TEST BOOKLET

DO NOT OPEN THIS TEST BOOKLET UNTIL YOU ARE ASKED TO DO SO

Test Booklet Series B Serial No. BAC-31 CIVIL ENGINEERING 905962
Time Allowed: 2 Hours Maximum Marks: 300

INSTRucnONS TO CANDIDATE
1.
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S. This Test Booklet contains 120 items (questions). Each item comprises four responses (answers). You will select the response which you want to mark on the Answer Sheet. In case you feel that there is more than one correct response, mark the response which you consider the best. In any case, choose ONLY ONE response for each item.
6.
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7.
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IDO NOT OPEN mIS BOOKLET UNTIL YOU ARE ASKED TO DO SO I
1. A steep flow curve indicates soil of

low shear strength high shear wength


low compressibility low penneability


2. A flat grain size distribution curve shows a

narrow range of grain sizes.


wide range of grain sizes.


unifonn grain sizes.


certain range of missing grain sizes.


3. Which of the following describes a soil compacted dry of optimum relative to the same soil compacted wet of optimum?

Dispersed structure, higher strength, higher swelling.·


Flocculated structure, higher strength, lower swelling:


Dispersed structure, lower strength, less penneability.


Higher penneability, higher strength, higher swelling.


4. The value of compression index for a remoulded sample whose liquid limit is 40% is
c

0.21 0.28


0.021 0.028


5. The only stress of Boussinesq suitable for computation of stress in soils is

vertical stress horizontal stress


tangential stress shear stress


6. For piping phenomenon to occur in soils the most important condition to be satisfied is that

.

specific gravity of soil solids is more than 2.8.


void ratio is more than 2.0.


hydraulic gradient is nearly unity.


soil is fine grained.


7. For stability analysis of an earth dam for steady seepage case, the most appropriate test would be the

unconsolidated undrained test consolidated undrained test


unconsolidated drained test consolidated drained test


8. Negative skin friction on a pile

acts downward and decreases the load carrying capacity of the pile.


acts downward and increases the load carrying capacity of the pile.


acts upward and decreases the load carrying capacity of the pile.


acts upward and increases the load carrying capacity of the pile.


Serles-B 2 BAC·31
9. A nonnally consolidated clay settled 10 mm when effective;: stress was increased from 50
kN/m2. If the effective stre'ss is further increased from 100 kN/m2, then further settlement of the clay shall be
10 rom 20 rom
30mm 40mm
10. The correct increasing order of specific surface i.e. surface area per mass of the given soils is

silt, sand, colloids, clay sand, silt, colloids, clay


sand, silt, clay, colloids clay, silt, sand, colloids


11. For stability analysis of an earth dam for steady seepage case, the most appropriate test

unconsolidated undrained test consolidated undrained test


unconsolidated drained test consolidated drained test


12. While designing the abutments of a bridge, the lateral earth pressure to be considered is

active earth pressure.


earth pressure at rest with value of Kofor loose back fill.


earth pressure at rest with value of Kofor dense back fill.


none of them.


13. The rise of water table below the foundation influences the bearing capacity of soil mainly by reducing

cohesion and effective unit weight of soil.


cohesion and effective unit weight of soil.


effective unit weight of soil and effective angle of shearing resistance.


effective angle of shearing resistance.


14. Newton's law of viscosity is given by the relation du
2

1"=Wdy
du



Il dy 1" (Il)312


15. Surface tension is expressed in
N/m N/m2
N2/m N/m3
16. Gauge pressure is defined as

pressure measured with respect to atmospheric pressure.


pressure measured from zero pressure.


absolute pressure plus atmospheric pressure.


pressure given by a gauge.


