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GATE 2022 Question Paper CE Civil Engineering (Forenoon)

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Page 1

GATE 2022 General Aptitude
Q.1 – Q.5 Carry ONE mark each.

Q.1 You should _________ when to say _________.

(A) no / no

(B) no / know

(C) know / know

(D) know / no

Q.2 Two straight lines pass through the origin (𝑥 , 𝑦 ) = (0,0). One of them passes
through the point (𝑥 , 𝑦 ) = (1,3) and the other passes through the point
(𝑥 , 𝑦 ) = (1,2).

What is the area enclosed between the straight lines in the interval [0, 1] on
the 𝑥-axis?

(A) 0.5

(B) 1.0

(C) 1.5

(D) 2.0

CE-1 Page 1 of 42

Page 2

Q.3 If

𝑝∶𝑞=1∶2

𝑞∶𝑟=4∶3

𝑟∶𝑠=4∶5

and 𝑢 is 50% more than 𝑠, what is the ratio 𝑝 ∶ 𝑢?

(A) 2 ∶ 15

(B) 16 ∶ 15

(C) 1: 5

(D) 16: 45

CE-1 Page 2 of 42

Page 3

Q.4 Given the statements:

 P is the sister of Q.
 Q is the husband of R.
 R is the mother of S.
 T is the husband of P.
Based on the above information, T is ______ of S.

(A) the grandfather

(B) an uncle

(C) the father

(D) a brother

CE-1 Page 3 of 42

Page 4

Q.5 In the following diagram, the point R is the center of the circle. The lines PQ
and ZV are tangential to the circle. The relation among the areas of the squares,
PXWR, RUVZ and SPQT is

(A) Area of SPQT = Area of RUVZ = Area of PXWR

(B) Area of SPQT = Area of PXWR  Area of RUVZ

(C) Area of PXWR = Area of SPQT  Area of RUVZ

(D) Area of PXWR = Area of RUVZ  Area of SPQT

CE-1 Page 4 of 42

Page 5

Q. 6 – Q. 10 Carry TWO marks each.

Q.6 Healthy eating is a critical component of healthy aging. When should one start
eating healthy? It turns out that it is never too early. For example, babies who
start eating healthy in the first year are more likely to have better overall health
as they get older.

Which one of the following is the CORRECT logical inference based on the
information in the above passage?

(A) Healthy eating is important for those with good health conditions, but not for
others

(B) Eating healthy can be started at any age, earlier the better

(C) Eating healthy and better overall health are more correlated at a young age, but
not older age

(D) Healthy eating is more important for adults than kids

CE-1 Page 5 of 42

Page 6

Q.7 P invested ₹ 5000 per month for 6 months of a year and Q invested ₹ 𝑥 per
month for 8 months of the year in a partnership business. The profit is shared in
proportion to the total investment made in that year.

If at the end of that investment year, Q receives of the total profit, what is the

value of 𝑥 (in ₹)?

(A) 2500

(B) 3000

(C) 4687

(D) 8437

CE-1 Page 6 of 42

Page 7

Q.8 16
14
14
12 11
10 9

Frequency
8 7
6
4
4 3
2
2
0
3 4 5 6 7 8 9
Marks

The above frequency chart shows the frequency distribution of marks obtained
by a set of students in an exam.

From the data presented above, which one of the following is CORRECT?

(A) mean > mode > median

(B) mode > median > mean

(C) mode > mean > median

(D) median > mode > mean

CE-1 Page 7 of 42

Page 8

Q.9 In the square grid shown on the left, a person standing at P2 position is required
to move to P5 position.

The only movement allowed for a step involves, “two moves along one
direction followed by one move in a perpendicular direction”. The permissible
directions for movement are shown as dotted arrows in the right.

For example, a person at a given position Y can move only to the positions
marked X on the right.

