4001. If E1 is the energy before the hydraulic jump and E2 is the energy after the hydraulic jump the efficiency of jump is then given by _____________________?
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A. E1 / E2

B. E2 / E1

C. E2 E1

D. E1 E2

4002. Onion is a ___________ rooted crop?
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A. Deep

B. Non-rooted

C. Shallow

D. Spread

4003. The water way from a weir is determined by using Laceys wetted perimeter i.e. P=_______(Q)1/2 ?
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A. 5.75

B. 4.75

C. 3.5

D. 3.75

4004. An open cut given in a canal bank, suitably protected by stone pitching to the upland drainage water into the canal is called ___________________?
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A. Out let

B. entrance

C. Mixing

D. Inlet
4005. If the duration of a unit hydrograph approaches zero, the resulting unit hydrograph is called __________________?
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A. Instantaneous unit hydrograph

B. Unit hyetgoraph

C. Intensity unit hydrograph

D. Unit hydrograph

4006. When FSL of the canal is sufficiently above the bed level of drainage so that canal flows under syphonis action, the structure is called _____________________?
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A. Aqueduct

B. Canal-syphon

C. Syphon Aqueduct

D. Super passage

4007. The process to dilute the available salts from root Zone by providing simply canal water is known as __________________?
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A. de-salting

B. Leaching

C. Recultivation

D. Reclamation

4008. The unit of volume of water used in irrigation practice in FPS system is Acre-Foot. there fore one Acre- Foot is equal to ___________________?
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A. 43560 cubic feet

B. 40560ft3

C. 42560ft3

D. 41560ft3

4009. A module or outlet in which discharge is fixed and limited, irrespective fluctuations in water levels in distributary is called _________________?
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A. Non-modular

B. Semi-modular

C. Modular

D. Semi Rigid

4010. The season that starts from 1st April and end on 30th September and run for 183 days is called _____________________?
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A. Rice season

B. Rabi season

C. Kharif season

D. Cotton season

4011. The counter berm for a canal is provided so as to contain the saturation gradient line _____________ the bank?
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A. Out of

B. Within

C. Below

D. Above

4012. _________% of total global water is fresh and its major portion is obtained from Rains ?
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A. 2.5%

B. 3.20%

C. 2%

D. 3%

4013. 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______________?
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A. Critical exit gradient

B. Balanced exit gradient

C. Submerged exit gradient

D. All are correct

4014. The force with which the distinct bodies held together when their surfaces are brought in contact to each other is called _________________?
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A. Surface tension

B. Cohesion

C. All are correct

D. Adhesion
4015. The value of coefficient of discharge in comparison to cofficient of velocity is found to be ____________________?
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A. Zero

B. Equal

C. Lesser

D. More

4016. The disposal of sewage by allowing it to flow and Soak into specially leveled farm land for cultivation purpose is called _____________________?
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A. Trickle irrigation

B. Check irrigation

C. Border irrigation

D. Broad irrigation
4017. 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__________________?
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A. Ponding on down stream

B. All are correct

C. Retrogression

D. Lowering down of bed

4018. For an economical design of gravity dam, the shear friction factor causec compression strength should lie between____________________?
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A. 3 to 5

B. 2.5 to 4.5

C. 1.5 to 4.0

D. 2.0 to 4.0

4019. To pack with clay material generally for the purpose of checking leakage of water is called __________________?
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A. Pug

B. Repair

C. Cohesive

D. Seal

4020. Land containing high percentage of alkalies may be reclaimed by addition of_____________________?
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A. Caso4

B. Caco3

C. Gypsum

D. Chemicals

4021. 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__________________?
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A. Guide bank

B. Launching apron

C. Toe wall

D. Protective wall

4022. 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___________________?
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A. Non-gravity structure

B. Aqueduct

C. Cross-Drainage

D. Syphon-aqueduct

4023. A structure constructed in channel width having narrow throat and raised floor in bottom, used for measuring discharge is called _____________________?
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A. Venturimeter

B. regulator

C. Cippoletti weir

D. Venturiflume
4024. In alluvial river due to the action of centrifugal force, bends are developed by scouring on concave and silting on convex _____________________?
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A. Aggrading

B. Silting & scouring

C. Meandering

D. Degrading

4025. Velocity of flow in a sewer must be form ______________ to ?
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A. 1 m / sec to 3m/ sec

B. 4.5 ml sec to 5 m/ sec

C. 4m / sec to 4.5 ml sec

D. 3m / sec to 4m/ sec

4026. The ratio between the force causing a body to slide along a plane and the force normal to the plane is called __________________?
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A. Coefficient of friction