17. The pressure intensity at a point in water is given by 49.05 kN/m2. The depth to that point below surface is
0.198 m 481.2 m
5 m 10m
BAC·31 3 Series.B
18. The total pressure an a vertical plate 2 m wide and 4 m depth when held normal to the free surface in water with its one width on the free surface is

16 kN 16,000 kN


78.48 kN 32 kN


19. A submerged body is supposed to be in stable equilibrium when

center of buoyancy coincides width concrete of gravity.


center of gravity lies above center of buoyancy.


center of buoyancy lies above center of gravity.


when buoyant forces is less than the gravitational force.


20. If the position of metacentre M lies below e.g. of the floating body the body will remain in a state of

stable equilibrium unstable equilibrium


neutral equilibrium none of the above


21. The type of flow in which the velocity at any given time does not change with respect to space is called

steady flow unsteady flow


rotational flow uniform flow


22. The path followed by a fluid particle in motion is called a

stream line path line


streak line equipotential line


23. In fluid mechanics, the continuity equation is a mathematical statement embodying the principle of

conservation of momentum conservation of mass


conservation of energy none of the above


24. is defined as a scalar function of space and time such that its negative derivative with respect to any direction gives the fluid velocity in that direction.

velocity potential function stream function


circulation vorticity


25. The streamlines and equipotential lines are

normal to each other


parallel to each other


always intersecting at acute angles


lie one over the other


26. A stagnation point in a fluid flow is a point at which

pressure is zero total energy is zero


pressure and velocity are zero velocity is zero


27. A stream function is given by =Xl y.. The velocity component in the x direction at appoint will be

6


...[4iJ


Series-B 4 BAC·31
28. Euler's equation (in differential form) is written as
v2·dv g·dz v ·dv g·dz
p p
v ·dv +g2·dz v2·dv g·dz
p p
29. The piezometric head is the summation of

velocity head and pressure head.


pressure head and elevation head.


velocity head and elevation head.


total head.


30. A Venturimeter is used for measuring

pressure. piezometric head.


total energy. flow rate.


31. Dynamic similarity between the model and prototype is the

similarity of motion. similarity of lengths.


similarity of forces. similarity of flow.


32. The boundary layer separation occurs when
0
dx ay y

ay y=o ay y=o

33. Loss of head due to sudden enlargement is given as (VI-Vi (VI-Vi
2g 2g
VVt-V2
2g 2g
Where Vt and V2 are respectively velocities before and after the enlargement and g is the
acceleration due to gravity.
34. In a laminar flow, Reynolds number is

less than 4000.


more than 2000.


more than 2000 but less than 4000.


less than 2000.


35. The main function of a surge tank is

to tegulate the flow in penstock.


to increase the storage capacity of the reservoir.


to absorb water hammer pressures.


to create water hammer action.


BAC-31 5 Serles·B
36. When the depth of flow changes abruptly over a short distance in a free surface flow, the flow is known as

uniform flow spatially varied flow


gradually varied flow rapidly varied flow


37. For flow in open channels, uniform flow is characterized by

a constant slope of channel bottom.
a constant depth of flow.



a changing depth of flow.


none ofthe above.


38. The hydraulic mean depth is gi ven by p p2

AA
A


p

39. For the best rectangular section

b/3 y=b


b/2


40. The hydraulic jump occurs when

the bed slope is steep.


the flow changes from super critical to sub critical.


the flow changes from sukritical to super critical.


the flow is critical.


41. Cipolletti weir is a trapezoidal weir having side slope of

1 horizontal to 2 vertical 4 horizontal to I vertical


1 horizontal to 4 vertical 1 horizontal to 3 vertical


42. The surface profile lying in zone 1 of a channel with mild slope is called

C1 profi Ie draw down


M2 profile profile


43. A surge with an advancing front moving in the upstream direction with increased depth is called a

hydraulic bore negative surge


positive surge hydraulic jump


44. The present population of a community is 28000 with an average water demand of 150 lped. The existing water treatment plant has a design capacity of 6000 m3/d. It is expected that the population will increase to 44000 during the next 20 years. The number of years
from now when the plant will reach its design capacity, assuming an arithmetic rate of population growth, will be