Without occupying any of the shaded squares at the end of each step, the
minimum number of steps required to go from P2 to P5 is

1 2 3 4 5

P

Q

R

S

T

Example: Allowed steps for a person at Y

(A) 4

(B) 5

(C) 6

(D) 7

CE-1 Page 8 of 42

Page 9

Q.10

Consider a cube made by folding a single sheet of paper of appropriate shape.
The interior faces of the cube are all blank. However, the exterior faces that are
not visible in the above view may not be blank.

Which one of the following represents a possible unfolding of the cube?

(A)

(B)

(C)

(D)

CE-1 Page 9 of 42

Page 10

Q.11 - 35 Carry ONE mark each.

Q.11 Consider the following expression:

z  sin  y  it   cos  y  it 

where z, y, and t are variables, and i  1 is a complex number. The partial
differential equation derived from the above expression is

(A) 2 z 2 z
 0
t 2 y 2

(B) 2 z 2 z
 0
t 2 y 2

(C) z z
i 0
t y

(D) z z
i 0
t y

CE-1 Page 10 of 42

Page 11

Q.12 For the equation

𝑑 𝑦 𝑑𝑦
+𝑥 +𝑥 𝑦 =0
𝑑𝑥 𝑑𝑥
the correct description is

(A) an ordinary differential equation of order 3 and degree 2.

(B) an ordinary differential equation of order 3 and degree 3.

(C) an ordinary differential equation of order 2 and degree 3.

(D) an ordinary differential equation of order 3 and degree 3/2.

Q.13 The hoop stress at a point on the surface of a thin cylindrical pressure vessel is
computed to be 30.0 MPa. The value of maximum shear stress at this point is

(A) 7.5 MPa

(B) 15.0 MPa

(C) 30.0 MPa

(D) 22.5 MPa

CE-1 Page 11 of 42

Page 12

Q.14 In the context of elastic theory of reinforced concrete, the modular ratio is
defined as the ratio of

(A) Young’s modulus of elasticity of reinforcement material to Young’s modulus of
elasticity of concrete.

(B) Young’s modulus of elasticity of concrete to Young’s modulus of elasticity of
reinforcement material.

(C) shear modulus of reinforcement material to the shear modulus of concrete.

(D) Young’s modulus of elasticity of reinforcement material to the shear modulus of
concrete.

Q.15 Which of the following equations is correct for the Pozzolanic reaction?

(A) Ca(OH)2 + Reactive Superplasticiser + H2O  C-S-H

(B) Ca(OH)2 + Reactive Silicon dioxide + H2O  C-S-H

(C) Ca(OH)2 + Reactive Sulphates + H2O  C-S-H

(D) Ca(OH)2 + Reactive Sulphur + H2O  C-S-H

CE-1 Page 12 of 42

Page 13

Q.16 Consider the cross-section of a beam made up of thin uniform elements having
thickness 𝑡 (𝑡 ≪ 𝑎) shown in the figure. The (x, y) coordinates of the points along
the center-line of the cross-section are given in the figure.

The coordinates of the shear center of this cross-section are:

(A) 𝑥 = 0, 𝑦 = 3𝑎

(B) 𝑥 = 2𝑎, 𝑦 = 2𝑎

(C) 𝑥 = −𝑎, 𝑦 = 2𝑎

(D) 𝑥 = −2𝑎, 𝑦 = 𝑎

CE-1 Page 13 of 42

Page 14

Q.17 Four different soils are classified as CH, ML, SP, and SW, as per the Unified
Soil Classification System. Which one of the following options correctly
represents their arrangement in the decreasing order of hydraulic conductivity?

(A) SW, SP, ML, CH

(B) CH, ML, SP, SW

(C) SP, SW, CH, ML

(D) ML, SP, CH, SW

Q.18 Let 𝜎 and 𝜎 denote the effective vertical stress and effective horizontal stress,
respectively. Which one of the following conditions must be satisfied for a soil
element to reach the failure state under Rankine’s passive earth pressure
condition?

