A shaft transmits 100 kW at 600 rpm. The torque transmitted is approximately
A. 9549 N·m
B. 159 N·m
C. 955 N·m
D. 1592 N·m
View answer and explanation
Correct Option: D
T = 60 P / (2πN) = 60 × 100 000 / (2π × 600) ≈ 1591.5 N·m.
Q84Civil Engineering (SSC JE)
Easy
The Euler buckling load of a column fixed at both ends, compared to the same column hinged at both ends, is
A. 8 times
B. 2 times
C. 4 times
D. the same
View answer and explanation
Correct Option: C
Effective length is L/2 for fixed-fixed, so Pcr = π²EI / (L/2)² = 4π²EI/L².
Q85Civil Engineering (SSC JE)
Easy
A bar 2 m long elongates by 1 mm under an axial pull. The longitudinal strain is
A. 1 × 10⁻³
B. 5 × 10⁻⁴
C. 2 × 10⁻³
D. 5 × 10⁻³
View answer and explanation
Correct Option: B
Strain = ΔL / L = 1 mm / 2000 mm = 5 × 10⁻⁴.
Q86Civil Engineering (SSC JE)
Medium
The fixed end moment at each support of a fixed beam of span L carrying a central point load W is
A. WL/16
B. WL/8
C. WL/4
D. WL/12
View answer and explanation
Correct Option: B
For a fixed-fixed beam with a central load the end moments are WL/8, equal to the midspan moment.
Q87Civil Engineering (SSC JE)
Easy
In the moment distribution method, the carry-over factor for a prismatic member with the far end fixed is
A. 1
B. 3/4
C. 1/4
D. 1/2
View answer and explanation
Correct Option: D
A moment applied at one end induces half that moment at a fixed far end.
Q88Civil Engineering (SSC JE)
Medium
The stiffness of a prismatic beam of length L and flexural rigidity EI, with the far end hinged, is
A. 3EI / L
B. EI / L
C. 2EI / L
D. 4EI / L
View answer and explanation
Correct Option: A
The stiffness is 4EI/L with the far end fixed and 3EI/L with it hinged (simply supported).
Q89Civil Engineering (SSC JE)
Hard
The Müller-Breslau principle is used to draw
A. shear flow diagrams
B. moment distribution tables
C. influence lines
D. Mohr’s circles
View answer and explanation
Correct Option: C
The influence line for a force or moment is the deflected shape of the structure when a unit displacement or rotation is given at that point, in the direction of the force.
Q90Civil Engineering (SSC JE)
Easy
A perfect plane truss with 7 joints has how many members?
A. 7
B. 9
C. 11
D. 14
View answer and explanation
Correct Option: C
For a perfect plane frame m = 2j − 3 = 14 − 3 = 11.
Q91Civil Engineering (SSC JE)
Medium
The radius of gyration of a rectangular section of depth d about its centroidal axis parallel to the width is
A. d/2
B. d/√12
C. d/4
D. d/√3
View answer and explanation
Correct Option: B
k = √(I/A) = √[(bd³/12)/(bd)] = d/√12.
Q92Civil Engineering (SSC JE)
Easy
For no tension to develop in a rectangular section of depth d under an eccentric axial load, the eccentricity must not exceed
A. d/2
B. d/3
C. d/4
D. d/6
View answer and explanation
Correct Option: D
This is the middle-third rule. The line of thrust must stay within the middle third of the depth so that the stress stays compressive.
Q93Civil Engineering (SSC JE)
Easy
The magnetic bearing of a line is 78° and the magnetic declination is 3° east. The true bearing is
A. 78°
B. 81°
C. 75°
D. 84°
View answer and explanation
Correct Option: B
True bearing = magnetic bearing + declination (east is positive) = 78° + 3° = 81°.
Q94Civil Engineering (SSC JE)
Medium
According to the Bowditch rule, the correction applied to the latitude or departure of a traverse side is proportional to
A. the length of that side
B. the departure of that side only
C. the square of the length of that side
D. the bearing of that side
View answer and explanation
Correct Option: A
The rule distributes the closing error in proportion to the length of each line, which suits cases where angles and distances are equally precise.
Q95Civil Engineering (SSC JE)
Hard
The combined correction for the curvature of the earth and refraction over a sight of 2 km is about (use 0.0673 D², with D in km)
A. 0.538 m
B. 0.314 m
C. 0.269 m
D. 0.135 m
View answer and explanation
Correct Option: C
Combined correction = 0.0673 D² = 0.0673 × 4 = 0.269 m. The curvature correction alone is 0.0785 D².
