HIL Question-Paper Contributed by Deanandan updated on May 2019

1. A rectangular beam of length I supported at its two ends carries a central concentrated load W at its centre. The maximum deflection occurs

at the ends

at 1/3 from both ends

at 1/4 from both ends

.
2. If the depth is kept constant for beam of uniform strength then its width will vary proportional to

Sqrt(M)

M^2

M^3

.
3. When a beam deflects into a uniform strength then its width will vary proportional to

I/2R

I/8R

I^2 /2d

.
4. The longitudinal stress in a thin cylindrical shell is

Pd/2t

Pt/4d

Pt/2d

.
5. The ratio of maximum shear stress and average shear stress for a rectangular section is

2

2.5

3

.
6. A fixed beam of span L carries a central point load W. The maximum sagging bending moment in the beam is

WL/2

WL/8

WL/16

.
7. Air entrainment in the concrete increases

workability

the effects of temperature

the unit weight

.
8. The relation between modulus of rupture Fcr and characteristic strength of concrete Fck is given by

Fcr = 0.5 S Fck

Fcr = 0.7 S Fck

Fcr = 1.2 S Fck

.
9. The compressive strength of 100 mm cube as compared to 150 mm cube is always

less

more

may be any of the above

.
10. For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine's theory

is always less than 1

can be more than 1

can be less than 1

.
11. For bars in tension a standard hook has an anchorage value equivalent to a strength length of

8

12

24

.
12. Cube strength of controlled concrete to be used for pre-tensioned and post-tensioned work respectively should not be less than

350 Kg/cm^2 and 420 Kg/cm^2

420 Kg/cm^2 and 350 Kg/cm^2

530 Kg/cm^2 and 420 Kg/cm^2

.
13. The creep strains are

caused due to live loads only

.
14. Ratio of compressive strength to tensile strength of concrete

decreases with age

remains constant

none of the above

.
15. In limit state design of concrete for flexure, the area of stress block is taken as

0.42 Fck Xu

0.446 Fck Xu

0.53 Fck Xu

.
16. The fitness modulus of the fine aggregate is in the range of

3.5 to 5.0

5.0 to 7.0

6.0 to 8.5

.
17. According to IS:456-1978, the maximum reinforcement in a column is

2%

4%

8%

.
18. The minimum cover in a slab should neither be less than the diameter of bar nor less than

10 mm

20 mm

13 mm

.
19. If the permissible stress in steel in tension is 140 N/mm^2, Permissible stress in concrete in bending compression is 5N / mm^2. Then the depth of neutral axis for a singly reinforced rectangular balanced section will be

0.35 d

0.45 d

dependent on grade of concrete also

.
20. The slab is designed as one way if the ratio of long span to short span is

less than 1

between 1 and 1.5

between 1.5 and 1.2

.
21. In any beam when the moment of inertia about the neutral axis is doubled, its deflection is

doubled

tripled

minimum

.
22. The limits of percentage of the longitudinal reinforcement in a column is given by

0.15% to 2%

0.8% to 4%

0.8% to 8%

.
23. A rigid prop provided for a beam

brings the bending for a beam

brings the deflection at the prop to zero-Answer

brings the slopes at the section to zero

brings the shear force at the section to zero

.
24. In a simply supported beam AB with a concentrated load W at a distance 'a' from support A and 'b' from support B, the deflection under the load is

wa^2 / 3EI

wa^2 b^2 /3EI

wa^2 b + 2/EIL

.
25. For the design of retaining walls the minimum factor of safety against over-turning is taken as

1.5

2.5

3.0

.
26. A cantilever beam is loaded by a point load at the free end. It is likely to fail by B.M.

at mid span

none

.
27. The distance between centre lines of a broad gauge is 1.686m. The most economic length of sleeper for efficient distribution of B.M. is

1.866 m

3.866 m

0.866 m

.
28. In a simply supported beam of span L carrying an eccentric couple M acting at a distance A from the left support, the reaction included at the support is

