WBPSC AE Civil 2003 question paper with answers

Q1.For Effective control of silt entry into the canal, the sill of the head regulator should be

1. Above the sill of the under sluices
2. Above the sill of the under sluices
3. At the same leavel as the sill of under sluices
4. At the maximum flood level

Q2.Stopping distance of a vehicle in Highway

1. Lag Distance SL
2. Breaking Distance SB
3. SI + SB
4. SL - SB

Q3.Fixed end moment in vertical member of portal in sway is

1. EIΔ/L²
2. 2EIΔ/(1/4)L²
3. 4EIΔ/L²
4. 6EIΔ/L²

Q4.In a propped cantilever subjected to u.d.l. throughout the span the point of contraflexure will occur at

1. 1/2
2. 1/4 from propped end
3. 1/4 from fixed end
4. proper end

Q5.Self purification of natural streams, is caused due to

1. Dilution
2. Turbulence of water
3. Oxidation-reduction
4. All the above

Q6.Influence line of structure follows principle of

1. Muller Breslau
2. Rankine Gordon
3. Double Integration
4. Mohr's Circle

Q7.Imhoff tank is basically used for

1. Removing odour
2. Survival of fish
3. Sewage
4. Storing overhead

Q8.Working out the exact quantities of various items of work is known as

1. A Estimating
2. Mensuration
3. Quantity surveying
4. Valuation

Q9.In a broad-creasted rectangular weir the discharge varies as

1. H^(1/2)
2. H^(3/2)
3. H^(5/2)
4. H^(7/2)

Q10.Hardness in water is mainly due to

1. Fluoride
2. Nitrate
3. Carbonate
4. Phosphate

Q11.Treatment of water in contract beds, tickling filters, oxidation ponds are

1. Aerobic decomposition
2. Breakpoint chlorination
3. Anaerobic process
4. Non-ptheogen digestion

Q12.The loss of pressure head for the laminar flow through pipes veries

1. As the square of velocity
2. Directly as the velocity
3. As the inverse of the velocity
4. None of the above

Q13.Which one is the fastest method of constructing tubewell?

1. Hammering and cutting
2. Percussion drilling
3. Cable tool type
4. Hydraulic Rotary Method

Q14.Guide banks are provided

1. To Train the flow of a river along a specified course
2. To confine the width of the river
3. To reduce the flood peak
4. None of the above

Q15.When the drain water flows freely under a cross running canal the system is called

1. Superpassage
2. Aqueduct
3. Syphon
4. Elevelcrossing

Q16.For a clay slope of height 10m, stabilityn number is 0.05, γ=2 M² C=2.5, the critical height of the slope of the soils is

1. 4 m
2. 12.5 m
3. 25 m
4. 15 m

Q17.In plastic analysis, the shape factor for rectangular section is

1. 1.4
2. 1.5
3. 1.6
4. 1.7

Q18.Burning of solid waste in controlled manner is called

1. Landfill
2. Composting
3. Incineration
4. Stabilization

Q19.The water carried sewerage system remoes

1. Domestic sewage
2. Industrial sewage
3. Storm sewage
4. All the above

Q20.Lime is added to water or waste water samples to

1. Destabilise colloidal oil and organic emulsion suspension
2. Assist precipitation of metals as hydroxides by lowering their pH
3. Remove calcium hardness
4. Convert calcium carbonate to calcium bicarbonate

Q21.Raising of centre of Road with respect to edge is known as

1. Banking
2. Camber
3. Cant
4. Superelevation

Q22.Slope correction in chain/tape measurement is

1. H²/L
2. H/2L
3. H²/2L
4. H/L

Q23.Artesian system is ________ source of water.

