BPSC AE 2025: Assistant Engineer (Civil/Mechanical/Electrical) (Advt. 29/2025), Paper V Civil Engineering
Text of page 1
Bihar Public Service Commission
Advt. No. 29/2025, Civil Engineering, Paper-V
Exam Date: 19-07-2025, 1st Shift
Final Answer Key (Set-I)
Q. No. Answer Key Q. No. Answer Key
1 B 26 D
2 D 27 C
3 C 28 B
4 A 29 B
5 B 30 C
6 A 31 D
7 A 32 B
8 D 33 B
9 D 34 D
10 D 35 B
11 B 36 D
12 B 37 D
13 C 38 A
14 B 39 B
15 B 40 D
16 C 41 A
17 A 42 C
18 A 43 A
Text of page 2
Q. No. Answer Key Q. No. Answer Key
19 D 44 B
20 B 45 A
21 B 46 A
22 A 47 D
23 C 48 C
24 A 49 B
25 A 50 Deleted
(Set-J)
Q. No. Answer Key Q. No. Answer Key
1 B 26 D
2 B 27 D
3 C 28 C
4 C 29 D
5 D 30 B
6 B 31 D
7 A 32 A
8 A 33 A
9 A 34 D
10 C 35 A
11 A 36 C
12 C 37 A
13 D 38 B
14 B 39 B
Text of page 3
Q. No. Answer Key Q. No. Answer Key
15 C 40 C
16 B 41 C
17 C 42 C
18 B 43 A
19 A 44 D
20 C 45 C
21 D 46 B
22 D 47 B
23 A 48 D
24 B 49 B
25 Deleted 50 C
(Set-K)
Q. No. Answer Key Q. No. Answer Key
1 B 26 C
2 B 27 B
3 C 28 D
4 B 29 D
5 C 30 D
6 C 31 A
7 B 32 B
8 C 33 D
9 A 34 B
10 A 35 A
Text of page 4
Q. No. Answer Key Q. No. Answer Key
11 D 36 B
12 D 37 C
13 A 38 B
14 A 39 B
15 B 40 B
16 B 41 C
17 D 42 B
18 C 43 D
19 B 44 A
20 B 45 Deleted
21 C 46 C
22 A 47 A
23 A 48 A
24 A 49 C
25 C 50 A
(Set-L)
Q. No. Answer Key Q. No. Answer Key
1 A 26 B
2 D 27 D
3 D 28 C
4 D 29 A
5 A 30 C
6 A 31 C
Text of page 5
Answer Key Q. No. Answer Key
Q. No.
7 B 32 C
8 C 33 D
9 B 34 B
10 C 35 A
11 D 36 D
12 A 37 A
13 B 38 B
14 C 39 A
15 A 40 D
16 A 41 C
17 B 42 A
18 A 43 D
19 B 44 C
20 C 45 C
21 B 46 C
22 D 47 A
23 A 48 A
24 D 49 Deleted
25 A 50 D
Reason as per Set-I
Q.No.- 01 - No Change.
Reason :- Since both the shear force and axial force reduce the plastic moment
capacity of a structure resulting in formation of a plastic hinge of a
structure. Therefore, the correct option will be 'B'.
Text of page 6
Q.No.- 03 - No Change.
Reason :- To transfer the multistorey Portal frame, into a number of fixed support
Cantilever Columns, the imaginary cut is applied at each and every
horizontal numbers. This required eight number of imaging cuts to make
it fixed support Column. Therefore, the Degree of indeterminacy
(external and internal) will be 8×3 = 24
Q.No.- 06 - No Change.
Reason :- A beam-column flexible connection is known as a shear connection. It is
designed to transfer shear force between a beam and a column while
allowing the beam to rotate freely without developing significant
bending resistance.
Q.No.- 07 - No Change.
Reason :- Degree of kinematic indeterminacy
Dk= 3j - r - m
where,
j = no. of joints =4
r = no. of reactions = 2× 3 = 6
m = no. of members = 3
Dk = 3×4-6-3=3
Q.No.- 10 - The Provisional answer is option 'A' but the correct answer is option 'D'.