5.5 years 8.6 years


15.0 years 16.5 years


Serl..·B 6 BAC-3!
45. Water samples I and S2) from two different sources were collected for the measurement
of dissolved oxygen using modified Winkler method. Samples were transferred to 300 mL BOD bottles. 2 mL of MnS04 solution and 2 mL of were added to each bottle containing the sample and mixed. Sample S I developed a white precipitate, whereas sample S2 developed a brown precipitate. In reference to these observations, the correct statement is

Both the samples were devoid of DO


Sample Sj was devoid of DO while sample S2 contained DO


Sample Sj contained DO while sample S2 was devoid of DO


Both the samples contained DO


46. The turbidity of surface water is measured with the help of a turbidity meter -an instrument measuring the intensity of light scattered by suspended material present in water. The turbidity value so obtained is expressed in the units of
CFU FTU
lTV NTV
47. Hardness of water is measured by titration with ethylene-di-amine-tetra-acetic acid (EDTA) method using

Eriochrome black T indicator


Ferroin indicator


Methyl orange indicator


Phenolphthalein indicator


48. The design parameter of a flocculation unit is given by a dimensionless number Gt, where G is the velocity gradient and t is the detention time. Values of Gt ranging from 104 to 105 are commonly used, with t ranging from 10 to 30 minutes. The most preferred combination of G and t to produce smaller and denser flocs is

large G values with short t large G values with long t


small G values with short t small G values with long t


49. Particles whose surface properties are such that they aggregate, or coalesce, with other particles upon contact, thus changing' size, shape and perhaps specific gravity with each contact, are called

colloidal particles discrete particles


flocculating particles suspended particles


50. Two particles are released in water at the same time. Particle A has a diameter dA of 0.45 mm. Particle B has a diameter dB of 0.90 mm. Assuming equal densities for both the particles and laminar flow conditions, the ratio of the terminal settling velocity of particle A
to that of particle B will be

4.00 2.00


0.50 0.25 BAC-31 7 Series·R


51. Assertion A discrete particle (having diameter do) settling in a circular sedimentation
tank follows a parabolic path. Reason The downward settling velocity of the discrete particle (having
odiameter do) in the circular sedimentation tan"k do not change with time.
Codes

Both and are true and is the correct explanation of


Both and are true but is NOT a correct explanation of


is true, but is false.


is false, but is true.


52. Assertion A small quantity of ammonia is added to water before carrying out disinfection using chlorine.
Reason Chloramines are persistent disinfectant, which provides continued protection against regrowth of microorganisms in the water distribution system.
Codes:

Both and are true and is the correct explanation of


Both and are true but is NOT a correct explanation of


is true, but is false.


is false, but is true.


53. Match List-I (Equation/method) with List-II (Application) and select the correct answer using the codes given below the lists:
L1st-I List-II (EquationlMethod) (Application)
A. Manning's Equation 1. Frictional head loss estimation in pipe flow
B. Darcy-Weisbach Equation 2. Domestic sewer design
C. Hardy Cross Method 3. Storm water sewer design
D. Rational Method 4. Water distribution system design
Codes:
A B C D


2 1 4 3


1 4 32
43 2 1



4 1 2
Serles·B 8 BAC·3!
54. Assertion Inverted siphons nonnally include multiple pipes and an entrance structure designed to divide the sewage flow among them so that the velocity (at least 0.9 mls) in those pipes in use will be adequate to prevent deposition of solids.
Reason A single pipe of smaller diameter may be enough to maintain the required velocity at the minimum flow, but the velocity at peak flow will produce very high head losses leading to damage of the pipe itself.
Codes:

Both and are true and is the correct explanation of


Both and are true but is NOT a correct explanation of


is trile, but is false.


is false, but is true.


55. A combined sewerage system is designed to carry

domestic sewage and industrial wastewaters together.


stonn water and domestic sewage together.


industrial wastewaters and stonn water together.


domestic sewage only.