L/M

ML

1/ML

.
29. Area of shear force diagram between two sections is

70 KNm

280 KNm

can not be found

.
30. The section modulus of square section of side A is

a^2 /6

a^4 /12

a^3 /12

.
31. The minimum percentage of mild steel reinforcement in walls of RCC water tanks of 450 mm thick is about

0.30

0.24

0.16

.
31. A beam of span L m is simply supported at the ends. It is loaded by two equal clockwise moments at the supports. Point of contra flexure acts at

0.25 m from left support

0.25 m from right support

none of these

.
32. The ratio of flexibility of loose beams (b x d) places one over the other to the flexibility of one integral beam (nb x d) is

h^2

1/h^2

h^3

.
33. The earth pressure at a depth d is P the earth pressure at depth d/2 is

P

4P

0.5P

.
34. A reinforced concrete column is considered as a short column, if its slenderness ratio L/bn is less than

20

18

15

.
35. A common footing provided for two columns is called a

mat foundation

raft foundation

common foundation

.
36. For reinforced concrete (M15) members immersed in sea water the cover shall be

Same as in the usual case

25 mm more than the cover in the usual cases

40 mm more than the cover in the usual cases

50 mm more than the cover in the usual cases-Answer

.
37. The modulus of elasticity of steel is

150 KN/mm^2

250 KN/mm^2

275 KN/mm^2

.
38. The number of rivets for connecting a strut to a gusset plate shall not be less than

3

4

5

.
39. The inclination of a lacing bar with the axis of the compression member shall not exceed

60

45

30

.
40. For unstiffened webs of girders, the thickness of web shall not be less than

D1/50

D1/100

D1/150

.
41. Spacing of vertical stiffeners in a girder shall not be less than

0.50d

0.40d

0.25d

.
42. The maximum bending moment for a purling may be taken as

WL/8

WL/12

WL/15

.
43. If the foundations of all the columns of a structure are designed on the total live and dead load basis, then

there will be no settlement of columns

there will be no differential settlements

the settlement of exterior columns will be more than interior columns-Answer

the settlement of interior columns will be more than exterior columns

.
44. To minimize the effect of differential settlement, the area of footing should be designed for

.
45. A reduction factor Cr, load carrying capacity of a long columns is given by

Cr = 1 - Le/48b

Cr = 1.25 - Le/48b

Cr = 1.5 - Le/48b

.
46. Normally pre-stressing wires are arranged in the

upper part of the beam

lower part of the beam

centre

anywhere

.
47. The shear stress intensity changes from the centre to the surface of the shaft with

uniform rate

remains same

all the above

.
48. The formula T/J = NO/L = fs/r when applied to torsion of closely coiled helical spring, the value of J will be calculated with

mean diameter of the coil D

the diameter of wire of spring-Answer

mean of D and d

(2D + d)3

.
49. The shear stress intensity is minimum at

surface of the shaft

any inside layer of shaft

all the above

.
50. A steel member which is subjected to primary tension is called

Tie or beam

Strut

Sling

.
51. Sliding failure occurs in a solid gravity dam when

Resultant of all forces cuts the base of the dam outside

Resultant of all force cuts the base of the inner middle third point

Ratio of overturning moments exceeds one

Shear friction factor is less than 1.5-Answer

.
52. Mean velocity of flow in a river can be directly measured by means of

Boats

Dams

Surface floats

.
53. The formula used to calculate maximum flood discharge for deccan catchments is

Dicken's formula

Ryve's formula

Ingli's formula

.
54. Direct run off is the sum of

Surface run off and mass flow-Answer

Base flow and ground water run off

Deployed sub surface run off and deep percolation

Surface run off and interflow

.
55. A fluid is a substance that

always expands until it fills any container

is parctically incompressible

cannot remain at rest under the action of a shear force-Answer

cannot be subjected to shear forces

.
56. In Sutro weir the discharge is proportional to

H^1/2

H^3/2

H^5/2

.
57. Which of the following has highest coefficient of discharge

Sharp edged orifice

Borda's mouth piece running free

Cippoletti weir

.
58. ML^-1 T-2 is the dimension of

Force

Energy

Power

.
59. Cavitation is caused by

high velocity

low barometric pressure

high pressure

.
60. Number of rivets required in a joint is

.
61. The point of contraflexure occurs in

cantilever beams only

continuous beams only

all types of beams

.
62. According to Unwin's formula, if t is thickness of the plate in mm, the nominal diameter of the rivet is