(A) 𝜎 <𝜎

(B) 𝜎 >𝜎

(C) 𝜎 =𝜎

(D) 𝜎 +𝜎 = 0

CE-1 Page 14 of 42

Page 15

Q.19 With respect to fluid flow, match the following in Column X with Column Y:

Column X Column Y

(P) Viscosity (I) Mach number

(Q) Gravity (II) Reynolds number

(R) Compressibility (III) Euler number

(S) Pressure (IV) Froude number

Which one of the following combinations is correct?

(A) (P) – (II), (Q) – (IV), (R) – (I), (S) – (III)

(B) (P) – (III), (Q) – (IV), (R) – (I), (S) – (II)

(C) (P) – (IV), (Q) – (II), (R) – (I), (S) – (III)

(D) (P) – (II), (Q) – (IV), (R) – (III), (S) – (I)

CE-1 Page 15 of 42

Page 16

Q.20 Let  represent soil suction head and K represent hydraulic conductivity of the
soil. If the soil moisture content  increases, which one of the following
statements is TRUE?

(A)  decreases and K increases.

(B)  increases and K decreases.

(C) Both  and K decrease.

(D) Both  and K increase.

Q.21 A rectangular channel with Gradually Varied Flow (GVF) has a changing bed
slope. If the change is from a steeper slope to a steep slope, the resulting GVF
profile is

(A) S3

(B) S1

(C) S2

(D) either S1 or S2, depending on the magnitude of the slopes

CE-1 Page 16 of 42

Page 17

Q.22 The total hardness in raw water is 500 milligram per liter as CaCO3. The total
hardness of this raw water, expressed in milligram equivalent per liter, is

(Consider the atomic weights of Ca, C, and O as 40 g/mol, 12 g/mol, and
16 g/mol, respectively.)

(A) 10

(B) 100

(C) 1

(D) 5

Q.23 An aerial photograph is taken from a flight at a height of 3.5 km above mean
sea level, using a camera of focal length 152 mm. If the average ground
elevation is 460 m above mean sea level, then the scale of the photograph is

(A) 1 : 20000

(B) 1 : 20

(C) 1 : 100000

(D) 1 : 2800

CE-1 Page 17 of 42

Page 18

Q.24 A line between stations P and Q laid on a slope of 1 in 5 was measured as 350 m
using a 50 m tape. The tape is known to be short by 0.1 m.

The corrected horizontal length (in m) of the line PQ will be

(A) 342.52

(B) 349.30

(C) 356.20

(D) 350.70

Q.25 The matrix M is defined as

1 3
𝑴=
4 2
and has eigenvalues 𝟓 and − 𝟐. The matrix 𝑸 is formed as

𝑸 = 𝑴 − 4𝑴 − 2𝑴
Which of the following is/are the eigenvalue(s) of matrix Q ?

(A) 

(B) 25

(C) 20

(D) 30



CE-1 Page 18 of 42

Page 19

Q.26 For wastewater coming from a wood pulping industry, Chemical Oxygen
Demand (COD) and 5-day Biochemical Oxygen Demand (BOD5) were
determined. For this wastewater, which of the following statement(s) is/are
correct?

(A) COD > BOD5

(B) COD ≠ BOD5

(C) COD < BOD5

(D) COD = BOD5

Q.27 Which of the following process(es) can be used for conversion of salt water into
fresh water?

(A) Microfiltration

(B) Electrodialysis

(C) Ultrafiltration

(D) Reverse osmosis

CE-1 Page 19 of 42

Page 20

Q.28 A horizontal curve is to be designed in a region with limited space. Which of
the following measure(s) can be used to decrease the radius of curvature?

(A) Decrease the design speed.

(B) Increase the superelevation.

(C) Increase the design speed.

(D) Restrict vehicles with higher weight from using the facility.

CE-1 Page 20 of 42

Page 21

Q.29 Consider the following recursive iteration scheme for different values of variable
𝑃 with the initial guess 𝑥 = 𝟏:

1 𝑃
𝑥 = 𝑥 + , 𝑛 = 1, 2, 3, 4, 5
2 𝑥

For 𝑃 = 𝟐, 𝑥 is obtained to be 1.414, rounded-off to three decimal places. For
𝑃 = 𝟑, 𝑥 is obtained to be 1.732, rounded-off to three decimal places.

