Most Latest Civil Engineering MCQs – Irrigation, Water Resources Engineering and Hydrology MCQs Latest
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Latest Civil Engineering MCQs
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Latest Irrigation, Water Resources Engineering and Hydrology Mcqs
The most occurred mcqs of Irrigation, Water Resources Engineering and Hydrology in past papers. Past papers of Irrigation, Water Resources Engineering and Hydrology Mcqs. Past papers of Irrigation, Water Resources Engineering and Hydrology Mcqs . Mcqs are the necessary part of any competitive / job related exams. The Irrigation, Water Resources Engineering and Hydrology Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Irrigation, Water Resources Engineering and Hydrology Mcqs. The Important series of Irrigation, Water Resources Engineering and Hydrology Mcqs are given below:
Which of the following methods is used to estimate flood discharge based on high water marks left over in the past ?
A. slope-area method
B. moving boat method
C. area-velocity method
D. ultra-sonic method
The maximum rainfall depth of 300 mm in 24 hours has a return period of 100 years. The probability of 24 hours rainfall equal to or greater than 300 mm occurring at least once in 10 years is given by_____________?
A. (0.9)’00
B. 1 – (0.99)10
C. (0.99)10
D. l-(0.9)100
A hydroelectric scheme operating under a head of 80 m will be classified as_____________?
A. medium head scheme
B. low head scheme
C. high head scheme
D. none of the above
The net head under which the turbine reaches its peak efficiency at synchronous speed is called________________?
A. design head
B. gross head
C. rated head
D. operating head
The net speed under which the turbine reaches its peak efficiency is called_________________?
A. design speed
B. gross speed
C. rated speed
D. operating speed
Lining of irrigation channels________________?
A. does not change the water logging area
B. decreases the water logging area
C. increases the water logging area
D. none of the above
A river training work is generally required when the river is_______________?
A. degrading type
B. aggrading type
C. meandering type
D. both (A) and (B)
Irrigation, Water Resources Engineering and Hydrology MCQs
The main cause of meandering is________________?
A. degradation
B. presence of an excessive bed slope in the river
C. the extra turbulence generated by the excess of river sediment during floods
D. none of the above
Tortuosity of a meandering river is the ratio of__________________?
A. meander length to meander belt
B. meander belt to meander length
C. curved length along the channel to the direct axial length of the river reach
D. direct axial length of the river reach to curved length along the channel
The aqueduct or super passage type of works are generally used when_______________?
A. high flood drainage discharge is small
B. high flood drainage discharge is large and continues for a long time
C. high flood drainage discharge is large and short lived
D. none of the above
The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in___________________?
A. aqueduct and super passage
B. aqueduct and syphon aqueduct
C. super passage and canal syphon
D. level crossing
Which of the following canal outlets maintains a constant discharge ?
A. flexible outlet
B. non-modular outlet
C. rigid module
D. none of the above
Which of the following can be used as a meter fall ?
A. vertical drop fall
B. unflumed glacis fall
C. flumed glacis fall
D. all of the above
Which of the following types of falls use parabolic glacis for energy dissipation ?
A. glacis fall
B. vertical drop fall
C. Montague type fall
D. inglis fall
Which of the following is a flexible outlet ?
A. Gibb’s outlet
B. Kennedy’s gauge outlet
C. submerged pipe outlet
D. none of the above
If the critical shear stress of a channel is xc, then the average value of shear stress required to move the grain on the bank is___________________?
A. xc
B. 0.75 TC
C. 0.5 xc
D. 1.33 TC
For a proportional outlet, the flexibility is______________?
A. between zero and 1
B. zero
C. 1
D. greater than 1
Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey’s theory will be_________?
A. 57 m
B. 38 m
C. 19 m
D. 76 m
The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by______________?
A. 7 RS
B. 11 RS
C. 4 RS
D. 15 RS
Silt excluders are constructed on the________________?
A. river bed upstream of head regulator
B. canal bed upstream of head regulator
C. river bed downstream of head regulator
D. canal bed downstream of head regulator
A divide wall is provided_______________?
A. at right angle to the axis of weir
B. at an inclination to the axis of weir
C. parallel to the axis of weir and down-stream of it
D. parallel to the axis of weir and up-stream of it
Generally the weir is aligned at right angles to the direction of the main river current because______________?
