Official Paper

SSC JE CBT-II (Civil Engineering) Official Paper (Held On 07 Apr, 2026) (Previous Year Paper)

100 questions · 120 minutes · with answers · free

General Engineering (100 questions)

The unit hydrograph of a catchment is derived assuming uniform rainfall excess over the entire basin for a specific duration. If the rainfall duration is doubled while keeping rainfall intensity the same, which of the following is most likely?

((a))
Peak discharge doubles
((b))
Base width halves
((c))
Ordinates increase but peak reduces
((d))
A new unit hydrograph must be derived

Show Answer

Answer: ((a))

Peak discharge doubles

High-strength concrete occasionally exhibits more cracking than normal concrete. What is the primary reason?

((a))
Excess $C_{2}S$
((b))
Excess $C_{3}S$
((c))
Excess gypsum
((d))
Low fineness

Show Answer

Answer: ((a))

Excess $C_{2}S$

An increase of effective depth by 10% results in approximately what percentage increase in moment capacity of a singly reinforced rectangular beam?

((a))
5%
((b))
10%
((c))
20%
((d))
30%

Show Answer

Answer: ((a))

Why is steel regarded as a ductile material in structural design philosophy?

((a))
It fails suddenly without warning
((b))
It has low tensile strength
((c))
It undergoes large deformation before failure
((d))
It behaves as a brittle material

Show Answer

Answer: ((a))

It fails suddenly without warning

Why does IS 800 give equal importance to connection design and member design?

((a))
Connections carry no load
((b))
Failure usually occurs in members only
((c))
Connections are critical for safe load transfer
((d))
Connections are not required in steel structures

Show Answer

Answer: ((a))

Connections carry no load

An M20 bolt of grade 4.6 is subjected to single shear. Given a shear area of 245 mm², determine the design shear strength of the bolt as per IS 800:2007.

((a))
45.3 kN
((b))
56.6 kN
((c))
62 kN
((d))
78 kN

Show Answer

Answer: ((a))

45.3 kN

Why does IS 800 consider shear lag as a reduction in strength rather than a serviceability concern?

((a))
It affects only appearance
((b))
It causes excessive deflection
((c))
It leads to non-uniform stress distribution reducing effective area
((d))
It increases stiffness of members

Show Answer

Answer: ((a))

It affects only appearance

What is the term for a new detailed estimate prepared specifically for additional work that was not included in the original estimate?

((a))
Supplementary Estimate
((b))
Annual Repair Estimate
((c))
Maintenance Estimate
((d))
Revised Estimate

Show Answer

Answer: ((a))

Supplementary Estimate

In building estimation, for which of the following items is earthwork in excavation generally NOT required?

((a))
Utility walls
((b))
Foyer area walls
((c))
Stairs
((d))
Walls

Show Answer

Answer: ((a))

Utility walls

Plinth area method of estimating is mainly used for:

((a))
Detailed estimation
((b))
Preliminary estimation
((c))
Valuation of land only
((d))
Rate analysis

Show Answer

Answer: ((a))

Detailed estimation

The document showing item-wise quantities of work is called:

((a))
Tender form
((b))
Bill of Quantities
((c))
Measurement book
((d))
Cost index

Show Answer

Answer: ((a))

Tender form

The expected output of a mason for half brick partition wall construction is:

((a))
5sqm per day
((b))
15sqm per day
((c))
25sqm per day
((d))
45sqm per day

Show Answer

Answer: ((a))

5sqm per day

The approximate weight of one cubic meter of mild steel is:

((a))
1000 kg
((b))
2400 kg
((c))
14000 kg
((d))
7850 kg

Show Answer

Answer: ((a))

1000 kg

Calculate the quantity of plastering (both faces) for a wall that is 3meters long, 3meters high, and 30cm thick.