If 𝑃 = 𝟏𝟎, the numerical value of 𝑥 is _________ . (round off to three
decimal places)

Q.30 The Fourier cosine series of a function is given by:

𝑓(𝑥) = 𝑓 cos 𝑛𝑥

For 𝑓(𝑥) = cos 𝑥, the numerical value of (𝑓 + 𝑓 ) is ______ . (round off
to three decimal places)

Q.31 An uncompacted heap of soil has a volume of 10000 m3 and void ratio of 1.
If the soil is compacted to a volume of 7500 m3, then the corresponding void
ratio of the compacted soil is __________. (round off to one decimal place)

Q.32 A concentrated vertical load of 3000 kN is applied on a horizontal ground
surface. Points P and Q are at depths 1 m and 2 m below the ground,
respectively, along the line of application of the load. Considering the ground to
be a linearly elastic, isotropic, semi-infinite medium, the ratio of the increase in
vertical stress at P to the increase in vertical stress at Q is ________. (in integer)

CE-1 Page 21 of 42

Page 22

Q.33 At a site, Static Cone Penetration Test was carried out. The measured point (tip)
resistance qc was 1000 kPa at a certain depth. The friction ratio (fr) was estimated
as 1 % at the same depth.

The value of sleeve (side) friction (in kPa) at that depth was
___________________ . (in integer)

Q.34 During a particular stage of the growth of a crop, the consumptive use of water is
2.8 mm/day. The amount of water available in the soil is 50 % of the maximum
depth of available water in the root zone. Consider the maximum root zone depth
of the crop as 80 mm and the irrigation efficiency as 70 %.

The interval between irrigation (in days) will be _________. (round off to the
nearest integer)

Q.35 The bearing of a survey line is N3117W. Its azimuth observed from north is
______ deg. (round off to two decimal places)

CE-1 Page 22 of 42

Page 23

Q. 36 - 65 Carry TWO marks each.

Q.36 The Cartesian coordinates of a point P in a right-handed coordinate system are
(1, 1, 1). The transformed coordinates of P due to a 45 clockwise rotation of
the coordinate system about the positive x-axis are

(A) 1, 0, √2

(B) 1, 0, √2

(C) 1, 0, √2

(D) 1, 0, √2

CE-1 Page 23 of 42

Page 24

Q.37 A semi-circular bar of radius R m, in a vertical plane, is fixed at the end G, as
shown in the figure. A horizontal load of magnitude P kN is applied at the end
H. The magnitude of the axial force, shear force, and bending moment at point
Q for θ = 45, respectively, are

(A) P P PR
kN, kN, and kNm
√ √ √

(B) P P
kN, kN, and 0 kNm
√ √

(C) P PR
0 kN, kN, and kNm
√ √

(D) P PR
kN, 0 kN, and kNm
√ √

CE-1 Page 24 of 42

Page 25

Q.38 A weld is used for joining an angle section ISA 100 mm × 100 mm × 10 mm to
a gusset plate of thickness 15 mm to transmit a tensile load. The permissible
stress in the angle is 150 MPa and the permissible shear stress on the section
through the throat of the fillet weld is 108 MPa. The location of the centroid of
the angle is represented by Cyy in the figure, where Cyy = 28.4 mm. The area of
cross-section of the angle is 1903 mm2. Assuming the effective throat thickness
of the weld to be 0.7 times the given weld size, the lengths L1 and L2 (rounded-
off to the nearest integer) of the weld required to transmit a load equal to the
full strength of the tension member are, respectively

(A) 541 mm and 214 mm

(B) 214 mm and 541 mm

(C) 380 mm and 151 mm

(D) 151 mm and 380 mm

CE-1 Page 25 of 42

Page 26

Q.39 The project activities are given in the following table along with the duration
and dependency.

