Water Management MCQs for Entry Test with Answers and Explanations [PDF]

The force with which the particles of same body are held together is called__________?

Option A: Cohesion

Option B: Adhesion

Option C: Surface tension

Option D: All are correct

Correct Answer: Cohesion ✔

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The horizontal flow of water in irrigation channel or canal leading to water loss is called as:_________?

Option A: Infiltration

Option B: Percolation

Option C: Seepage

Option D: All of these

Correct Answer: Seepage ✔

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How much annual rain fall is in sargodha?

Option A: 400 mm

Option B: 450 mm

Option C: 500 mm

Option D: 550 mm

Correct Answer: 400 mm ✔

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The value of coefficient of discharge in comparison to cofficient of velocity is found to be __________?

Option A: Lesser

Option B: More

Option C: Equal

Option D: Zero

Correct Answer: Lesser ✔

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Those crops which increase the nitrogen content of the soil and hence the fertility also are called __________?

Option A: Leguminous crops

Option B: Cash crops

Option C: Fodder

Option D: Food crops

Correct Answer: Leguminous crops ✔

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The losses of irrigation water due to the seepage but That. does not join the under ground reservoir is called __________?

Option A: Seepage losses

Option B: Absorption losses

Option C: Evaporation losses

Option D: Percolation losses

Correct Answer: Absorption losses ✔

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The force with which the distinct bodies held together when their surfaces are brought in contact to each other is called __________?

Option A: Adhesion

Option B: Cohesion

Option C: Surface tension

Option D: All are correct

Correct Answer: Adhesion ✔

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The level above the or below the sea level which is also called zero level or datum is called __________?

Option A: Reduce level

Option B: Positive level

Option C: Soil level

Option D: Negative level

Correct Answer: Reduce level ✔

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The significant damage to crop generally occurs when capillary meniscus reaches permanent wilting point known as __________?

Option A: Unavailable moisture

Option B: Hygroscopic moisture

Option C: Equivalent moisture

Option D: A and B

Correct Answer: A and B ✔

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To pack with clay material generally for the purpose of checking leakage of water is called __________?

Option A: Pug

Option B: Cohesive

Option C: Seal

Option D: Repair

Correct Answer: Pug ✔

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Onion is a __________ rooted crop?

Option A: Shallow

Option B: Deep

Option C: Non-rooted

Option D: Spread

Correct Answer: Shallow ✔

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The _________ analysis of earth dam foundation against shear must be carried out when the foundation is kept on fine loose cohesion less material?

Option A: Stability

Option B: Suitability

Option C: Overturning

Option D: Failure

Correct Answer: Stability ✔

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In ogee spillway the discharge is directly proportional to __________?

Option A: H1/2

Option B: H1/3

Option C: H3/2

Option D: H1/4

Correct Answer: H3/2 ✔

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The sheet or small layer of water flowing over an ogee spillway is called __________?

Option A: Thin layer

Option B: Nappe

Option C: Water sheet

Option D: Water spillway

Correct Answer: Nappe ✔

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A spoil bank is formed when the volume of excavated soil is __________ of embankment filling?

Option A: Less than

Option B: Excess

Option C: Equal to

Option D: Not required

Correct Answer: Excess ✔

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The counter berm for a canal is provided so as to contain the saturation gradient line __________ the bank?

Option A: Out of

Option B: Within

Option C: Above

Option D: Below

Correct Answer: Within ✔

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It is important to keep the saturation gradient line within the body of a embankment of canal, the saturation gradient line in loomy soils lie at__________?

Option A: 1:2 to 1:4

Option B: 1:3 to 1:5

Option C: 1:4 to 1:6

Option D: 1:5 to 1:7

Correct Answer: 1:4 to 1:6 ✔

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For an economical design of gravity dam, the shear friction factor causec compression strength should lie between__________?

Option A: 1.5 to 4.0

Option B: 2.0 to 4.0

Option C: 2.5 to 4.5

Option D: 3 to 5

Correct Answer: 1.5 to 4.0 ✔

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Water logging caused by __________ water, which during excessive irrigation percolates down and join under ground water table?

Option A: Capillary

Option B: Hygroscopic

Option C: Gravity

Option D: Free

Correct Answer: Gravity ✔

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The run-off from catchment areas, Roads, buildings and other fallow lands is called __________?