56. In a circular sewer of diameter if the wetted perimeter is the depth of flow will be equal to

0.25 D 0.50 D


0.75 D 1.00 D


57. 3 mL of wastewater containing no dissolved oxygen is mixed with 297 mL of dilution wate( containing 8.6 mgIL of dissolved oxygen in a 300 mL BOD bottle. After a 5-day incubation at 20 DC, the dissolved oxygen content of the mixture is 5.4 mgIL. The BODs of the
wastewater is

317mgIL 320mgIL


950 mgIL 960 mgIL


58. An analysis for determination of solids in the domestic sewage was carried out as follows:

A crucible was dried to a constant mass of 62.485 g.


50 mL of a well-mixed sample was taken in the crucible.


The crucible with the sample was dried to a constant mass of 65.020 g in drying oven at 104 DC.


The crucible with the dried sample was placed in a muffle furnace at 600 °C for an hour. After cooling, the mass of the crucible with residues was 63.145 g. The concentration of organic fraction of solids present in the sewage sample is


13200 mgIL 33800 mgIL


37500 mgIL 50700 mgIL


HAC-31 9 Series-H
59. Chemical Oxygen Demand of a wastewater containing organic matters is estimated by dichromate method titrating with ferrous ammonium sulphate solution using

Eriochrome black T indicator Ferroin indicator


Methyl orange indicator Phenolphthalein indicator


60. It is important to control and maintain the horizontal velocity at approximately 0.3 mls in a channel type horizontal-flow grit chamber irrespective of variations in flow rate through the chamber. The controlled horizontal velocity is achieved by providing a velocity control section at the end of the channel. The shape of velocity control section is dependent on the section of the channel. If the channel is made of a rectangular section, the velocity control section should be

a sharp-crested weir an inboard weir


a proportioning weir an ogee weir


61. Activated sludge process is designed for operation in

endogenous growth phase of microorganism.


lag growth phase of


log growth phase of microorganism.


stationary growth phase of microorganism.


62. Match List-I (Terms) with List-II (Definitions) and select the correct answer using the codes given below the lists
List-I List-II (Terms) (Definitions)
A. Concentrated Suspension 1. Whose size, shape and specific gravity do not change with time.
B. Flocculating Particles 2. Concentration of particles is not sufficient to cause significant displacement of water as they settle.
C. Dilute Suspension 3. Whose surface properties are such that they aggregate or coalesce with other particles upon contact.
D. Discrete Particles 4. Particles are close enough togelher so that their velocity field overlaps with those of neighbouring particles.
Codes
AB C D

2 1 43
2 1
4 1
4 1 23
Series·B 10 BAC·31
63. Assertion A sewage lagoon is a suspended-culture biological system consisting of a large, shallow earthen basin in which sewage is retained long enough for natural purification processes to provide the necessary degree of treatment.
Reason The natural purification occurs in the presence of oxygen, which is largely provided by artificial aeration. Codes:

Both and are true and is the correct explanation of


Both and are true but is NOT a correct explanation of


is true, but is false.


is false, but is true.


64. The highest power-to-weight .ratio amongst the following vehicles:

Car Truck


Motorcycle Bicycle


65.· The standard lane width in multi-lane roads as per IRC in highways

3.6 m 5.75 m


7.0m 3.5m


66. .Extra widening on the horizontal curves is provided for

Accommodating off..,.tracking.


To counter various forces at sharp turns.


For extra safety.


None of these.