d = 1.91 t

d = 1.91 t^2

d = 1.91 St^3

.
63. The slenderness ratio of a column is zero when its length

is zero

is equal to its radius of gyration

is supported on all sides throughout its length

is between the points of zero moments-Answer

.
64 According to IS; 800-lacing bars resists transverse shear equal to

.
65. When the length of tension member is too long

a wire is used

a rod is used

a single angle is used

.
66. A major beam on a building structure, is known as

a girder

a floor beam

a main beam

.
67 For simply supported beams, the maximum permitted deflection is

1/350 of the span

1/375 of the span

1/400 of the span

.
68. In case of cantilever beams the ratio of span to the depth should not exceed

4

8

16

.
69. In a fillet weld placed on the sides of the base, the metal experiences

shear

tension

compression

.
70. Steel is efficiently used in

over reinforced section

under and over reinforced section

none of the above

.
71. The maximum area of tension reinforcement in a beam is

4.5% of bD

5% of bD

5.5% of bD

.
72. The large moment of resistance of T-beam section is due to

width of rib

amount of steel

composite action between the flanges and the rib-Answer

depth of rib

.
73. If in any given pane, one end of a column is unrestrained, its unsupported length l, shall not exceed

120 b^2 /D

125 b^2 /D

140 b^2 /D

.
74. The diameter of lateral ties in a column shall not be less than

6 mm

8 mm

10 mm

.
75 The bending moment at a section of a beam is given by wx^3/6 then the expression for the rate of loading is

wx^4 /24

wx

w

.
76. The torque produced in a circular shaft rotating at 100 r.p.m. to produce 1 h.p. is _____ Kgcm

816.2

916.2

616.2

.
77. The weight of foundation may be assumed to be

.
78  In a continuous footing the area of longitudinal reinforcement required in the direction of wall is

0.2%

0.5%

0.4%

.
79. The net upward pressure on footing p is given by

W + W1/W.q.

W - W1/W.q.

W.q./W - W1

.
80. Partial safety factor m for steel in limit state design is

0.5

1.0

1.5

.
81. The design strength of materials Fs is given by

1.1 f/Rm

f

0.9f

.
82. The pre-stressed concrete induces artificially _____ stress in a structure before it is loaded

compressive

tensile

shear

.
83. According to IS code the total amount of shrinkage for a post tensioned member is taken as

2 x 10^4 / log10 (T+2)

3 x 10^-4 / log10 (T+3)

3 x 10^-3 / log10 (T+3)

2 x 10^-3 / log10 (T+3)-Answer

.
84  The state at which tendon force is released permanently on the concrete is called

Transfer

Anchoring

Post-tensioning

.
85. In a thin cylindrical shell if F1 is the hoop stress and F2 is the longitudinal stress induced, maximum shear stress at any point of the material is given by

F1 - F2 / 2

F1F2 / 2

2F1 / F2

.
86. A beam is fixed at one end and is supported at the other end to the level of the fixed end by means of a rigid prop. At the propped end, for any applied load

the flexural moment as well as deflection is zero

the slope as well as the deflection is zero

the slope as well as the flexural moment is zero

.
87. The thickness of lacing bar used in steel ties should not be less than

6 mm

B/40

L/40

.
88. Mohr's theorem I gives _____ between two tangents on the elastic line of beams

Slope

Deflection

S.F.

.
89. IS code of practice for steel is

456

546

none

.
90. Select cash/commercial crop from the following

Maize

Wheat

.
100. Canal lining

Increases water logging area

Does not affect water logging area

Maintains constant water logging area

.
101. The diameter of transverse reinforcement of columns should be equal to 1/4 of the diameter of the main steel rods but not less than

4 mm

5 mm

6 mm