Activities Duration (days) Depends on

P 10 -

Q 12 -

R 5 P

S 10 Q

T 10 P, Q

Which one of the following combinations is correct?

(A) Total duration of the project = 22 days, Critical path is Q  S

(B) Total duration of the project = 20 days, Critical path is Q  T

(C) Total duration of the project = 22 days, Critical path is P  T

(D) Total duration of the project = 20 days, Critical path is P  R

CE-1 Page 26 of 42

Page 27

Q.40 The correct match between the physical states of the soils given in Group I and
the governing conditions given in Group II is

Group I Group II
1. normally consolidated soil P. sensitivity > 16
2. quick clay Q. dilation angle = 0
3. sand in critical state R. liquid limit > 50
4. clay of high plasticity S. over consolidation ratio = 1

(A) 1-S, 2-P, 3-Q, 4-R

(B) 1-Q, 2-S, 3-P, 4-R

(C) 1-Q, 2-P, 3-R, 4-S

(D) 1-S, 2-Q, 3-P, 4-R

CE-1 Page 27 of 42

Page 28

Q.41 As per Rankine’s theory of earth pressure, the inclination of failure planes is

(𝟒𝟓 + )° with respect to the direction of the minor principal stress.
𝟐

The above statement is correct for which one of the following options?

(A) Only the active state and not the passive state

(B) Only the passive state and not the active state

(C) Both active as well as passive states

(D) Neither active nor passive state

Q.42 Henry’s law constant for transferring O2 from air into water, at room
mmol
temperature, is 1.3 . Given that the partial pressure of O2 in the
liter-atm
atmosphere is 0.21 atm, the concentration of dissolved oxygen (mg/liter) in
water in equilibrium with the atmosphere at room temperature is

(Consider the molecular weight of O2 as 32 g/mol)

(A) 8.7

(B) 0.8

(C) 198.1

(D) 0.2

CE-1 Page 28 of 42

Page 29

-
Q.43 In a water sample, the concentrations of Ca2+, Mg2+ and HCO3 are 100 mg/L,
36 mg/L and 122 mg/L, respectively. The atomic masses of various elements are:
Ca = 40, Mg = 24, H = 1, C = 12, O = 16.

The total hardness and the temporary hardness in the water sample
(in mg/L as CaCO3) will be

(A) 400 and 100, respectively.

(B) 400 and 300, respectively.

(C) 500 and 100, respectively.

(D) 800 and 200, respectively.

CE-1 Page 29 of 42

Page 30

Q.44 Consider the four points P, Q, R, and S shown in the Greenshields fundamental
speed-flow diagram. Denote their corresponding traffic densities by 𝑘 , 𝑘 , 𝑘 ,
and 𝑘 , respectively. The correct order of these densities is

(A) 𝑘 >𝑘 >𝑘 >𝑘

(B) 𝑘 >𝑘 >𝑘 >𝑘

(C) 𝑘 >𝑘 >𝑘 >𝑘

(D) 𝑘 >𝑘 >𝑘 >𝑘

CE-1 Page 30 of 42

Page 31

Q.45 Let max {𝑎, 𝑏} denote the maximum of two real numbers 𝑎 and 𝑏.
Which of the following statement(s) is/are TRUE about the function
𝑓(𝑥) = max{3 − 𝑥, 𝑥 − 1} ?

(A) It is continuous on its domain.

(B) It has a local minimum at 𝑥 = 2.

(C) It has a local maximum at 𝑥 = 2.

(D) It is differentiable on its domain.

CE-1 Page 31 of 42

Page 32

Q.46 A horizontal force of P kN is applied to a homogeneous body of weight 25 kN,
as shown in the figure. The coefficient of friction between the body and the
floor is 0.3. Which of the following statement(s) is/are correct?

(A) The motion of the body will occur by overturning.

(B) Sliding of the body never occurs.

(C) No motion occurs for P ≤ 6 kN.

(D) The motion of the body will occur by sliding only.