((a))
$18m^2$
((b))
$27m^2$
((c))
$9m^2$
((d))
$37m^2$

Show Answer

Answer: ((a))

$18m^2$

The volume of dry materials required for 10cum of wet concrete is:

((a))
15.4cum
((b))
12.0cum
((c))
16.5cum
((d))
14.5cum

Show Answer

Answer: ((a))

15.4cum

The reciprocal levelling eliminates which errors completely?

((a))
Curvature, refraction and collimation
((b))
Curvature only
((c))
Refraction and curvature only
((d))
Collimation and local attraction

Show Answer

Answer: ((a))

Curvature, refraction and collimation

When using total stations, a prism constant error primarily behaves as:

((a))
Scaling with the length of the measurement
((b))
Uniform addition or subtraction across distances
((c))
Changing mainly with ambient temperature
((d))
Stemming from atmospheric or terrain curvature

Show Answer

Answer: ((a))

Scaling with the length of the measurement

A rectangular plot was measured with a tape that was 0.5% too long. If the measured area is 4,000 $m^2$ , what is the TRUE area of the plot?

((a))
4,020.0 $m^2$
((b))
4,040.1 $m^2$
((c))
3,980.1 $m^2$
((d))
4,080.0 $m^2$

Show Answer

Answer: ((a))

4,020.0 $m^2$

A 30m steel tape (weight 0.8kg) is supported at its ends only. If a pull of 100N is applied, then what is the sag correction? (Take g = 9.81 $m/s^2$ )

((a))
0.0051m
((b))
0.0077m
((c))
0.0125m
((d))
0.0150m

Show Answer

Answer: ((a))

0.0051m

The bubble of a level tube is deflected by 3 divisions for a staff reading change of 0.018m at a distance of 100m. What is the radius of curvature of the bubble tube if one division is 2mm?

((a))
22.22m
((b))
33.33m
((c))
11.11m
((d))
44.44m

Show Answer

Answer: ((a))

22.22m

In an external focusing telescope, the focal length is 25cm, and the distance from the objective to the vertical axis is 15cm. If an anallatic lens is used, what is the additive constant?

((a))
0.40m
((b))
0.10m
((c))
0.00m
((d))
0.25m

Show Answer

Answer: ((a))

0.40m

An EDM instrument uses a modulation frequency of 20MHz. What is the maximum distance (unit length) it can measure WITHOUT ambiguity? (Assuming $c = 3.8 \times 10^8$ m/s)

((a))
15.0m
((b))
9.5m
((c))
30.0m
((d))
60.0m

Show Answer

Answer: ((a))

15.0m

If the standard deviation of an angle is $\pm 2''$ , what is the standard deviation of the sum of four such angles?

((a))
$\pm 2''$
((b))
$\pm 4''$
((c))
$\pm 8''$
((d))
$\pm 16''$

Show Answer

Answer: ((a))

$\pm 2''$

Which of the following is NOT considered a method of micro-irrigation?

((a))
Mist system
((b))
Trickle method
((c))
Surface flooding
((d))
Bubbler irrigation

Show Answer

Answer: ((a))

Mist system

Which crop is most suitable for drip irrigation?

((a))
Rice
((b))
Wheat
((c))
Sugarcane
((d))
Jute

Show Answer

Answer: ((a))

Rice

The primary purpose of guide banks in diversion head works is to:

((a))
Store water
((b))
Increase the discharge of the bank of the river
((c))
Train and confine the river flow
((d))
Measure flood level

Show Answer

Answer: ((a))

Store water

If water discharge in a canal is $20m^3/s$ and duty is $1,000ha/cumec$ , the area irrigated is:

((a))
10,000 ha
((b))
20,000 ha
((c))
30,000 ha
((d))
5,000 ha

Show Answer

Answer: ((a))

10,000 ha

The hydraulic jump in stilling basins is mainly used to:

((a))
Increase velocity
((b))
Store water
((c))
Dissipate excess energy
((d))
Divert flow

Show Answer

Answer: ((a))

Increase velocity

The time between the centre of mass of rainfall excess and the peak of hydrograph is known as _________.