67. The stopping sight distance (270 in a sag vertical curve (with tangent slopes and
is greater than the curve length. The curve length when the rest other factors are taken as per IRC standard, is 00 00
175 m None of these
68. In a flexible pavement the layer below the top surface is

Sub-grade Sub-base


Base None of these


69. Bitumen is obtained from

Destructive distillation of coke


Distillation of petroleum


Fractional distillation of petroleum


Mixing solvents in tar


70. In a flexible pavement, the following four materials with the CBR values given are available 15% and 4%. Indicate the order (top to bottom) in which the materials are to be placed for making a good pavement

80%


15%


BAC-31 11 Serles-B
71. Ideally a pennanent way comprises of

rails, sleepers, ballast cushion and sub ballast murum.


rails, sleepers and ballast cushion.


rails, sleepers, ballast cushion and sub grade.


rails, sleepers, sub ballast murum and subgrade.


72. The gauge widths (in for broad, standard and narrow gauges respectively are

1.767, 1.650,0.760 1.676,1.500,0.676


1.676, 1.435,0.762 1.876,1.656,0.800


73. The gauge width (in for a metre gauge

0.760 1.00


1.656 None ofthese


74. The number of crossing indicates the

number of rails that criss-cross a joint.


angle between main rail and crossing rail.


number of sleepers all through the crossing.


number of sleepers all through the crossing plus a number depending on the connecting rail length.


75. In a broad gauge track with 1 in 8 turnout the curve lead (in is

17.00 34.00


14.25 28.49


76. The component in the airport system where the aircrafts land/take off

Apron Taxiway


Runway None of these


77. The external aid for en route overwater navigation of aircraft

Doppler navigation Inertial Navigation


Celestial navigation Long range navigation


78. A circuitlloop in a construction network represents

cyclic pattern of activities illogical interpretation of activities


Routine maintenance activities None of these


79. A dummy activity is introduced to

for getting logical dependencies


make the network diagram look elegant


make network efficient


None of these


Series·B 12 BAC·31
80. A critical path is essentially used to find.". of a project

total float interfering float


free float completion time'


81. Critical Activities are those that have

zero float time infinite floattime


small but negligible float time none of these



82. Program evaluation and review technique assumes that activity completion times are


deterministic time dependent


Probabilistic Fuzzy


83. For building a culvert across a road, the optimistic, pessimistic and most likely times for completion were given as days respectively. The mean or expected value and variance time (in the same order) of completion of this activity in days are

5,4 5.17,0.25


5.33,4 5.33,0.50


84. Economy of scale exists when

Fixed and variable costs are nearly equal.


Fixed costs are high compared to variable costs.


Fixed costs are low compared to variable costs.


No specific relation between fixed and variable costs.


85. The worth of an infrastructural asset changes with time due to

inflation/deflation utility it provides


Both and None of these


86. The present worth of Rs. 100 cr asset valued 2 years ahead, with an annual interest rate of
10% Rs. 121.00 cr Rs. 82.64 cr

Rs. 100 cr Rs. 110 cr
87. Variable costs refer to

cost incurred for use/operation.


fixed expenses irrespective of use/operation.


costs that vary with time.


none of these.


BAC·31 13 Serles·B
88. ·The base unit of length, mass and time in International system of units are

metre, kilonewton and second


metre, kilogram and minute


metre, kilogram and second


milimetre, Newton and second


89. Varignon's theorem of moments states

arithmetical sum of the moments of two forces about any point, is equal to the moments of their resultant about that point.


arithmetical sum of the moments of the forces about any point in their plane, is equal to the moment of their resultant about that point.


algebraic sum of the moments of the forces about any point in their plane, is equal to the moment of their resultant about that point


algebraic sum of the moments of two forces about any point, is equal to the moment of their resultant about that point.