CE-1 Page 32 of 42

Page 33

Q.47 In the context of cross-drainage structures, the correct statement(s) regarding
the relative positions of a natural drain (stream/river) and an irrigation canal,
is/are

(A) In an aqueduct, natural drain water goes under the irrigation canal, whereas in a
super-passage, natural drain water goes over the irrigation canal.

(B) In a level crossing, natural drain water goes through the irrigation canal.

(C) In an aqueduct, natural drain water goes over the irrigation canal, whereas in a
super-passage, natural drain water goes under the irrigation canal.

(D) In a canal syphon, natural drain water goes through the irrigation canal.

CE-1 Page 33 of 42

Page 34

Q.48 Consider the differential equation

dy
 4  x  2  y
dx
For the initial condition y = 3 at x = 1, the value of 𝑦 at x = 1.4 obtained using
Euler’s method with a step-size of 0.2 is _________. (round off to one decimal
place)

Q.49 A set of observations of independent variable (x) and the corresponding
dependent variable (y) is given below.

x 5 2 4 3

y 16 10 13 12

Based on the data, the coefficient a of the linear regression model

𝑦 = 𝑎 + 𝑏𝑥
is estimated as 6.1.

The coefficient b is ______________ . (round off to one decimal place)

CE-1 Page 34 of 42

Page 35

Q.50 The plane truss shown in the figure is subjected to an external force P. It is given
that P = 70 kN, a = 2 m, and b = 3 m.

The magnitude (absolute value) of force (in kN) in member EF is _______.
(round off to the nearest integer)

CE-1 Page 35 of 42

Page 36

Q.51 Consider the linearly elastic plane frame shown in the figure. Members HF, FK
and FG are welded together at joint F. Joints K, G and H are fixed supports. A
counter-clockwise moment M is applied at joint F. Consider flexural rigidity
EI = 105 kN-m2 for each member and neglect axial deformations.

If the magnitude (absolute value) of the support moment at H is 10 kN-m, the
magnitude (absolute value) of the applied moment M (in kN-m) to maintain static
equilibrium is ___________. (round off to the nearest integer)

CE-1 Page 36 of 42

Page 37

Q.52 Consider a simply supported beam PQ as shown in the figure. A truck having
100 kN on the front axle and 200 kN on the rear axle, moves from left to right.
The spacing between the axles is 3 m. The maximum bending moment at point
R is _________ kNm. (in integer)

Q.53 A reinforced concrete beam with rectangular cross section (width = 300 mm,
effective depth = 580 mm) is made of M30 grade concrete. It has 1%
longitudinal tension reinforcement of Fe 415 grade steel. The design shear
strength for this beam is 0.66 N/mm2. The beam has to resist a factored shear
force of 440 kN. The spacing of two-legged, 10 mm diameter vertical stirrups of
Fe 415 grade steel is __________mm. (round off to the nearest integer)

CE-1 Page 37 of 42

Page 38

Q.54 A square concrete pile of 10 m length is driven into a deep layer of uniform
homogeneous clay. Average unconfined compressive strength of the clay,
determined through laboratory tests on undisturbed samples extracted from the
clay layer, is 100 kPa. If the ultimate compressive load capacity of the driven
pile is 632 kN, the required width of the pile is _______ mm. (in integer)

(Bearing capacity factor Nc = 9; adhesion factor  = 0.7)

Q.55 A raft foundation of 30 m × 25 m is proposed to be constructed at a depth of 8 m
in a sand layer. A 25 m thick saturated clay layer exists 2 m below the base of
the raft foundation. Below the clay layer, a dense sand layer exists at the site.
A 25 mm thick undisturbed sample was collected from the mid-depth of the clay
layer and tested in a laboratory oedometer under double drainage condition. It
was found that the soil sample had undergone 50 % consolidation settlement in
10 minutes.

The time (in days) required for 25 % consolidation settlement of the raft
foundation will be ____________________. (round off to the nearest integer)

Q.56 A two-hour duration storm event with uniform excess rainfall of 3 cm occurred
on a watershed. The ordinates of streamflow hydrograph resulting from this event
are given in the table.