((a))
Lag time
((b))
Time of concentration
((c))
Base period
((d))
Rising time

Show Answer

Answer: ((a))

Lag time

If time of concentration of a catchment is 2 hours, the duration of rainfall for rational method should be:

((a))
Less than 2 hours
((b))
Equal to 2 hours
((c))
More than 2 hours
((d))
Zero

Show Answer

Answer: ((a))

Less than 2 hours

The main function of lime in soil stabilization is to:

((a))
Increase plasticity
((b))
Reduce plasticity and improve workability
((c))
Increase water absorption
((d))
Decrease shear strength

Show Answer

Answer: ((a))

Increase plasticity

Which roller is most effective for compacting cohesive soils?

((a))
Smooth wheel roller
((b))
Pneumatic roller
((c))
Sheep foot roller
((d))
Vibratory roller

Show Answer

Answer: ((a))

Smooth wheel roller

For the same soil, permeability measured at 35°C will be higher than at 15°C mainly because:

((a))
Soil expands at higher temperature
((b))
Void ratio increases
((c))
Viscosity of water decreases
((d))
Adsorbed water disappears

Show Answer

Answer: ((a))

Soil expands at higher temperature

A 2m wide strip footing rests on clay with c = 40kPa. Neglecting surcharge, ultimate bearing capacity is closest to:

(Terzaghi $N_c = 5.7$ )

((a))
160kPa
((b))
200kPa
((c))
228kPa
((d))
300kPa

Show Answer

Answer: ((a))

160kPa

In Mohr-Coulomb failure theory, shear strength depends on:

((a))
Only cohesion
((b))
Only normal stress
((c))
Cohesion and normal effective stress
((d))
Only pore water pressure

Show Answer

Answer: ((a))

Only cohesion

If LL = 60%, PL = 30% and natural water content w = 45%, the consistency index is closest to:

((a))
0.25
((b))
0.50
((c))
0.75
((d))
1.00

Show Answer

Answer: ((a))

0.25

If natural water content is greater than liquid limit, the liquidity index will be:

((a))
Negative
((b))
Zero
((c))
Between 0 and 1
((d))
Greater than 1

Show Answer

Answer: ((a))

Negative

In a direct shear test, the major limitation is that:

((a))
Stress distribution is uniform
((b))
Failure plane is predetermined
((c))
Pore pressure is measured
((d))
Test is time-consuming

Show Answer

Answer: ((a))

Stress distribution is uniform

According to Burmister's two-layer theory, the vertical displacement at the surface of a flexible pavement is dependent on the "settlement factor" (F_W). If the ratio of $\frac{E_1}{E_2}$ (pavement/subgrade modulus) increases, F_W will:

((a))
Increase linearly
((b))
Decrease
((c))
Remain constant
((d))
Increase exponentially

Show Answer

Answer: ((a))

Increase linearly

In Benkelman Beam deflection studies, the "Leg Correction" is required if:

((a))
The pavement is rigid.
((b))
The deflection bowl is large enough to affect the beam's front supports.
((c))
The temperature is above 35°C.
((d))
The subgrade is sandy.

Show Answer

Answer: ((a))

The pavement is rigid.

In a turnout, "Negative Superelevation" is usually required when:

((a))
The main line is on a curve, and a branch line takes off in the opposite direction.
((b))
The train speed exceeds 160km/h.
((c))
The radius of the curve is less than 100m.
((d))
The track is laid on a bridge.

Show Answer

Answer: ((a))

The main line is on a curve, and a branch line takes off in the opposite direction.

A locomotive with 3 pairs of driving wheels carries 20 tonnes per axle. If the coefficient of friction is 0.2, what is the haulage capacity?

((a))
6tonnes
((b))
12tonnes
((c))
18tonnes
((d))
40tonnes

Show Answer

Answer: ((a))

6tonnes

A mono-symmetric I-beam is subjected to uniform bending. Why does its lateral-torsional buckling (LTB) resistance increase when the larger flange is placed in compression?