Option A: Rain water

Option B: Surface run-off

Option C: Storm water

Option D: Dry weather flow

Correct Answer: Storm water ✔

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The process to dilute the available salts from root Zone by providing simply canal water is known as __________?

Option A: Reclamation

Option B: Leaching

Option C: Recultivation

Option D: de-salting

Correct Answer: Leaching ✔

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Water logging and soil salinization is a twin menace which has effected the agriculture sector severely, about __________ hectares of land are wasted yearly?

Option A: 30,000

Option B: 35,000

Option C: 40,000

Option D: 45,000

Correct Answer: 40,000 ✔

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A series of vertical steps in a stream made to avoid soil scouring is called __________?

Option A: Levees

Option B: Embankment

Option C: Cascades

Option D: Banks

Correct Answer: Cascades ✔

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The ratio between the force causing a body to slide along a plane and the force normal to the plane is called __________?

Option A: Coefficient of friction

Option B: Coefficient of internal friction

Option C: Coefficient of resistance

Option D: All are correct

Correct Answer: Coefficient of friction ✔

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The science of water which deals with the depletion and replenishment of water resources is called__________?

Option A: Hydrology

Option B: Biology

Option C: Hydrography

Option D: Histology

Correct Answer: Hydrology ✔

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The maximum rate at which the soil in given condition can absorb water is called __________?

Option A: Field Capacity

Option B: Capillarity

Option C: Infiltration capacity

Option D: All are correct

Correct Answer: Infiltration capacity ✔

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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__________?

Option A: Soil-moisture deficiency

Option B: Field-moisture deficiency

Option C: Equivalent-moisture deficiency

Option D: a and b are correct

Correct Answer: a and b are correct ✔

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In the initial stage of rainfall, when soil moisture available in the root zone is very low, the rate of infiltration ?

Option A: Increases

Option B: Reduces

Option C: remain stagnant

Option D: Normal

Correct Answer: Increases ✔

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To be more close to the actual field conditions, some times artificial rain tests conducted, the instrument used is called __________?

Option A: Infiltrometer

Option B: I.C. curve

Option C: Rain simulator

Option D: v Hydrometer

Correct Answer: Rain simulator ✔

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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 __________?

Option A: Influent stream

Option B: Effluent stream

Option C: Storm water stream

Option D: Seepage stream

Correct Answer: Effluent stream ✔

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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__________?

Option A: Water

Option B: Snow

Option C: Ice particles

Option D: Gas

Correct Answer: Gas ✔

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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 __________?

Option A: Vapour pressure

Option B: Saturation pressure

Option C: Partial pressure

Option D: Atmospheric pressure

Correct Answer: Saturation pressure ✔

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The amount of moisture content present in the air, when it is expressed as weight per unit volume is called __________?

Option A: Humidity

Option B: Absolute Humidity

Option C: relative humidity

Option D: All are correct

Correct Answer: Humidity ✔

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A cloud is formed due to condensation. it consists of a small particle of ice an. small droplets of water, having diameter about __________microns?

Option A: 30

Option B: 35

Option C: 40

Option D: 45

Correct Answer: 40 ✔

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The percentage of culturable commended area, irrigated during the year to the total culturable commanded area on a outlet or channel is called__________?

Option A: Annual Intensity

Option B: Gross commended area

Option C: Culturable Commended area

Option D: Total irrigable Area

Correct Answer: Annual Intensity ✔

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Hydraulic structures are designed for a safe flow of flood. The floods which are equal in designed magnitude life of the project is called __________?

Option A: High floods

Option B: Ordinary floods

Option C: Low floods

Option D: Probable flood

Correct Answer: Probable flood ✔

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A particular flood which can occur in the basin in the worst meteorological and hydrological conditions is called __________?

Option A: Standard flood

Option B: Very high flood

Option C: Maximum probable flood

Option D: Storm water flood

Correct Answer: Maximum probable flood ✔

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If a river or stream is collecting sediment and is building up dunes in its bed is called __________?

Option A: Stable river

Option B: Sub-stable river

Option C: Aggrading river

Option D: Sediment river

Correct Answer: Aggrading river ✔

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A river before its joins the sea, gets divided into small channels, thus forming a Triangular shape called __________?

Option A: Unstable river

Option B: Deltaic river

Option C: Stable river

Option D: Degrading river

Correct Answer: Deltaic river ✔

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In a river the flood water dries up before it joins the sea or any other river, such river is called __________?

