A. 1:2 to 1:4
B. 1:3 to 1:5
C. 1:4 to 1:6
D. 1:5 to 1:7
Correct Answer: 1:4 to 1:6 ✔
Last Updated: March 29, 2019
Related MCQs
- For an economical design of gravity dam, the shear friction factor causec compression strength should lie between__________?
- Water logging caused by __________ water, which during excessive irrigation percolates down and join under ground water table?
- The run-off from catchment areas, Roads, buildings and other fallow lands is called __________?
- The process to dilute the available salts from root Zone by providing simply canal water is known as __________?
- Water logging and soil salinization is a twin menace which has effected the agriculture sector severely, about __________ hectares of land are wasted yearly?
- A series of vertical steps in a stream made to avoid soil scouring is called __________?
- The ratio between the force causing a body to slide along a plane and the force normal to the plane is called __________?
- The science of water which deals with the depletion and replenishment of water resources is called__________?
- The maximum rate at which the soil in given condition can absorb water is called __________?
- The field capacity is the amount of water retained by a saturated soil mass after being acted by gravity. The amount of water required to bring the soil moisture content of that soil up to field capacity is called__________?
- In the initial stage of rainfall, when soil moisture available in the root zone is very low, the rate of infiltration ?
- To be more close to the actual field conditions, some times artificial rain tests conducted, the instrument used is called __________?
- During the peak stage of river, there exist an out flow from river into the ground water reservoir, in such case river will be called __________?
- The water evaporates from paddy surfaces to the atmosphere in the form of water vapours, these water vapours get collected in the atmosphere and behave & like__________?
- When the air in a atmosphere is fully saturated with the vapours present in it, then the pressure exerted by such wet air mass will be called __________?
- The amount of moisture content present in the air, when it is expressed as weight per unit volume is called __________?
- A cloud is formed due to condensation. it consists of a small particle of ice an. small droplets of water, having diameter about __________microns?
- The percentage of culturable commended area, irrigated during the year to the total culturable commanded area on a outlet or channel is called__________?
- Hydraulic structures are designed for a safe flow of flood. The floods which are equal in designed magnitude life of the project is called __________?
- A particular flood which can occur in the basin in the worst meteorological and hydrological conditions is called __________?
- If a river or stream is collecting sediment and is building up dunes in its bed is called __________?
- A river before its joins the sea, gets divided into small channels, thus forming a Triangular shape called __________?
- In a river the flood water dries up before it joins the sea or any other river, such river is called __________?
- when ever a sloping face of river bank is protected by stone pitching against scour, the pitching is extended beyond the toe to the river side that is called__________?
- The groyne pointing upwards direction of flow is called __________?
- If the weir flood is designed continuous with divide piers as reinforced structure,such that the weight of divide piers, keep the structure safe against uplift, is called__________?
- The rise in river water level at up stream due to construction of weir is called__________?
- Silt free water should be supplied to the canals through__________?
- The wall of masonry or concrete, constructed at 90° to the axis of weir to separate normal weir from under sluices is called__________?
- A fish ladder is device by which flow energy can be dissipated in such a manner as to provide easy access to the downstream fish to come on upstream side, the velocity of flow varies from__________?
- In high floods, to avoid spilling of flood water over the gates, a wall is provided from pond level to high Flood level. This wall spans for the entire length of regulator, rest on piers, sustain water pressure by its weight called__________?
- The structures, which are constructed on the river bed upstream of head regulator. With this clear water enters in canal such structures are called__________?
- 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 __________?