((a))
The Shear Center and Centroid coincide.
((b))
The Wagner Effect (J-parameter) increases the torsional stiffness.
((c))
The increased moment of inertia about the minor axis $I_y$ dominates the Euler formula.
((d))
The warping constant $C_w$ is minimised.

Show Answer

Answer: ((a))

The Shear Center and Centroid coincide.

In a propped cantilever steel beam designed for plastic redistribution, full plastic hinge formation is often not achieved when High-Strength Steel (HSS) is used. What is the primary material-related reason for this limitation?

((a))
HSS has a higher yield-to-tensile strength $f_y/f_u$ ratio, reducing the rotation capacity before fracture.
((b))
HSS is inherently more susceptible to shear lag in the web.
((c))
The Young's Modulus of HSS is significantly lower than mild steel.
((d))
HSS cannot be welded, preventing continuous moment connections.

Show Answer

Answer: ((a))

HSS has a higher yield-to-tensile strength $f_y/f_u$ ratio, reducing the rotation capacity before fracture.

When calculating the deflection of a deep steel plate girder, why is the standard Euler-Bernoulli beam theory insufficient?

((a))
It ignores warping's contribution to the bending moment.
((b))
It neglects the "Shear Deformation" $\frac{V}{GA_v}$ , which becomes significant at low span-to-depth ratios.
((c))
It assumes the steel is an anisotropic material.
((d))
It cannot account for the weight of the stiffeners.

Show Answer

Answer: ((a))

It ignores warping's contribution to the bending moment.

What does the "Staleness" or "Ageing" of steel (Strain Ageing) do to its mechanical properties?

((a))
Increases ductility and decreases yield strength.
((b))
Increases yield strength but significantly decreases notch toughness (increasing brittleness).
((c))
Makes the steel immune to corrosion.
((d))
Changes the steel's colour to blue.

Show Answer

Answer: ((a))

Increases ductility and decreases yield strength.

In a flow field, the streamlines and equipotential lines are:

((a))
Parallel to each other
((b))
Orthogonal everywhere except at stagnation points
((c))
Orthogonal only in laminar flow
((d))
Only orthogonal in 3D flow

Show Answer

Answer: ((a))

Parallel to each other

The condition for the most economical trapezoidal channel section is that the hydraulic radius R is equal to:

((a))
Half the depth $(\frac{y}{2})$
((b))
The depth (y)
((c))
Twice the depth (2y)
((d))
$\frac{y}{\sqrt{3}}$

Show Answer

Answer: ((a))

Half the depth $(\frac{y}{2})$

Which of the following turbines has the highest specific speed $(N_s)$ ?

((a))
Pelton Wheel (Single Jet)
((b))
Francis Turbine
((c))
Pelton Wheel (Multi Jet)
((d))
Propeller Turbine

Show Answer

Answer: ((a))

Pelton Wheel (Single Jet)

A vacuum gauge connected to a chamber reads 40 cm of Hg. If the local barometer reads 750 mm of Hg, the absolute pressure in the chamber is:

((a))
46.66 kPa
((b))
53.33 kPa
((c))
115 kPa
((d))
35 kPa

Show Answer

Answer: ((a))

46.66 kPa

Two pipes of length L and diameters D and 2D are connected in parallel. If the flow is laminar and the pressure drop is the same, the ratio of discharges $Q_{2D}/Q_D$ is:

((a))
2
((b))
4
((c))
8
((d))
16

Show Answer

Answer: ((a))

In turbulent flow through a rough pipe, the friction factor f is a function of:

((a))
Reynolds number only
((b))
Surface tension and Reynolds number
((c))
Relative roughness only
((d))
Both Reynolds number and relative roughness

Show Answer

Answer: ((a))

Reynolds number only

What is the power transmission efficiency of a pipeline if the head loss due to friction is $\frac{1}{4}$ of the total head supplied at the inlet?