Time
0 1 2 3 4 5 6 7
(hours)
Streamflow
10 16 34 40 31 25 16 10
(m3/s)

Considering a constant baseflow of 10 m3/s, the peak flow ordinate (in m3/s) of
one-hour unit hydrograph for the watershed is ________ . (in integer)

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Q.57 Two reservoirs are connected by two parallel pipes of equal length and of
diameters 20 cm and 10 cm, as shown in the figure (not drawn to scale). When
the difference in the water levels of the reservoirs is 5 m, the ratio of discharge in
the larger diameter pipe to the discharge in the smaller diameter pipe is
____________. (round off to two decimal places)

(Consider only loss due to friction and neglect all other losses. Assume the
friction factor to be the same for both the pipes)

Q.58 Depth of water flowing in a 3 m wide rectangular channel is 2 m. The channel
carries a discharge of 12 m3/s. Take g = 9.8 m/s2.

The bed width (in m) at contraction, which just causes the critical flow, is
_________ without changing the upstream water level. (round off to two decimal
places)

Q.59 A wastewater sample contains two nitrogen species, namely ammonia and
nitrate. Consider the atomic weight of N, H, and O as 14 g/mol, 1 g/mol, and
16 g/mol, respectively. In this wastewater, the concentration of ammonia is
34 mg NH3/liter and that of nitrate is 6.2 mg NO3 /liter. The total nitrogen
concentration in this wastewater is _______ milligram nitrogen per liter.
(round off to one decimal place)

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Q.60 A 2 % sewage sample (in distilled water) was incubated for 3 days at 27 °C
temperature. After incubation, a dissolved oxygen depletion of 10 mg/L was
recorded. The biochemical oxygen demand (BOD) rate constant at 27 °C was
found to be 0.23 day-1 (at base e).

The ultimate BOD (in mg/L) of the sewage will be_____________. (round off to
the nearest integer)

Q.61 A water treatment plant has a sedimentation basin of depth 3 m, width 5 m, and
length 40 m. The water inflow rate is 500 m3/h. The removal fraction of particles
having a settling velocity of 1.0 m/h is_______. (round off to one decimal place)

(Consider the particle density as 2650 kg/m3 and liquid density as 991 kg/m3)

Q.62 A two-phase signalized intersection is designed with a cycle time of 100 s. The
amber and red times for each phase are 4 s and 50 s, respectively. If the total
lost time per phase due to start-up and clearance is 2 s, the effective green time
of each phase is ______s. (in integer)

Q.63 At a traffic intersection, cars and buses arrive randomly according to independent
Poisson processes at an average rate of 4 vehicles per hour and 2 vehicles per
hour, respectively. The probability of observing at least 2 vehicles in 30 minutes
is ______. (round off to two decimal places)

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Q.64 The vehicle count obtained in every 10 minute interval of a traffic volume survey
done in peak one hour is given below.

Time Interval Vehicle Count
(in minutes)

0 – 10 10

10 – 20 11

20 – 30 12

30 – 40 15

40 – 50 13

50 – 60 11

The peak hour factor (PHF) for 10 minute sub-interval is __________.
(round off to one decimal place)

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Q.65 For the dual-wheel carrying assembly shown in the figure, P is the load on each
wheel, a is the radius of the contact area of the wheel, s is the spacing between
the wheels, and d is the clear distance between the wheels. Assuming that the
ground is an elastic, homogeneous, and isotropic half space, the ratio of
Equivalent Single Wheel Load (ESWL) at depth z = d/2 to the ESWL at depth
z = 2s is ___________. (round off to one decimal place)
(Consider the influence angle to be 45° for the linear dispersion of stress with
depth)

END OF THE QUESTION PAPER

CE-1 Page 42 of 42

Document Details

Board / OrgIIT
ExamGraduate Aptitude Test in Engineering
TypeQuestion Paper
Pages42
Languageenglish
Updated22 Jul 2026