Option A: Flashy

Option B: Virgin

Option C: Tidal

Option D: Deltaic

Correct Answer: Virgin ✔

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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__________?

Option A: Toe wall

Option B: Launching apron

Option C: Protective wall

Option D: Guide bank

Correct Answer: Launching apron ✔

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The groyne pointing upwards direction of flow is called __________?

Option A: Attracting

Option B: Repelling

Option C: Impermeable

Option D: Permeable

Correct Answer: Repelling ✔

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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__________?

Option A: Non-gravity weir

Option B: Gravity weir

Option C: Sharp crested weir

Option D: Rectangular weir

Correct Answer: Non-gravity weir ✔

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The rise in river water level at up stream due to construction of weir is called__________?

Option A: Pond level

Option B: HFL

Option C: Afflux

Option D: FSL

Correct Answer: Afflux ✔

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Silt free water should be supplied to the canals through__________?

Option A: Under sluices

Option B: Head sluices

Option C: Scouring sluices

Option D: Sluice gates

Correct Answer: Head sluices ✔

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The wall of masonry or concrete, constructed at 90° to the axis of weir to separate normal weir from under sluices is called__________?

Option A: Divide wall

Option B: Retaining wall

Option C: Toe wall

Option D: All are correct

Correct Answer: Divide wall ✔

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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__________?

Option A: 2.0 – 2.5 – m/sec

Option B: 2.5 – 3 m/sec

Option C: 3.0 – 3.5 m/sec

Option D: 3.5 – 4.0 m/sec

Correct Answer: C. 3.0 – 3.5 m/sec ✔

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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__________?

Option A: Retaining wall

Option B: Divide wall

Option C: Breast wall

Option D: Cantilever wall

Correct Answer: Breast wall ✔

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The structures, which are constructed on the river bed upstream of head regulator. With this clear water enters in canal such structures are called__________?

Option A: Silt excluders

Option B: Silt ejectors

Option C: Vortex pipes

Option D: Silt control structures

Correct Answer: Silt excluders ✔

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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__________?

Option A: Afflux

Option B: Final depth

Option C: Sequent depth

Option D: Down stream water depth

Correct Answer: Sequent depth ✔

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Mostly the hydraulic structures founded on __________ soils fails because of undermining and uplift pressure?

Option A: Stable

Option B: Rocky

Option C: Impermeable

Option D: Permeable

Correct Answer: Permeable ✔

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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__________?

Option A: Submerged exit gradient

Option B: Critical exit gradient

Option C: Balanced exit gradient

Option D: All are correct

Correct Answer: Critical exit gradient ✔

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Now- a -days the hydraulic structures are designed. Keeping in view the flow net, this was given by __________?

Option A: Blight

Option B: Khosla

Option C: Lane

Option D: Darcy

Correct Answer: Khosla ✔

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To avoid scouring from end of structure, it is necessary to provide a __________ at the exit point?

Option A: Vertical cutoff

Option B: Stone apron

Option C: Stone boom

Option D: Stone blocks

Correct Answer: Vertical cutoff ✔

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For strong Hydraulic jump containing maximum energy, the down stream glacis should be sloped at a slope of __________ to dissipate max: energy?

Option A: 2:1 to 2.5:1

Option B: 2.5:1 to 3:1

Option C: 3:1 to 5:1

Option D: 5:1 to 6

Correct Answer: 3:1 to 5:1 ✔

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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__________?

Option A: Retrogression

Option B: Lowering down of bed

Option C: Ponding on down stream

Option D: All are correct

Correct Answer: Retrogression ✔

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The water way from a weir is determined by using Lacey’s wetted perimeter i.e. P=_______(Q)1/2 ?

Option A: 3.50

Option B: 3.75

Option C: 4.75

Option D: 5.75

Correct Answer: 4.75 ✔

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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 __________?

Option A: Water pool

Option B: Cistern

Option C: Down stream pond

Option D: Water cushion

Correct Answer: Cistern ✔

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A module or outlet in which discharge depends upon the difference of head between distributary and the water course is called __________?

Option A: Non-modular

Option B: Modular

Option C: Semi-modular

Option D: Rigid module

Correct Answer: Non-modular ✔

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An outlet through which the discharge depends upon the water level in the distributary is called __________?