((a))
25%
((b))
33.3%
((c))
75%
((d))
66.6%

Show Answer

Answer: ((a))

25%

Three pipes are in series. The total head loss is 20 m. If the friction factors and lengths are identical, but the diameters are D, 2D, and 3D, which pipe contributes most to the head loss?

((a))
Pipe with diameter D
((b))
Pipe with diameter 2D
((c))
Pipe with diameter 3D
((d))
All contribute equally

Show Answer

Answer: ((a))

Pipe with diameter D

Which road sign is the only regulatory category sign that is octagonal?

((a))
Give Way
((b))
Speed Limit
((c))
STOP Sign
((d))
No Parking

Show Answer

Answer: ((a))

Give Way

In accident studies, the "Severity Index" is calculated as:

((a))
(Total Accidents / Total Population)x1000
((b))
(Fatal Accidents / Total Accidents) x 100
((c))
(Total Injuries / Total Vehicles)
((d))
(Property Damage / Total Accidents)

Show Answer

Answer: ((a))

(Total Accidents / Total Population)x1000

What is the primary function of a "Divisional Island" on a high-speed highway?

((a))
To eliminate all merging conflicts.
((b))
To prevent head-on collisions by separating opposing traffic streams.
((c))
To provide a space for illegal U-turns.
((d))
To reduce the number of traffic signals required.

Show Answer

Answer: ((a))

To eliminate all merging conflicts.

As per IRC guidelines, the "PCU" value for an Auto-rickshaw in India, is typically:

((a))
0.5
((b))
1.0
((c))
1.5
((d))
2.0

Show Answer

Answer: ((a))

0.5

What is the minimum permissible compressive strength for a common burnt clay brick to be considered suitable for structural masonry under standard building codes?

((a))
3.5 $N/mm^{2}$
((b))
7 $N/mm^{2}$
((c))
10 $N/mm^{2}$
((d))
12.5 $N/mm^{2}$

Show Answer

Answer: ((a))

3.5 $N/mm^{2}$

Under the classification provided by IS 712 : 1984, which category of building lime is specifically identified as Fat Lime and recommended for the final finishing coat in plastering and whitewashing?

((a))
Class A
((b))
Class B
((c))
Class C
((d))
Class F

Show Answer

Answer: ((a))

Class A

As per IS 1077 : 1992, what is the minimum required compressive strength for a first-class burnt clay brick?

((a))
7.5 $N/mm^{2}$
((b))
9.5 $N/mm^{2}$
((c))
10.0 $N/mm^{2}$
((d))
5.5 $N/mm^{2}$

Show Answer

Answer: ((a))

7.5 $N/mm^{2}$

As per IS 1343 : 1980, what is the minimum 28 - day compressive strength required for concrete used in pre-tensioned members?

((a))
M30
((b))
M35
((c))
M40
((d))
M20

Show Answer

Answer: ((a))

M30

According to IS 8112, what is the minimum required compressive strength for 43 – grade Ordinary Portland Cement (OPC) after a curing period of 7days?

((a))
33N/mm²
((b))
23N/mm²
((c))
16N/mm²
((d))
22N/mm²

Show Answer

Answer: ((a))

33N/mm²

The density of lightweight concrete typically ranges between:

((a))
400 to 2000kg/m³
((b))
500 to 1000kg/m³
((c))
100 to 450kg/m³
((d))
200 to 1000kg/m³

Show Answer

Answer: ((a))

400 to 2000kg/m³

In masonry construction, for which of the following types of structures is a stretcher bond most specifically suitable?

((a))
Half brick wall
((b))
Compound wall
((c))
Slab
((d))
Plinth beam

Show Answer

Answer: ((a))

Half brick wall

According to IS 456 : 2000, what is the minimum cement content required for plain cement concrete (PCC) when

it is subjected to a moderate exposure condition?