Q96Civil Engineering (SSC JE)
Hard
A simple circular curve has radius 300 m and deflection angle 60°. The tangent length is
A. 173.2 m
B. 346.4 m
C. 300 m
D. 150 m
View answer and explanation
Correct Option: A
T = R tan(Δ/2) = 300 × tan 30° = 300 × 0.5774 = 173.2 m.
Q97Civil Engineering (SSC JE)
Easy
Contours are drawn at a 5 m interval. Two successive contours are 100 m apart horizontally. The gradient of the ground is
A vertical rectangular gate 2 m wide and 3 m deep has its top edge level with the free water surface. The total hydrostatic force on it is (γ = 9.81 kN/m³)
A. 58.86 kN
B. 176.58 kN
C. 88.29 kN
D. 29.43 kN
View answer and explanation
Correct Option: C
F = γ A h̄ = 9.81 × (2 × 3) × 1.5 = 88.29 kN.
Q116Civil Engineering (SSC JE)
Easy
The centre of pressure on a vertical rectangular plate with its top edge at the free surface lies below the surface at
A floating body is in stable equilibrium if its metacentre lies
A. below the centre of gravity
B. at the centre of buoyancy
C. below the centre of buoyancy
D. above the centre of gravity
View answer and explanation
Correct Option: D
A positive metacentric height (GM > 0) gives a restoring couple when the body is tilted.
Q118Civil Engineering (SSC JE)
Hard
Water flows at 2 m/s through a 100 mm diameter pipe 100 m long with a friction factor f = 0.02. The head loss by the Darcy-Weisbach equation is about
A. 2.04 m
B. 4.08 m
C. 8.0 m
D. 0.41 m
View answer and explanation
Correct Option: B
hf = f L V² / (2 g d) = 0.02 × 100 × 4 / (2 × 9.81 × 0.1) = 8 / 1.962 ≈ 4.08 m.
Q119Civil Engineering (SSC JE)
Medium
The hydraulic grade line represents the sum of
A. the pressure head and the datum head
B. the total energy of the flow
C. the velocity head and the datum head
D. the pressure head and the velocity head only
View answer and explanation
Correct Option: A
The HGL is the piezometric level. The energy grade line is higher than it by the velocity head V²/2g.
Q120Civil Engineering (SSC JE)
Easy
A centrifugal pump must be primed before starting in order to
A. increase the speed of the motor
B. reduce the discharge
C. cool the bearings
D. remove air from the casing and the suction pipe
View answer and explanation
Correct Option: D
A pump full of air cannot create enough suction to lift water, since air is far lighter than water.
Q121Civil Engineering (SSC JE)
Easy
A Pelton wheel is an impulse turbine most suitable for
A. very low head and very high discharge
B. medium head and any discharge only
C. low head and high discharge
D. high head and low discharge
View answer and explanation
Correct Option: D
Water jets strike the buckets at atmospheric pressure, which suits mountain sites with a high head.
Q122Civil Engineering (SSC JE)
Easy
For a Newtonian fluid, the shear stress is proportional to
A. the velocity gradient (rate of shear strain)
B. the velocity
C. the pressure
D. the density
View answer and explanation
Correct Option: A
Newton’s law of viscosity is τ = μ du/dy, where μ is the dynamic viscosity.
Q123Civil Engineering (SSC JE)
Hard
A crop has a duty of 1000 hectares per cumec over a base period of 100 days. The delta is
A. 8.64 m
B. 1.157 m
C. 0.0864 m
D. 0.864 m
View answer and explanation
Correct Option: D
Δ = 8.64 B/D = 8.64 × 100 / 1000 = 0.864 m.
Q124Civil Engineering (SSC JE)
Medium
Water application efficiency is the ratio of
A. the water used by the crop to the water stored in the reservoir
B. the water stored in the root zone to the water delivered to the field
C. the rainfall to the evaporation
D. the water delivered to the field to the water diverted at the headworks
View answer and explanation
Correct Option: B
It shows how well water given to a field is retained for use by the crop, as opposed to deep percolation and runoff.
Q125Civil Engineering (SSC JE)
Easy
The main purpose of lining an irrigation canal is to
A. increase the silt in water
B. reduce seepage losses
C. raise the water table around it
D. reduce the water velocity to zero
View answer and explanation
Correct Option: B
Lining reduces seepage, waterlogging and weed growth, and permits higher velocities and smaller sections.