1. Confined
2. Perched
3. Unconfined
4. Gravity-type

Q24.The stability of the upstream slope of an earth dam becomes critical for the condition of

1. Steady state seepage when the reservior is full
2. Reservoir empty
3. Sudden draw down
4. None of the above

Q25.Ordinate of hydrograph indicate-

1. Rainfall
2. Run-off
3. Discharge
4. Precipitation

Q26.Due to construction of weir, the upstream rise of water level, is termed as

1. Afflux
2. Groyne
3. Crest
4. Spur

Q27.A T-beam roof section has the following particulars: depth of slab 10 cm. width of rib 30 cm. depth of rib 50 cm. centre to centre distance of beams 3 m. effective span of beams of 5m. The effective flange width of the beam is

1. 200 cm
2. 300 cm
3. 150 cm
4. 100 cm

Q28.In simply supported determinate truss, member vs. joint relation is

1. M = 2J+3
2. M = 2J-3
3. M = 3J-2
4. M = 3J+2

Q29.Reduction factor of R.C.C. column with l/6 = 24 is

1. 1.25
2. 0.50
3. 1.00
4. 0.75

Q30.Community Wste mostly liquid not containing excreata is specially termed as

1. Garbage
2. Sewage
3. Sewerage
4. Sullage

Q31.Sewage is

1. Waste water from bath rooms
2. Drainage from roads
3. Waste water from kitchen
4. Any waste water of domestic or industrial origin

Q32.If Q is the discharge, the wetted perimetat of a regime channel according to Lacey's theory is given by

1. P = 47.5√Q
2. P = 475√Q
3. P = 0.475√Q
4. P = 4.75√Q

Q33.Calfornia Bearing Ratio mothod for design of flexible pavement takes care of mainly

1. Traffic intensity
2. Soil characteristic
3. Property of road material
4. Cement grounding

Q34.Providing cur-off walls beneath a hydraulic structure

1. Reduces the exit gradient
2. Increases the flow
3. Decreases the flow path
4. Increases the exit gradient

Q35.Chemically, marble is ________ rock.

1. Calcareous
2. Metamorphic
3. Argillacious
4. Silicious

Q36.Setting velocity of discrete particles in water follows

1. Stokes's Law
2. Mohr's Law
3. Darcys' Law
4. Newton's Law

Q37.The quantity of liquid wste which flows is sewers during the period of rainfall is known

1. Sanitary sewage
2. Industrial waste
3. Stom sewage
4. None of these

Q38.Spurs are provided

1. To train the flow of a river along a specified course
2. To confine the width of the river
3. Argilacious
4. None of the above

Q39.The canal has to irrigate 12000 hectares of rice with a duty of 1000 hecteres/cunsec. For what discharge should the cannal be designed, it the capacity factor is 0.8 and the time factor is 0.75.

1. 9.6 m³/s
2. 9 m³/s
3. 20 m³/s
4. 12.8 m³/s

Q40.Recurrence interval a and ranking of storm b is related with number of years of record y as

1. Y = ax+b
2. Y = a/b
3. Y = ax-b
4. Y = ab

Q41.The load carrying capacity of a pile, driven with fall of 1 m by 1800 kg. drop hammer, penetrating 3 mm in the last blow is

1. 100 t
2. 50 t
3. 20 t
4. 10 t

Q42.Purlin on a truss is designed for a bending moment of

1. WL/8
2. WL/12
3. WL/6
4. WL/10

Q43.The term counterfort is used in design os

1. Intze Tank
2. Friction pile
3. Reataining wall
4. Grillage Footing

Q44.The maximum deflection due to a uniformly distributed load w unit length over entire span of contilever of length a of flexural rigidity EI. is

1. WL²/3EI
2. Wl⁴/3EI
3. Wl⁴/8EI
4. Wl⁴/12EI

Q45.Thermal power plants mostly produce

1. CO
2. SO2
3. NO2
4. PAN

Q46.Standrad B.O.D. is taken for

1. 1 day
2. 2 days
3. 3 days
4. 5 days

Q47.The caagulant widely used for sewage treatment, is

1. Alum
2. Ferric chloride
3. Ferric sulphate
4. Chlorinated coppers

Q48.Water from the following sources is likely to be hard

1. River
2. Lake
3. Deep wall
4. Shallow well

Q49.In a repelling groyne, the axis of the groync with respect to the river flow direction, makes

1. An acute angle
2. An obtuse angle
3. A Right angle
4. an angle of 180°

Q50.The balance depth of cutting of a canal is one is one in which

1. The volume of cutting is equal to the volume of embankment
2. The volume of cutting is less than the volume of embankment
3. There is no cutting but only embankment
4. There is only cutting and no embankment

Q51.If W is the load on a circular slab or radius R, the maximum radial moment at the centre of the slab is

1. WR²/16
2. 2WR²/16
3. 3WR²/16
4. 5WR²/16

Q52.If a member is likely ot be subjected to torsion, which of the following sections is preferable.