((a))
210kg/m³
((b))
240kg/m³
((c))
190kg/m³
((d))
100kg/m³

Show Answer

Answer: ((a))

210kg/m³

For a rectangular beam with a fixed cross-sectional area, which dimensional adjustment provides the greatest

increase in its flexural (bending) strength?

((a))
Minimizing the depth to reduce weight.
((b))
Maximizing the width to increase the base support.
((c))
Using a perfectly square cross-section.
((d))
Increasing the depth while decreasing the width.

Show Answer

Answer: ((a))

Minimizing the depth to reduce weight.

In a structural beam, if the Bending Moment Diagram (BMD) exhibits a linear variation (a straight line with a non-zero slope) over a specific segment, what is the nature of the loading acting on that segment?

((a))
Point load
((b))
Combination of point load and uniformly distributed load
((c))
Uniformly varying load
((d))
Pure moment

Show Answer

Answer: ((a))

Point load

In a beam with a rectangular cross-section subjected to transverse shear, the shear stress varies parabolically across

the depth. What is the ratio of maximum shear stress to average shear stress for such a section?

((a))
$\tau_{max} = \tau_{avg}$
((b))
$\tau_{max} = \ 1.8tau_{avg}$
((c))
$\tau_{max} = 1.5\tau_{avg}$
((d))
$\tau_{max} = 2\tau_{avg}$

Show Answer

Answer: ((a))

$\tau_{max} = \tau_{avg}$

For checking deflection under the serviceability limit state as per IS 456 : 2000, the partial safety factor applied to the characteristic strength of concrete is:

((a))
1.0
((b))
0.8
((c))
2.3
((d))
2.5

Show Answer

Answer: ((a))

1.0

Portland Slag Cement conforming to IS 455 : 1989 exhibits superior sulphate-resistant properties when the slag content exceeds:

((a))
20%
((b))
25%
((c))
40%
((d))
50%

Show Answer

Answer: ((a))

20%

A rectangular beam carries a shear force of 30 kN and has a cross-sectional area of 6000 mm². What is the maximum shear stress in the section?

((a))
5 MPa
((b))
7.5 MPa
((c))
10 MPa
((d))
15 MPa

Show Answer

Answer: ((a))

5 MPa

According to standard construction practices and IS 456 : 2000, the minimum period that props (shoring) must remain in place for reinforced concrete slabs up to 4.5 m span, when Ordinary Portland Cement (OPC) is used, is:

((a))
3 Days
((b))
7 Days
((c))
14 Days
((d))
28 Days

Show Answer

Answer: ((a))

3 Days

According to IS design provisions for earthquake-resistant structures under the limit state of collapse, which of the following load combinations should be considered?

((a))
1.5DL + 1.2LL + 1.0EL
((b))
1.5DL + 1.2LL + 1.2EL
((c))
1.2DL + 1.2LL + 1.2EL
((d))
1.8DL + 1.2LL + 1.2EL

Show Answer

Answer: ((a))

1.5DL + 1.2LL + 1.0EL

Which type of valve is installed on the suction line of a tube-well, close to the pump, to prevent backflow and maintain the pump's prime?

((a))
Foot Value
((b))
Gate Value
((c))
Air value
((d))
Sluice valve

Show Answer

Answer: ((a))

Foot Value

Under standard design and operating conditions, the discharge capacity of a typical tube-well generally falls within which of the following ranges?

((a))
10 - 20 litres/sec
((b))
50 - 100 litres/sec
((c))
200 - 1000 litres/sec
((d))
1000 - 1500 litres/sec

Show Answer

Answer: ((a))

10 - 20 litres/sec

Manholes provided on large water-transmission pipelines that convey water from the source to the city are generally spaced at intervals of:

((a))
200 to 300 metres
((b))
50 to 100 metres
((c))
300 to 600 metres
((d))
700 to 800 metres

Show Answer

Answer: ((a))

200 to 300 metres

In the analysis of continuous beams, Clapeyron's Theorem of Three Moments is derived using which fundamental structural analysis approach?