Option A: Rigid module

Option B: Flexible module

Option C: Non-flexible

Option D: Non-modular

Correct Answer: Flexible module ✔

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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__________?

Option A: Flexibility

Option B: Proportionally

Option C: Setting

Option D: Sensitivity

Correct Answer: Sensitivity ✔

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When FSL of the canal is sufficiently below the bottom of the drain, so that water flows freely under gravity, such structures is called__________?

Option A: Syphon

Option B: Syphon – Aqueduct

Option C: Super-passage

Option D: Canal-syphon

Correct Answer: Super-passage ✔

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A structure provided when a large canal a big drainage channel approach other practically at the same level is called__________?

Option A: Super passage

Option B: Level crossing

Option C: Canal crossing

Option D: Drainage crossing

Correct Answer: Level crossing ✔

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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 __________?

Option A: Inlet

Option B: Out let

Option C: Module

Option D: Exit

Correct Answer: Out let ✔

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The total dissolved solids in drinking water should not exceed__________?

Option A: 1000 mg/litre

Option B: 1200 mg/litre

Option C: 1300 mg/litre

Option D: 1500 mg/litre

Correct Answer: 1500 mg/litre ✔

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On relative basis, when one soil is eroded as compared to other soil under same conditions, this property is called __________?

Option A: Compact ability

Option B: Erodibility

Option C: Viscosity

Option D: All are correct

Correct Answer: Erodibility ✔

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Darcy formula for loss of head in pipes is given by, hf=4fl v2 / __________?

Option A: 2gd

Option B: gd

Option C: g2d

Option D: gd2

Correct Answer: 2gd ✔

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The aeration of water is done to remove __________?

Option A: Odour

Option B: Smell

Option C: Colour

Option D: Taste

Correct Answer: Colour ✔

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Velocity of flow in a sewer must be form __________ to ?

Option A: 1 m / sec to 3m/ sec

Option B: 3m / sec to 4m/ sec

Option C: 4m / sec to 4.5 ml sec

Option D: 4.5 ml sec to 5 m/ sec

Correct Answer: 1 m / sec to 3m/ sec ✔

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A digging out of earth to make trench for any engineering purpose is called __________?

Option A: Excavation

Option B: Cavitations

Option C: borrow pitting

Option D: Earth filling

Correct Answer: Excavation ✔

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The water in swimming pools can be __________ by using any one from the following, chlorine-ultraviolet rays and bromine t ?

Option A: Disinfected

Option B: Infected

Option C: Cleaned

Option D: Iodized

Correct Answer: Disinfected ✔

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Mostly the salt of calcium and Magnesium can not cause __________?

Option A: Salinity

Option B: Alkalinity

Option C: Poisoning

Option D: Turbidity

Correct Answer: Poisoning ✔

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An open cut given in a canal bank, suitably protected by stone pitching to the upland drainage water into the canal is called __________?

Option A: Inlet

Option B: Out let

Option C: entrance

Option D: Mixing

Correct Answer: Inlet ✔

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When FSL of the canal is sufficiently above the bed level of drainage so that canal flows under syphonis action, the structure is called __________?

Option A: Super passage

Option B: Syphon – Aqueduct

Option C: Canal-syphon

Option D: Aqueduct

Correct Answer: Canal-syphon ✔

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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__________?

Option A: Aqueduct

Option B: Syphon-aqueduct

Option C: Cross-Drainage

Option D: Non-gravity structure

Correct Answer: Aqueduct ✔

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When the rate of change of discharge of outlet equals the rate of change of discharge of the channel, the out let is called __________?

Option A: Sensitive

Option B: Flexible

Option C: Proportional

Option D: Non-flexible

Correct Answer: Proportional ✔

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A module or outlet in which discharge is fixed and limited, irrespective fluctuations in water levels in distributary is called __________?

Option A: Modular

Option B: Non-modular

Option C: Semi-modular

Option D: Semi – Rigid

Correct Answer: Modular ✔

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The total length of impervious floor on down stream of the hydraulic structure is determined by Bligh’s Theory__________?

Option A: Lane

Option B: Darcy

Option C: Khosla

Option D: All are correct

Correct Answer: Khosla ✔

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The inverted filter consists layer of materials of increasing __________ from bottom to top?

Option A: Piping

Option B: Under mining

Option C: Permeability

Option D: Up thrust pressure

Correct Answer: Permeability ✔

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The invented filter is provided just after the end of concrete floor to reduce () possibility of __________?