Reason :- The relation between bending moment and slope is given as M = EI
After the first integration, the equation will be Mx = EI + c1
As the slope is constant, and there is one more constant C 1 in the above
equation, therefore, the moment will not be zero, but it will be constant
from the above equation .
Q.No.- 12 - The Provisional answer is option 'D' but the correct answer is option 'B'.
Reason :- With usual notation,
n. =
=
=0.310
The seepage velocity =
=
=22.55 10-7 m/s
Text of page 7
Q.No.- 14 - No Change.
Reason :- As per IS 1893 Part-I, the design horizontal seismic
coefficient =
Q.No.- 16- The Provisional answer is option 'B' but the correct answer is option 'C'.
Reason :- If A and B are none zero square matrices and singular, then the product
of the singular matrices will be zero. If either matrix A or matrix B is
singular, the product AB will not be zero.
Q.No.- 18- No Change.
Reason :- Maxwell's Reciprocal theorem is valid for linear elastic structures that
follow Hooke's Law, where the relationship between loads and
displacements is linear and the principle of superposition holds good.
Q.No.- 20- No Change.
Reason :- In a compact section, there is inadequate plastic capacity for forming the
plastic collapse mechanism. Therefore, plastic redistribution of stress
will take place.
Q.No.- 23- No Change.
Reason :- The option 'C' is correct as Cu of l indicates the uniformly grader soil,
while the values of Cu > l signify a wide range of soil particle sizes i.e
the characteristics of well grader soils.
Q.No.- 24 - No Change.
Reason :- As per IS 456-2000, the percentage increase in strength will be 10% , if
the storey height is equal to the length of a RCC wall.
Q.No.- 26 - No Change.
Reason :- As per IS code 1343-2012 Clause 18.6
Q.No.- 27 - No Change.
Reason :-
w=
p=
p= w=
P= 300 kN
Q.No.- 28- No Change.
Reason :- The point of contra flexure is a point where bending moment changes
sign.
Q.No.- 29- The Provisional answer key option 'D' But the correct answer is option
'B'.
Reason :- Intermediate transverse and longitudinal web stiffness are provided to
prevent local buckling of the web due to concentrated loading.
Text of page 8
Q.No.- 31- No Change.
Reason :- Using moment area method, area of diagram upto half length of the
beam = 0
After solving,
(-ve sign indicates the assumed direction is opposite to the actual moment).
Q.No.- 33 - No Change.
Reason :- The thickness of a base plate is primarily determined by ensuring that its
flexural strength is sufficient to withstand the upward pressure from the
concrete foundation.
Q.No.- 34 - No Change.
Reason :- We can say that the deflection increases then decreases from top to first
bracing and again decreases near the structure support.
Q.No.- 36 - No Change.
Reason :- At plastic hinges the curvature is infinite because the material at that
section is fully yielded and can undergo significant deformation without
additive increase in moment. As the radius of curvature at this point is
zero, hence, the curvature becomes infinitely large.
Q.No.- 38 - No Change.
Reason :- As per IS Code 1343-2012
Q.No.- 42 - No Change.
Reason :- As per IS Code 1893-Part-I, there are four seismic zones in India.
Q.No.- 45 - No Change.
Reason :- The ratio of the failure load (also called collapse load) to the working
load is called the load factor.
Q.No.- 46 - No Change.
Reason :- The mass of water may be greater than the mass of solid soils.
Therefore, water content of a soil can be greater than 100 %.
Q.No.- 47 - No Change.
Reason :- As per clause no 28.5.1.1 of IS 456-2000.
Q.No.- 50 - Deleted.
Reason :- The permissible stress in tension is given as 145MPa. Whether it is
related to steel or concrete is not mentioned in the question. It is also not
mentioned to calculate the neutral axis depth by working stress method
or limit state method. The grade of concrete is also not given. Hence, the
question is deleted.Page 1 of 12
Source: Bihar Public Service Commission. Question paper published by Bihar Public Service Commission.