((a))
Displacement Method
((b))
Force Method
((c))
Moment Distribution Method
((d))
Stiffness Matrix Method

Show Answer

Answer: ((a))

Displacement Method

A Jackson's Candle Turbidimeter is suitable for measuring turbidity in water within which of the following ranges?

((a))
25 - 1000 mg/l
((b))
0.5 - 1 mg/l
((c))
1000 - 1500 mg/l
((d))
1500 - 2500 mg/l

Show Answer

Answer: ((a))

25 - 1000 mg/l

What is the conventional per-capita water demand, in litres per day per person, adopted for Indian towns with populations below 20, 000?

((a))
110
((b))
80
((c))
55
((d))
90

Show Answer

Answer: ((a))

110

If the average annual rainfall received over India is assumed to be uniformly distributed across its entire geographical area, what is its approximate average depth?

((a))
50cm
((b))
115cm
((c))
119cm
((d))
180cm

Show Answer

Answer: ((a))

50cm

In a continuous beam analyzed using the moment distribution method, suppose the moment of inertia 'I' of every span connected to a joint is doubled. How will this change affect the distribution factors at that joint?

((a))
Double
((b))
Be halved
((c))
Remain unchanged
((d))
Increase by $\sqrt{2}$

Show Answer

Answer: ((a))

Double

What is the maximum permissible concentration of phenolic compounds allowed in public drinking water supplies?

((a))
0.002ppm
((b))
5ppm
((c))
12ppm
((d))
0.01ppm

Show Answer

Answer: ((a))

0.002ppm

What is the maximum permissible concentration of fluoride allowed in drinking water, expressed in mg/L or ppm?

((a))
1.5 mg/litre
((b))
10 mg/litre
((c))
20.5 mg/litre
((d))
5 mg/litre

Show Answer

Answer: ((a))

1.5 mg/litre

A continuous beam consists of n spans supported by (n + 1) hinged supports. What is the degree of static indeterminacy ( $D_s$ ) of this beam?

((a))
n - 1
((b))
n
((c))
n + 1
((d))
1

Show Answer

Answer: ((a))

n - 1

In the Slope-Deflection formulation, the term $\frac{3\Delta}{L}$ appears when a joint undergoes lateral translation. What does this term physically represent?

((a))
Flexural rigidity
((b))
Chord rotation (Sway)
((c))
Curvature
((d))
Internal hinge rotation

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Answer: ((a))

Flexural rigidity

Which mineral admixture has the finest particle size among the following?

((a))
Silica Fume
((b))
Ground Granulated Blast-furnace Slag (GGBS)
((c))
Fly ash
((d))
Bottom Ash

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Answer: ((a))

Silica Fume

What is one of the primary purposes of adding fly ash as a mineral admixture in concrete?

((a))
Increase durability
((b))
Decrease durability
((c))
Increase cracking
((d))
Increase bleeding

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Answer: ((a))

Increase durability

Using Abrams' strength-water/cement ratio relationship expressed as: $S = \frac{A}{B^x} \times (6.895 \times 10^{-3}) MPa$ , where 'S' is the compressive strength, 'x' is the water-cement ratio by volume, and A = 6000 and B = 10 are empirical constants.

<br>

Estimate the compressive strength of concrete when the adopted water-cement ratio (by volume) is 0.40.

((a))
15.53 MPa
((b))
16.46 MPa
((c))
75 MPa
((d))
19.99 MPa

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Answer: ((a))

15.53 MPa

A concrete mix has a total batch volume of 6m³. If the cement content in the batch is 36 bags and the total water added is 700 litres, determine the water-cement ratio of the mix.

((a))
0.38
((b))
0.20
((c))
0.50
((d))
0.55

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Answer: ((a))

0.38

A concrete batch has a total volume of 6m³. If the batch contains 36 bags of cement, and water added is 700 litres. Calculate the cement content of the mix in kg/m³.