A. it is economical
B. it gives better discharging capacity
C. it ensures less length of the weir
D. all of the above
For the upstream face of an earthen dam, the most adverse condition for stability of slope is_______________?
A. sudden drawdown
B. during construction
C. steady seepage
D. sloughing of slope
In case of non-availability of space due to topography, the most suitable spillway is________________?
A. chute spillway
B. shaft spillway
C. straight drop spillway
D. ogee spillway
Coefficient of discharge of an ogee spillway________________?
A. depends on downstream apron interference and downstream submergence
B. depends on depth of approach and upstream slope
C. remains constant
D. both (A) and (B)
The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are_________________?
A. at right angle and parallel to weir crest
B. parallel to weir crest in both
C. parallel and at right angle to weir crest
D. at right angle to weir crest in both
Main purpose of mean water training for rivers is________________?
A. to provide sufficient depth of water in navigable channels, during low water periods
B. flood control
C. to preserve the channel in good shape by efficient disposal of suspended and bed load
D. all of the above
Seepage through embankments in an earthen dam is controlled by_______________?
A. relief wells
B. drainage filters
C. drain trenches
D. provision of downstream berms
As compared to gravity dams, earthen dams__________________?
A. are less susceptible to failure
B. are costlier
C. require sound rock foundations
D. require less skilled labour
The maximum permissible eccentricity for no tension at the base of a gravity dam is__________________?
A. B/3
B. B/2
C. B/4
D. B/6
Engineering Economy MCQs – Civil Engineering
The major resisting force in a gravity dam is___________________?
A. wave pressure
B. water pressure
C. self-weight of dam
D. uplift pressure
Horizontal acceleration due to earthquake results in______________?
A. inertia force into the body of the dam
B. hydrodynamic pressure
C. both (A) and (B)
D. none of the above
The uplift pressure on a dam can be controlled by_________________?
1) constructing cutoff under upstream face
2) constructing drainage channels bet-ween the dam and its foundation
3) by pressure grouting in foundation
The corret answer is?
A. both (1) and (2)
B. only (1)
C. both (1) and (3)
D. (1), (2) and (3)
The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after_________________?
A. 50 years
B. 200 years
C. 150 years
D. 250 years
For a flood control reservoir, the effective storage is equal to_______________?
A. useful storage + surcharge storage
B. useful storage – valley storage
C. useful storage + surcharge storage + valley storage
D. useful storage + surcharge storage -valley storage
The useful storage is the volume of water stored in the reservoir between________________?
A. normal pool level and maximum pool level
B. minimum pool level and normal pool level
C. minimum pool level and maximum pool level
D. river bed and minimum pool level
A deep well_________________?
A. is weaker structurally than a shallow well
B. has more discharge than a shallow well
C. is always deeper than a shallow well
D. both (A) and (B)
If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by_______________?
A. T = kd
B. T= Vkd
C. T = k/d
D. k= VTd
The relation between probability (P) and recurrence interval (T) is given by_________________?
A. PT = 1
B. P/T = 1
C. PT2 = 1
D. P/T2 = 1
The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of_________________?
A. same and shorter duration
B. same duration only
C. same and longer duration
D. any duration
The best unit duration of storm for a unit hydrograph is________________?
A. one-half of basin lag
B. one-fourth of basin lag
C. 1 hour
D. equal to basin lag
The rainfall on five successive days were measured as 100 mm, 80 mm, 60 mm, 40 mm and 20 mm respectively. If the infiltration index or the storm loss rate for the catchment area is earlier estimated as 50 mm/day, the total surface run off will be________________?
A. 60 mm
B. 50 mm
C. 90 mm
D. 140 mm
A current meter is used to measure the__________________?
A. velocity of flow of water
B. discharge
C. depth of flow of water
D. none of the above
The runoff increases with________________?
A. increase in intensity of rain
B. increase in permeability of soil
C. increase in infiltration capacity
D. all of the above
When surface of transpiration is submerged under water, then potential evapotranspiration is________________?
A. much more than evapotranspiration
B. equal to evapotranspiration
C. much less than evapotranspiration
D. equal to or less than evapotranspi-ration
Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation ?
A. concave water surface
B. convex water surface
C. flat water surface
D. independent of shape of water surface
A raingauge should preferably be fixed________________?