Q126Civil Engineering (SSC JE)
Easy
A structure that carries canal water over a natural drainage is called
A. an aqueduct
B. a level crossing
C. a super passage
D. an inlet
View answer and explanation
Correct Option: A
In an aqueduct the canal is over the drainage. In a super passage the drainage flows over the canal.
Q127Civil Engineering (SSC JE)
Medium
A unit hydrograph represents the direct runoff hydrograph resulting from
A. a unit area of the catchment
B. any amount of rainfall of unit duration
C. unit discharge of the river
D. a unit depth (1 cm) of effective rainfall over the catchment in a given duration
View answer and explanation
Correct Option: D
Direct runoff from a storm of the same duration is found by scaling and adding the ordinates of the unit hydrograph.
Q128Civil Engineering (SSC JE)
Hard
In the rational formula Q = CiA/360, with Q in m³/s and i in mm/h, the catchment area A is in
A. square metres
B. square kilometres
C. hectares
D. acres
View answer and explanation
Correct Option: C
Check: 1 mm/h over 1 ha = 10 m³/h = 1/360 m³/s. So A in hectares gives the factor 360.
Q129Civil Engineering (SSC JE)
Easy
The storage in a reservoir below the minimum pool level, which cannot be drawn on for supply, is called
A. valley storage
B. live storage
C. surcharge storage
D. dead storage
View answer and explanation
Correct Option: D
Dead storage collects the silt and allows for the sill level of the lowest outlet.
Q130Civil Engineering (SSC JE)
Medium
The consumptive use of water by a crop is the sum of
A. evaporation and transpiration
B. infiltration and percolation
C. seepage and conveyance losses
D. rainfall and runoff
View answer and explanation
Correct Option: A
Consumptive use (evapotranspiration) covers water lost through the soil surface and through the plant leaves, plus the small amount stored in plant tissue.
Q131Civil Engineering (SSC JE)
Easy
A town of 50 000 people has a water demand of 135 litres per capita per day. The average daily demand is
A. 0.675 million litres
B. 5.0 million litres
C. 67.5 million litres
D. 6.75 million litres
View answer and explanation
Correct Option: D
50 000 × 135 = 6 750 000 litres per day.
Q132Civil Engineering (SSC JE)
Hard
A sedimentation tank receives 1800 m³/day and has a plan area of 60 m². The surface overflow rate is
A. 0.033 m³/m²/day
B. 3 m³/m²/day
C. 30 m³/m²/day
D. 108 m³/m²/day
View answer and explanation
Correct Option: C
Overflow rate = Q/A = 1800 / 60 = 30 m³/m²/day.
Q133Civil Engineering (SSC JE)
Medium
Beyond the breakpoint of chlorination, additional chlorine added to water appears as
A. combined residual chlorine
B. chloramines
C. chlorides
D. free residual chlorine
View answer and explanation
Correct Option: D
Up to the breakpoint chlorine is consumed by reactions with ammonia and organic matter. After it, the added chlorine stays as free chlorine.
Q134Civil Engineering (SSC JE)
Medium
In water treatment, alum reacts with the alkalinity of water to form
The main purpose of a trap in a house drainage system is to
A. increase the flow velocity
B. trap rainwater for reuse
C. filter the sewage
D. prevent foul gases from entering the building
View answer and explanation
Correct Option: D
A water seal in the trap stops sewer gas from coming back through the fixture.
Q136Civil Engineering (SSC JE)
Medium
The CPCB ambient noise standard for a residential area during the day is
A. 45 dB(A)
B. 75 dB(A)
C. 90 dB(A)
D. 55 dB(A)
View answer and explanation
Correct Option: D
The standard limit is 55 dB(A) in the day and 45 dB(A) at night for residential zones.
Q137Civil Engineering (SSC JE)
Easy
Composting of solid waste is
A. burning of waste at high temperature
B. burial of waste in a landfill without air
C. aerobic biological decomposition of organic matter into humus
D. separation of metals using magnets
View answer and explanation
Correct Option: C
Microorganisms decompose the organic fraction in the presence of oxygen, producing a stable compost.
Q138Civil Engineering (SSC JE)
Easy
An electrostatic precipitator is used for removing
A. particulate matter from flue gases
B. ozone from the atmosphere
C. carbon monoxide from exhaust
D. sulphur dioxide from air
View answer and explanation
Correct Option: A
It charges dust particles and collects them on oppositely charged plates. It is not effective on gases.