((a))
300kg/m³
((b))
250kg/m³
((c))
150kg/m³
((d))
50kg/m³

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Answer: ((a))

300kg/m³

What is the modular ratio of concrete grade M30 when the effect of creep is NOT considered?

((a))
7.33
((b))
13.33
((c))
10.98
((d))
8.5

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Answer: ((a))

7.33

A steel column has a modulus of elasticity $E = 2 \times 10^5 \text{ MPa}$ and a slenderness ratio (L/r)=100. Using Euler's formula for elastic buckling stress, determine the critical buckling stress $\sigma_{cr}$ of the column.

((a))
98.7 MPa
((b))
197.4 MPa
((c))
39.5 MPa
((d))
78.9 MPa

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Answer: ((a))

98.7 MPa

A concrete mix is being designed for a characteristic compressive strength $(f_{ck})$ of 20 $N/mm^2$ . According to IS 456 : 2000 guidelines, if the standard deviation for the production quality is assumed to be S = 4.0 $N/mm^2$ , what is the required target mean compressive strength $(f_m)$ for the mix design?

((a))
20 $N/mm^2$
((b))
26.6 $N/mm^2$
((c))
30 $N/mm^2$
((d))
32 $N/mm^2$

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Answer: ((a))

20 $N/mm^2$

A steel column has an actual unsupported length of 3.6m. The column is fixed at one end and free at the other, and the radius of gyration of its cross-section is 30mm. Using the effective length method as per IS800 : 2007, determine the slenderness ratio of the column.

((a))
120
((b))
180
((c))
240
((d))
300

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Answer: ((a))

120

A built-up steel compression member is designed to carry a factored axial load of 1800kN. The member uses double lacing placed on two parallel planes, with each lacing bar inclined at 60° to the member’s longitudinal axis. As per design requirements, the lacing system must resist a total transverse shear equal to 2.5% of the axial load. If the shear force is shared equally between the two lacing planes, determine the axial force induced in each lacing bar.

((a))
13kN
((b))
18.8kN
((c))
26kN
((d))
37.5kN

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Answer: ((a))

13kN

A simply supported steel beam of plastic section has a plastic section modulus $Z_p = 600 \times 10^3 mm^3$ . The yield stress of steel is $f_y = 250 MPa$ . The factored shear force acting on the beam is less than $0.6V_d$ Determine the design bending strength of the beam.

((a))
114kNm
((b))
136kNm
((c))
150kNm
((d))
170kNm

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Answer: ((a))

114kNm

A welded plate girder is subjected to major axis bending. The girder has an overall depth $d = 1200 mm$ and web thickness $t_w = 10 mm$ . The girder carries a factored shear force of 900kN. As per IS 800 provisions, determine the design shear stress in the web using the shear area for welded sections.

((a))
60MPa
((b))
75MPa
((c))
90MPa
((d))
105MPa

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Answer: ((a))

60MPa

A rolled steel plate girder has a web depth $d = 1500 mm$ and web thickness $t_w = 12 mm$ . The web is provided with transverse stiffeners. The buckling coefficient for the web panel is $k_v = 6.0$ .

As per IS 800 provisions, determine whether shear buckling verification of the web is necessary.

((a))
Shear buckling check is not required
((b))
Shear buckling check is required
((c))
Shear buckling check is required only if k_v > 7
((d))
Shear buckling check depends only on web thickness

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Answer: ((a))

Shear buckling check is not required

100

A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, then:

i) The ball will move to the front

ii) The bubble will move to the front

iii) The ball will move to the rear

iv) The bubble will move to the rear

<br>

Find out which of the above statements is correct?

((a))
(i)and(ii)
((b))
(i)and(iv)
((c))
(ii)and(iii)
((d))
(iii)and(iv)

Show Answer

Answer: ((a))

(i)and(ii)

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