A. under the tree
B. near the building
C. in an open space
D. in a closed space
Cyclonic precipitation is caused by lifting of an air mass due to________________?
A. pressure difference
B. natural topographical barriers
C. temperature difference
D. all of the above
Infiltration is the_______________?
A. movement of water through the soil
B. absorption of water by soil surface
C. both of the above
D. none of the above
The depth of water required to bring the soil moisture content of a given soil upto its field capacity is called_________________?
A. equivalent moisture
B. hygroscopic water
C. soil moisture deficiency
D. pellicular water
Hydrograph is the graphical representation of________________?
A. runoff and time
B. ground waterflow and time
C. surface runoff and time
D. rainfall and time
MCQs of Civil Engineering Latest
The amount of irrigation water required to meet the evapotranspiration needs of the crop during its full growth is called________________?
A. consumptive use
B. effective rainfall
C. consumptive irrigation requirement
D. net irrigation requirement
The ratio of the quantity of water stored in the root zone of the crops to the quantity of water actually delivered in the field is known as__________________?
A. water use efficiency
B. water application efficiency
C. water conveyance efficiency
D. none of the above
Which of the following methods of applying water may be used on rolling land ?
A. boarder flooding
B. furrow flooding
C. check flooding
D. free flooding
Optimum depth of kor watering for rice is______________?
A. 165 mm
B. 135 mm
C. 190 mm
D. 215 mm
The kor depth for rice is 190 mm and kor period is 14 days. The outlet factor for this will be_________________?
A. 637 hectares/m3/sec
B. 972 hectares/m3/sec
C. 837 hectares/m3/sec
D. 1172 hectares/m3/sec
Rate of evaporation from a water surface increases if_________________?
1) difference of vapour pressure between water and air is increased
2) velocity of wind is decreased
3) concentration of soluble solids in water is decreased
The correct answer is?
A. (2) and (3)
B. (2) and (3)
C. (1) and (i2)
D. (1), (2) and (3)
The forces, which are considered for the analysis of an elementary profile of a gravity dam under empty reservoir condition, are________________?
1) Water pressure
2) Self weight
3) Uplift
4) Pressure due to earthquake
The correct answer is
A. Only (2)
B. (1), (2) and (4)
C. (1), (2) and (3)
D. (1), (2), (3) and (4)
Presence of tail water in a gravity dam_____________?
1) increases the principal stress
2) decreases the principal stress
3) increases the shear stress
4) decreases the shear stress
The correct answer is
A. (1) and (4)
B. (1) and (3)
C. (2) and (3)
D. (2) and (4)
Variability of rainfall is____________?
1) largest in regions of high rainfall
2) largest in coastal areas
3) largest in regions of scanty rainfall
The correct answer is?
A. (1) and (2)
B. only (1)
C. only (3)
D. (2) and (3)
Interception losses are due to_______________?
1) evaporation
2) transpiration
3) stream flow
The correct answer is?
A. only (1)
B. (1) and (3)
C. (1) and (2)
D. (1), (2) and (3)
To determine the discharge at a section in a stream from its rating curve, the required data are_______________?
1) slope of water surface at the section
2) stage at the section
3) current meter readings at the section
The correct answer is?
A. (2) and (3)
B. (1) and (2)
C. only (2)
D. only (3)
Strength of Materials MCQs – Civil Engineering
Instantaneous unit hydrograph is a hydrograph of________________?
1) unit duration
2) unit rainfall excess
3) infinitely small duration
4) infinitely small rainfall excess
The correct answer is?
A. (1) and (4)
B. (1) and (2)
C. (2) and (3)
D. (3) and (4)
Select the incorrect statement ?
A. Extensive irrigation should be adopted in areas susceptible to water logging
B. Intensive irrigation should be avoided in areas susceptible to water logging
C. Lift irrigation increases water logging
D. all of the above
Select the correct statement?
A. A meander increases the river length but a cut off reduces the river length
B. A cutoff increases the river length but a meander reduces the river length
C. Both meander and cutoff increase the river length
D. Both meander and cutoff decrease the river length
Study the following statements?
1. Levees are constructed parallel to river flow
2. Spurs are constructed parallel to river flow
3. Levees are constructed transverse to river flow
4. Spurs are constructed transverse to river flow
The correct answer is
A. (2) and (3)
B. (1) and (4)
C. (1) and (2)
D. (3) and (4)