90. A force of 800 N acts on a bracket as shown in Fig. Q. 3. The moment of the force about B is equal to
BOON
A
T 60°

160mm
1

Fig. Q. 3

203 N-m 230N-m


302N-m 320N-m


91. Three loads are applied to the beam as shown in Fig. Q. 4. Neglecting the weight of the
beam, the vertical reactions at A and B are 75kN 30kN kN
AB
.,fl.S..f-3.0m +lm 1m
30 kN and 105 kN 105 kN and 30 kN Fig. Q. 4 35 kN and 100 kN 100 kN and 30 kN

14 BAC·31

92. A 2Q-Mgrail road car moving at a speed of 0.50 mls to the right collides with a 35-Mg car which is at rest. If after collision the 35-Mg car is observed to move to the right at a speed of 0.30 mis, then the co-efficient of restitution between the two car is

0.56 0.65


0.55 0.66



93. The mass moment of inertia of a slender roof and mass with respect to axis
perpendicular to the rod and passing through one end of the rod is
ml2/4 m2l/3
mP/3 m2P/3
94. In portal frame with columns of same height and section having fixed base, the sum of the displacement factors of column in Kani's method is
-2.0 -1.5
-1.0 -D.5
95. Match List-I with List-II and select the correct answer using codes given below:
Llst-I List-II
Type of beam with loading Maximum support moment
w/m A 5 wl2 1 96
w B 11 wl2 2 192
3 wl2 12
w/m JD wP 4 20

Codes A B C D
4 4 3 3 3 1 4 4 1 2 1 2 2 3 2 1
BAC·31 IS Series-B

96. Match List-I with List-II and select the correct answer using given codes:
List-I List-II
Type of section on which shear force acting Maximum shear stress across the section 3v I bd
....... 01A
2 9v 4 d2
SkID 3 16 v 31U1i 4 3v 2bd

Codes:
A B C D
I 4 3 2
4 2 I 3
I 2 3 4
4 3 I 2

97. The cantilever beam AB with loading is shown in Fig.Q. 10. The deflection at the free end will be zero, if the value of R is

A
t J:

I
Fig. Q.I0 12w 8w
32
32 15 w lOw

32 32
Serles-B 16 BAC-31
98. The movable bracket shown in Fig. Q. 11 may be placed at any height on the 60 mm diameter pipe. If the coefficient of static friction between the pipe and bracket is 0.25, then minimum distance x at which the load W can be supported (neglecting the weight of bracket) is


60mm
Fig. Q. 11

200 mm 240 mID


250 mm 220mm


99. A pin-jointed simple truss is shown in Fig. Q. 12. In which the zero force members are BC

Fig. Q. 12

AB, BC, CD and DE BC, CD, DE and BE


AB, BC, CD and AE AB, CD, BD and DE


100. The flexibility matrix of the cantilever shown in Fig. Q. 13 is
Pit EI-Constant
Ie I
rI
Fig. Q. 13
2
1 1
[31 21] [212 31

6EI 2z2 6 6EI 31 6 1
[31 I 31

6EI 31 212 6EI 31 212
BAC·31 17 Serles·B
101. Which of the following structures will experience sway? Select the correct answer from the given codes
w/m w/m
31
21 I 21
II



112

112

w
21
II I
I
j


Codes:

1and2 2and3


1 and 4 2and4


102. A motorist in travelling on a curved section of highway of radius 750 m at a speed of 100 kmIh. The motorist suddenly applies the brakes. If after 8 second, the speed has been reduced to 75 kmIh, then the acceleration of the automobile immediately after the brakes have been applied is

1.351 m1s2 1.135 m1s2


1.531 m1s2 1.315 m1s2


103. A three hinged parabolic arch with hinged supports at the same level and third hinge at the central rise is subjected to uniformly distributed load of w/m throughout its horizontal span, The moment and horizontal thrust at quarter span are respectively
wPwP wP wP
Sand 8h 8h and S
w12 w/2 wP
8h and 8h 0 and 8h
104. In a simply supported beam subjected to the action of a train of moving loads, the bending moment at a given section maximizes when


the total load acting on the portion of the beam left to the section is equal to that acting on the portion of the right to the section.


the average load acting on the portion of the beam left to the section is equal to that acting on the portion of the beam right to the section.


the section and the C.G. of the load system are equidistant from the center of the span.


the section and the center of the span are equidistant from the C.G. of the load system.


