canal head regulator, so as to feed the off-taking canal with its full supply is called__________?
- The down stream sloping glacis of the Hydraulic structure is made in such a way to form automatically the __________ and dissipate the surplus energy of flowing water?
- When the weight of weir balances the up lift pressure caused by the head of the water seeping below the weir bed is called __________?
- The groyne pointing downwards in the direction of flow in fiver is called__________?
- In alluvial river due to the action of centrifugal force, bends are developed by scouring on concave and silting on convex __________?
- If in a river the flood rises and falls suddenly due to storm rain, then such river is called __________?
- A river which does not change its alignment – slope and its regime significantly is called__________?
- The area irrigated in the year and it grows crops on which water rates are leveled is called__________?
- The floods which exceeds the designed magnitude of a reservoir is called __________?