1. Angle
2. Channel
3. Box
4. I-section

Q53.Alum acts as

1. Coagulant
2. Flocculant
3. Caralyst
4. Disinfectant

Q54.In Burmister's theory, displacement factor depends on

1. Ratio of modulit of elasticity of pavement ad augrade layers
2. Ratio of vertical deflection of pavement and subgrade layers
3. Posson's ratio of the pavement material
4. Thickness of wearing course

Q55.Battens in compound steel columns are mainly provided

1. To ensure unified behaviour
2. To increase the column capacity
3. To decrease the buckling in members
4. To prevent buckling

Q56.Capacity of a waste water tank, for a flow of 80 litre/day/head from 250 users, is 30 cu.m. The detention period is

1. 18 hrs
2. 24 hrs
3. 30 hrs
4. 36 hrs

Q57.The maximum failures of earthen dams have occured due to

1. The erosion caused by burrowing animals
2. The piping under excessive hydraulic gradient
3. Overtopping causes by infufficient spilway capacity
4. Sloughing of d/s sloping

Q58.The water balance equation for a catchment area in temrs of rainfall (P), runoff (R), evaporation (E) and storage (S) is written as

1. R = P - E ± ΔS
2. R = P + E ± ΔS
3. R = R = E - P ± Δ
4. P = E - R ± ΔS

Q59.A 45° slope of 15m high in a soil with an undrained strength of 115 KN/m² and γ = 20.2 KN/m³ stability number = 0.181, then the factor of safety of the slope is

1. 2.10
2. 1.50
3. 1.83
4. 2.81

Q60.In the limit state method, the maximum strain in concreats in bending compression is taken to be

1. 0.35
2. 0.035
3. 0.350
4. 0.00035

Q61.Crop ratio is defined as the ratio of area irrigated

1. In Rabi season to Kharif season
2. In Kharif season to Rabi Season
3. Under perennial crop to non-perenial crops
4. Under perennial crop to total area

Q62.The loading on the conjugate beam will be

1. Loading on the real beam divided by EI
2. B.M. diagram divided by S.F. diagram
3. B.M. diagram divided by EI
4. [option not legible/missing in source]

Q63.Fine particulars may be arrested by

1. Electrostatic precipatator
2. Ecosystem analyzer
3. Environmental legislator
4. Evapotranspirator

Q64.Activated sludge process is a biological process

1. Aerobic + anaerobic bacteria
2. Aerobic bacteria + Protozoa + algae
3. Anaerobic bacteria + fungi
4. Facultative bacteria + algae

Q65.An advantage of COD test over BOD test is

1. It oxidizes all metter including toxins
2. It cannot oxidize benzene, pyridine etc.
3. It is relatively a quick process
4. Biodegradable matter cannot be distinguished from the rest

Q66.Consumptive use of water in crop consists of

1. Contamination and sedimentation
2. Salination and transportation
3. Percolation and precipitation
4. Transpiration and evaporation

Q67.Depth of hydraulic jump depends on the pieterm called

1. Reynold Number
2. Weber Number
3. Froude Number
4. Mach Number

Q68.Capillary rise is greater for

1. Well graded soils
2. Gap-graded soils
3. Fine grained soils
4. Coarse grained soils

Q69.Departure of a line 70.7 m long with WCB=330° is

1. -61.29
2. +35.35
3. +61.29
4. -35.35

Q70.The bulking of sand is due to

1. The increase in space between the particles caused the surface tension effect or moisture
2. The swelling of air in voids
3. The viscous effect of moisture
4. None of the above

Q71.Waterlogging is the state of the soil where

1. The water table is brought very near of the ground surface
2. The water table is at deep depth
3. The moisture in the soil is beyond the reach of plant roots
4. None of the above

Q72.In a homogeneous embankment type earth dam, the phreatic line is kept well within the body of the dam by

1. Providing proper u/s slope protection
2. Providing proper d/s slops protection
3. Suitable increasing the top width
4. Providing horizontal drainage filter at the d/s face

Q73.The purpose of stiffeners in a plate girder is to

1. Prevent buckling of web plate
2. Increase the moment carrying capacity of the girder
3. Reduce the shear stress
4. Take care of bearing stress