Series-B 18 BAC-31
105. Match List-I with List-II and select the correct answer using codes as given below:
List-I List-II
Type of beam with type of loading B.M. diagram
B f t 2 V
C 3
D 4

Codes AB C D
24 3 1

3 4 12


42 3 1


2 3 41
106. The ratio of maximum deflection of beam to maximum deflection of beam as shown in Fig. Q. 19 is
w/m aaaa; aaaa


w/m taoooooooot
2 5 I Fig. Q. 19 3 7
107. The bending moment of the conjugate beam has the corresponding real beam known as slope shear force bending moment deflection same value of the function of
BAC·31 19 Serles·B

t

108. The conjugate beam for the real beam shown in Fig. Q. 21 is
.. JJO; JJO
hinge . Fig. Q. 21

JJO 0 JJO
0
109. The ordinates of the influence line for support moment of a cantilever beam of length at free end and support a,re

and respectively zero and zero respectively


zero and respectively none of the above


110. The ratio of shear stress and shear strain of an elastic material is termed as

Modulus of Rigidity Young's Modulus


Modulus of Elasticity None of the above


111. Match List-I with the List-II and select the correct answer using given codes:
List-I List-II
(Euler's Formula) (End conditions of long column)

1. One end fixed other end free
A


n2 EI 2. Both ends fixed
B 4i2
3. Both ends hinged
C

4. One end fixed, other end hinged
D

Codes
A B C D

4 1 32
3 1 24
3 1
4 21
112. The magnitude of the concentrated load to be applied at the free end B of a cantilever beam show in Fig. Q. 25 to produce deflection at that point is
Aj BI

Fig. Q. 25
4EI 3EI!1
P

2EI/13EI

T
Series·B 20 BAC·31

113. A portal frame is shown in Fig. Q. 26. The deflected shape of the frame for constant EI will be as per
T
I
I
1
Fig. Q. 26






......

114. Match List-I with List-IT and choose the correct answer from given codes:
List-I
A Maximum/minimum principal stress I.
reaches the elastic limit stress in simple
tension/compression.
B Maximum/minimum principal strain 2.
equal to the maximum I minimum
strain at the elastic limit in simple
tension/compression
C Maximum shear stress must equal the 3.
maximum shear stress at elastic limit in
simple tension.
D Strain energy per unit volume in it 4.
equals the maximum strain energy per
I I ....I unit in the material at elastic limit in simple tension.
Codes:
A B C D
2 3 4 1
4 3 2 I
I 2 4 3
3 2 1 4
BAC·31 21

List-D Coulomb guest's theory of elastic failure. St. Venant's theory of elastic failure.
Rankine's theory of elastic failure.
Haigh's theory of elastic failure
Serle.·B
l1S. For the given S.F. and B.M. diagrams as shown in Fig. Q. 28, the appropriate beam with loading is as in

4

II I4



.., lagram


wt I

B.M.Diagram
Fig. Q. 28.


I J


WE

116. The inherent property of a body which offers reluctance to change its state of rest or uniform motion, is

momentum inertia


mass weight


117. Knowing M, F and Y are the bending moment, moment of inertia, radius of curvature, modulus of elasticity, stress and depth of neutral axis at a section in flexure, the MEY MRF
00 T=R=F W
I RF MEEF

M=E=Y T Y
l1S. A grading curve is

the results of a sieve analysis.


a plot of mass retained in each sieve against particle size.


the plot of cumulative fraction smaller than a given size against the logarithm of that size.


none of the above.


119. Aeolian soil is a

soil occurring in flood plain glacial clayey soil


soil deposited in lake wind-borne soil


120. A soil sample has a shrinkage limit of 10% and specific gravity of soil solids as 2.7.The porosity of the soil at shrinkage limit is

21.2% 27.0%


73.0% 78.8%


Serles·B 22 BAC·31
Space For Rough Work

BAC·31 23 Series·B