B. All are correct

C. Coefficient of internal friction

D. Coefficient of resistance

4027. The Indus plain is the main agricultural producing region in the country which receives about________________m m of rain fall annually?
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A. 200 mm

B. 175 mm

C. 150 mm

D. 100 mm

4028. 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 _____________________?
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A. Out let

B. Module

C. Inlet

D. Exit

4029. The losses of irrigation water due to the seepage but That. does not join the under ground reservoir is called __________________?
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A. Percolation losses

B. Absorption losses

C. Seepage losses

D. Evaporation losses

4030. For strong Hydraulic jump containing maximum energy, the down stream glacis should be sloped at a slope of ______________ to dissipate max: energy?
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A. 2.5:1 to 3:1

B. 2:1 to 2.5:1

C. 3:1 to 5:1

D. 5:1 to 6

4031. A water flow available in the drains without irrigation season i.e.flow of sanitary sewage is called____________________?
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A. Municipal flow

B. Surface flow

C. Waste water flow

D. Dry weather flow
4032. Theoretical velocity of the jet at Vena Contracta is determined by ________________?
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A. 2gh

B. 2(gh)1/2

C. 2g (h)1/2

D. (2 gh)1/2
4033. A mine or tunnel for collecting seepage water in rock or dam is called ____________________?
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A. Water tunnel

B. Seepage tunnel

C. Seepage Drain

D. Seepage gallery
4034. Bouyant force is equal to the ___________ of liquid displaced by the body in water mass?
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A. Specific weight

B. Volume

C. Weight

D. Specific gravity

4035. When FSL of the canal is sufficiently below the bottom of the drain, so that water flows freely under gravity, such structures is called_____________________?
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A. Syphon Aqueduct

B. Canal-syphon

C. Super-passage

D. Syphon

4036. When the rate of change of discharge of outlet equals the rate of change of discharge of the channel, the out let is called __________________?
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A. Non-flexible

B. Flexible

C. Proportional

D. Sensitive

4037. The maximum rate at which the soil in given condition can absorb water is called ___________________?
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A. Field Capacity

B. Infiltration capacity

C. Capillarity

D. All are correct

4038. A structure provided when a large canal a big drainage channel approach other practically at the same level is called__________________?
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A. Level crossing

B. Canal crossing

C. Drainage crossing

D. Super passage

4039. According to Chezys formula, the discharge through an open channel is equal to _________________?
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A. Ac?R.S

B. A (c.A/pi) <sup>1/2 </sup>

C. C (mi) <sup>1/2 </sup>

D. A (cmi)<sup>1/2 </sup>

4040. Total energy line (T.E.L) represents the sum of ________________________?
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A. Velocity head + potential head + datum head

B. Pressure head + kinetic head and datum head

C. Velocity head + kinetic head + datum head

D. The energy head + potential head + datum head

4041. A line shown on a map, drawn between the points of equal levels or heads is called ____________________?
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A. Contour line

B. Check line

C. All are correct

D. Ordinate line

4042. 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__________________?
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A. a and b are correct

B. Field-moisture deficiency

C. Soil-moisture deficiency

D. Equivalent-moisture deficiency

4043. The difference between saturation vapour pressure and actual vapour pressure at a constant temperature is called ___________________?
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A. Saturation vapour pressure

B. Partial pressure

C. Actual vapour pressure

D. Saturation deficit
4044. The discharge of a well per unit draw down usually expressed as gallons or liters per minute is called ____________________?
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A. Discharge

B. All are correct

C. Specific capacity

D. Specific volume

4045. The property of soil which indicates the volume of water stored in the formation is called ___________________?
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A. Specific yield

B. Porosity

C. Field capacity

D. Specific retention

4046. The lower limit of factor of safety against over turning in a gravity is _______________________?
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A. 1.3

B. 1.5

C. 1.4

D. 1.6

4047. 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___________________?
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A. 1:2 to 1:4

B. 1:3 to 1:5

C. 1:4 to 1:6

D. 1:5 to 1:7

4048. 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_______________________?
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A. All are correct

B. Escape

C. Cross-Regulator

D. Head Regulator
4049. The soil which are formed due to the weathering effects particularly by movement of water and are high permeable are called _________________?
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A. Alluvial soils

B. Non-alluvial soils

C. Semi-impervious soils

D. Impervious soils

4050. Estimated quantity of global water is __________which covers about 70% of earth?
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A. 1.33x109km3

B. 1.35x109km3

C. 1.32x109km3

D. 1.30x109km3