Option A: Piping

Option B: Under mining

Option C: Up thrust

Option D: a and b are correct

Correct Answer: a and b are correct ✔

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Khosla provided a seepage theory for design of Hydraulic structures called__________?

Option A: Theory of seepage

Option B: Method of independent variables

Option C: Method of cutoffs

Option D: Creep theory

Correct Answer: Method of independent variables ✔

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According to Mr. Khosla, the seeping water creates undermining and the undermining starts from__________?

Option A: Down stream to up stream

Option B: Up stream to down stream

Option C: Top to bottom

Option D: Bottom to top

Correct Answer: Down stream to up stream ✔

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To keep the Hydraulic structure safe against undermining the __________ should be safe?

Option A: Exit gradient

Option B: Hydraulic gradient

Option C: Creep length

Option D: Critical exit gradient

Correct Answer: Exit gradient ✔

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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 __________?

Option A: Hydraulic gradient

Option B: Head loss

Option C: Creep length

Option D: Exit gradient

Correct Answer: Hydraulic gradient ✔

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According to Blight, the percolating water seeps along the lower contour of the hydraulic structure, the length traversed by this water is called __________?

Option A: Creep length

Option B: Seeping length

Option C: Piping

Option D: Undermining

Correct Answer: Creep length ✔

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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__________?

Option A: Reynolds

Option B: Froude No

Option C: Webber

Option D: Darcy,s law

Correct Answer: Froude No ✔

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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__________?

Option A: Water wave

Option B: Water tide

Option C: Hydraulic jump

Option D: Afflux

Correct Answer: Hydraulic jump ✔

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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__________?

Option A: High flood level

Option B: Dangerous condition

Option C: Hydraulic design condition

Option D: Worst condition

Correct Answer: Worst condition ✔

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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__________?

Option A: Head Regulator

Option B: Cross-Regulator

Option C: Escape

Option D: All are correct

Correct Answer: Head Regulator ✔

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The various works constructed on river side to control the flow and pass it safely from hydraulic structures are called __________?

Option A: River controlling works

Option B: River Training works

Option C: Marginal Embankment

Option D: Guide Banks

Correct Answer: River Training works ✔

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The under sluices in a weir are provided, at the level of upstream floor dispose off the sediment deposited on downstream is called__________?

Option A: Under sluices

Option B: Head sluices

Option C: Scouring sluices

Option D: Sluice gates

Correct Answer: Scouring sluices ✔

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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__________?

Option A: HFL

Option B: FSL

Option C: Pond level

Option D: Canal level

Correct Answer: Pond level ✔

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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?

Option A: Afflux

Option B: Hydraulic jump

Option C: Pond level

Option D: HFL

Correct Answer: Hydraulic jump ✔

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When the weight of weir balances the up lift pressure caused by the head of the water seeping below the weir bed is called __________?

Option A: Cippollite weir

Option B: Broad crested weir

Option C: Gravity weir

Option D: Non-gravity weir

Correct Answer: Gravity weir ✔

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The groyne pointing downwards in the direction of flow in fiver is called__________?

Option A: Permeable

Option B: Impermeable

Option C: repelling

Option D: Attracting

Correct Answer: Attracting ✔

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In alluvial river due to the action of centrifugal force, bends are developed by scouring on concave and silting on convex __________?

Option A: Silting & scouring

Option B: Meandering

Option C: Aggrading

Option D: Degrading

Correct Answer: Meandering ✔

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If in a river the flood rises and falls suddenly due to storm rain, then such river is called __________?

Option A: Virgin

Option B: Tidal

Option C: Flashy

Option D: Deltaic

Correct Answer: Flashy ✔

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A river which does not change its alignment – slope and its regime significantly is called__________?

Option A: Aggrading river

Option B: Degrading river

Option C: Stable river

Option D: Deltaic River

Correct Answer: Stable river ✔

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The area irrigated in the year and it grows crops on which water rates are leveled is called__________?

Option A: Area Assessed

Option B: Area leased

Option C: Area irrigated

Option D: Area cultivated

Correct Answer: Area Assessed ✔

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The floods which exceeds the designed magnitude of a reservoir is called __________?

Option A: High floods

Option B: Standard protects flood

Option C: Intensive flood

Option D: Storm flood

Correct Answer: Standard protects flood ✔

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