Q139Civil Engineering (SSC JE)
Hard
The stopping sight distance for a design speed of 60 km/h, with a reaction time of 2.5 s and a coefficient of friction of 0.35, is about
A. 40.5 m
B. 41.7 m
C. 82 m
D. 120 m
View answer and explanation
Correct Option: C
v = 16.67 m/s. Lag = 16.67 × 2.5 = 41.7 m. Braking = v²/2gf = 277.8 / (2 × 9.81 × 0.35) = 40.5 m. SSD = 82.2 m.
Q140Civil Engineering (SSC JE)
Hard
The length of a circular curve of radius 300 m and deflection angle 60° is
A. 628.3 m
B. 157.1 m
C. 314.2 m
D. 173.2 m
View answer and explanation
Correct Option: C
L = R Δ (in radians) = 300 × π/3 = 314.2 m.
Q141Civil Engineering (SSC JE)
Easy
A road has a rising gradient of +2 percent followed by a falling gradient of −2 percent. The algebraic difference of the grades is
A. 0 percent
B. 4 percent
C. 2 percent
D. 8 percent
View answer and explanation
Correct Option: B
The deviation angle is N = g1 − g2 = 2 − (−2) = 4 percent, which a summit curve must accommodate.
Q142Civil Engineering (SSC JE)
Hard
The capacity of a lane is C = 1000 V/S. If V = 50 km/h and the average spacing S = 25 m, the capacity in vehicles per hour is
A. 500
B. 4000
C. 2000
D. 1250
View answer and explanation
Correct Option: C
C = 1000 × 50 / 25 = 2000 vehicles per hour.
Q143Civil Engineering (SSC JE)
Medium
The wheels of Indian railway rolling stock have a coning of
A. 1 in 20
B. 1 in 10
C. 1 in 100
D. 1 in 40
View answer and explanation
Correct Option: A
The tread is tapered at 1 in 20, which centres the wheelset on the track and lets the outer wheel travel farther on curves.
Q144Civil Engineering (SSC JE)
Easy
The Marshall stability test is used for
A. design of bituminous mixes
B. finding the compaction of soil
C. finding the CBR of subgrade
D. checking the quality of cement
View answer and explanation
Correct Option: A
The test finds the optimum bitumen content from the stability, flow, density and voids of compacted specimens.
Q145Civil Engineering (SSC JE)
Medium
The Los Angeles abrasion test on aggregate measures its
A. shape
B. hardness (resistance to abrasion)
C. soundness against weathering
D. toughness against impact
View answer and explanation
Correct Option: B
Aggregates are tumbled with steel balls in a drum and the percentage passing a 1.7 mm sieve is the abrasion value. The impact test measures toughness.
Q146Civil Engineering (SSC JE)
Easy
Crashing of a project network means
A. cancelling the critical activities
B. increasing the float of every activity
C. reducing the project duration by adding resources at extra cost
D. delaying all non-critical activities
View answer and explanation
Correct Option: C
The cheapest activities on the critical path are shortened step by step until the target duration is met or no further reduction is possible.
Q147Civil Engineering (SSC JE)
Easy
Earnest money is a deposit taken from a tenderer
A. to show the seriousness of the bid, forfeited if the tenderer backs out
B. to pay for the drawings
C. as the final payment for the work
D. as the contractor’s profit
View answer and explanation
Correct Option: A
It is returned to unsuccessful bidders and is converted into part of the security deposit for the successful bidder.
Q148Civil Engineering (SSC JE)
Easy
An event in a PERT network is
A. a point in time at the start or end of an activity that uses no time or resources
B. the float available on an activity
C. the longest path through the network
D. a task that takes time and resources
View answer and explanation
Correct Option: A
Events are shown as nodes. Activities are the arrows that consume time.
Q149Civil Engineering (SSC JE)
Hard
For an activity, EST = 5, EFT = 9 and LFT = 14 (days). The total float is
A. 4 days
B. 9 days
C. 5 days
D. 0 days
View answer and explanation
Correct Option: C
Total float = LFT − EFT = 14 − 9 = 5 days.
Q150Civil Engineering (SSC JE)
Easy
For hauling and spreading earth over medium distances, the most suitable machine is a
A. backhoe
B. dragline
C. scraper
D. clamshell
View answer and explanation
Correct Option: C
A scraper excavates, hauls and spreads in one cycle. Draglines and clamshells dig and place within their reach.
Questions about this paper
What is the RRB JE (Junior Engineer) 2026 question paper on this page?
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