Q74.If one of the supports of a continuous beam sinks by δ, the induced moments will be (as printed - symbols indistinct in scan)

1. 6EIδ
2. EIδ/L
3. 6EIδ/L²
4. 6EIδ/(L/2)

Q75.Hand pump operates through

1. Solar energy
2. Electric motor
3. Rotating vane
4. One way valve

Q76.Pumping and gravity type of drinking water distribution is done through

1. Elevated Tank
2. Septic Tank
3. Imhoff Tank
4. Sullage Tank

Q77.For water distribution from high hill, the most suitable system is

1. Grid iron
2. Radial network
3. Using penstock
4. Watershed canal

Q78.In cement, ratio of silica : Lime : alumina is approximately

1. 10:4:1
2. 4:10:1
3. 1:10:4
4. 1:4:10

Q79.Furrow irrigation is

1. Water passing through narrow ditch
2. Water supplied through perforated pipe
3. Water pumped from deep well
4. Water sprayed by rotating nozzle

Q80.Which of the following may lead to waterlogging of the fields

1. Poor drainage
2. Excessive seepage form nearby reservoirs
3. Over irrigation
4. All the above

Q81.Waterloging can be prevented by

1. Reducing the percolation from canals and water courses
2. Increasing the ground water withdrawals
3. Providing different subsurface drainage system
4. All the above

Q82.Which one is not a redundant structure?

1. Completely closed ring
2. Fixed Portal frame
3. Three-hinged arch
4. Propped cantilever

Q83.Drilling mud is usually a mixture of

1. Bentonite clay and water
2. China clay and water
3. Fine silt, fine sand and water
4. Fine silt and water

Q84.In a plate girder the flange splicing is done at

1. Minimum shear location
2. Minimum moment location
3. Maximum shear location
4. Maximum moment location

Q85.Correction for pull is

1. (P-P0)l/AE
2. (P-P0)A×l/E
3. (P-P0)EAL
4. (P-P0)A×l/IE

Q86.Delte of a crop in metre is related with 'Base' and Duty as

1. S.64D/B
2. B/8.64D
3. D/8.64B
4. 8.64B/D

Q87.The most important and widely used tubewell in India, is

1. Strainer well
2. Cavity well
3. Slotted well
4. Performed pipe well

Q88.Rainfall hyetograph shows the variation of

1. Cumulative rainfall
2. Rainfall intensity with time
3. Rainfall depth over an area
4. Rainfall intensity with the cumulative rainfall

Q89.The divide wall in a diversion headwork is provided

1. To increase the head of flow through the head regulation
2. To prevent the formation of vertices in front of head regulater
3. To control the silt entry into channel
4. To reduce the uplift pressures on the apron

Q90.When lime is added to a soil, it

1. Increases grain size due to electrolyte and chemical action
2. Lowers plastic limit and increases liquid limit
3. Renders soil brittle
4. Reduces binding action

Q91.Slump test facilitates

1. Controlling of water-cement ratio of concrete during construction
2. The determination of initial and final setting times of cement
3. The determination of workability of concrete
4. None of the above

Q92.Flow in pipes is laminar if Reynold number is

1. Less than 2100
2. More than 3000
3. Between 2100 and 3000
4. None of these

Q93.Rise of water in small vertical tube or pipe is called

1. Viscosity
2. Compressibility
3. Continuity
4. Capilarity

Q94.Dead storage in a reservoir is provided

1. To meet the emergency needs
2. To mitigate the floods
3. To accommodate the silt trapped in the reservoir
4. [continues on next page]

Q95.In distribution pipes, air valves are provided at

1. Junction point
2. Lower Point
3. Any point
4. Higher points

Q96.Which one is not centrifugal pump?

1. Volute
2. Diffuser
3. Reciprocating
4. Turbine

Q97.Volume of Void/Volume of Soil Mass is termed

1. Porosity
2. Void Ratio
3. Saturation
4. Specific Volume

Q98.A soil having, c=√(3/2), φ=30° is subjected to cell pressure of 1 unit. The deviator stress at failure will be

1. 3 unit
2. 4 unit
3. 5 unit
4. 6 unit

Q99.If the pH value of sewage is 7

1. It is acidic
2. It is alkaline
3. It is neutral
4. None of these