GATE-200 1
CE : CIVIL ENGINEERING
SECTION A
(75 Marks)
CE.l. This question consists of TWENTY FIVE
sub-questions (1.1-1.25) of ONE mark each. For each of these sub-questions
four possible answers (A, B, C and D) are given, out of which only one is
correct.
Answer each sub-question by darkening the appropriate bubble on the
OBJECTIVE RESPONSE SHEET (ORS) using a soft HB pencil. Do not use the ORS
for any rough work. You may use the Answer Book for any rough work, if
needed. (25 x 1 = 25)
1.1. The number of boundary conditions required to solve
the following differential equation is
(a) 2 (c) 4
(b) 0 (d) 1
1.2. The value of the integral is I =
(a)
(b)
(c)
(d)
1.3. The limit of the following series as x approaches
is
(a)
(b)
(c)
(d) 1
1.4. The degree of static indeterminacy, N s� and the
degree of kinematic indeterminacy, N k� for the plane frame shown below,
assuming axial deformations to be negligible, are given by
(a) N s = 6 and N k = 11
(b) N s = 6 and N k = 6
(c) N s = 4 and N k = 6
(d) N s = 4 and N k = 4
1.5. The bending moment (in kNm units) at the mid-span
location X in the beam with overhangs shown below-is equal to:
(a) 0
(b) - 1 0
(c) - 15
(d) -20
1.6. Identify the FALSE statement from the following,
pertaining to the effects due to a temperature rise D T in the bar BD alone
in the plane truss shown below:
(a) No reactions develop at supports A and D.
(b) The bar BD will be subject to a tensile force.
(c) The bar AC will be subject to a compressive force.
(d) The bar BC will be subject to a tensile force.
1.7. Identify the correct deflection diagram corresponding
to the loading in the plane frame shown below:
1.8. Identify the FALSE statement from the following,
pertaining to the methods of structural analysis:
- Influence lines for stress resultants in beams can be
drawn using Miller Breslau's Principle.
- The Moment Distribution Method is a force method of
analysis, not a displacement method.
- The Principle of Virtual Displacements can be used to
establish a condition of equilibrium. .
- The Substitute Frame Method is not applicable to
frames subject to significant sideway.
1.9. Identify the FALSE statement from the following,
pertaining to the design of concrete structures:
- The assumption of a linear strain profile in flexure
is made use of in working stress design, but not in ultimate limit state
design.
- Torsional reinforcement is not required to be
provided at the coners of simply supported rectangular slabs, if the
coners are free to lift up.
- A rectangular slab, whose length exceeds twice its
width, always behaves as a two-way slab, regardless of the support
conditions.
- The 'load balancing' concept can be applied to select
the appropriate tendon profile in a prestressed concrete beam subject to
a given pattern of loads.
1.10. Identify the most efficient butt joint (with double
cover plates) for a plate in tension from the patterns (plan views) shown
below, each comprising 6 identical bolts with the same pitch and gauge:
1.11. The following two statements are made with respect
to different sand samples having the same relative density. Identify if they
are TRUE or FALSE.
I. Poorly graded sands will have lower friction angle than
the well graded sands.
II. The particle size has no influence on the friction
angle of sand.
(a) II is TRUE but I is FALSE (b) Both are FALSE
statements
(c) Both are TRUE statements. (d) I is TRUE but II is
false.
1.12. The following two statements are made with reference
to the calculation of net bearing capacity of a footing in pure clay soil (
f = 0) using Terzaghi's bearing capacity theory. Identify if they are TRUE
or FALSE.
I. Increase in footing width will result in increase in
bearing capacity.
II. Increase in depth of foundation will result in higher
bearing capacity.
(a) Both statements are TRUE (b) Both statements are FALSE
(c) I is TRUE but II is FALSE (d) I is FALSE but II is
TRUE
1.13. The width and depth of a footing are 2 and 1.5 m
respectively. The water table at the site is at a depth of 3 m below the
ground level. The water table correction factor for the calculation of the
bearing capacity of soil is
(a) 0.875 (b) 1.000
(c) 0.925 (d) 0.500
1.14. The void ratio and specific gravity of a soil are
0.65 and 2.72 respectively. The degree of saturation (in percent)
corresponding to water content of 20% is
(a) 65.3 (b) 20.9
(c) 83.7 (d) 54.4
1.15. With respect to a c- f soil in an infinite slope,
identify if the following two statements are TRUE or FALSE.
I. The stable slope angle can be greater than f
II: The factor of safety of the slope does not depend on
the height soil in the slope.
(a) Both statements are FALSE (b) I is TRUE but II is
FALSE
(c) I is FALSE but II is TRUE (d) Both statements are TRUE
1.16. In the Bernoulli equation. used in pipe flow. each
term represents
(a) Energy per unit weight (b) Energy per unit mass
(c) Energy per unit volume (d) Energy per unit flow length
1.17. The stage-discharge relation in a river during the
passage of flood is measured. If q f is the discharge at the stage when
water surface is falling and q r is the discharge at the same stage when
water surface is rising, then
(a) q f= q r (b) q f < q r
(c) q f > q r (d)
= constant for all stages
1.18. lsopleths are lines on a map through points having
equal depth of
(a) Rainfall (b) Infiltration
(c) Evapotranspiration (d) Total runoff
1.19. A linear reservoir is one in which
(a) Storage varies linearly with time
(b) Storage varies linearly with outflow rate
(c) Storage varies linearly with inflow rate
(d) Storage varies linearly with elevation
1.20. Aeration of water is done to remove
(a) Suspended Impurities (b) Colour
(c) Dissolved Salts (d) Dissolved Gases
1.21. The following chemical is used for coagulation.
(a) Ammonium Chloride. (b) Aluminium Chloride.
(c) Aluminium Sulphate. (d) Copper Sulphate.
1.22. The unit in which both sedimentation and digestion
processes of sludge take place simultaneously is
(a) Skimming Tank (b) Imhoff Tank
(c) Detritus Tank (d) Digestion Tank
1.23. The design value of lateral friction coefficient on
highway is
(a) 1.5 (b) 0.50
(c) 0.35 (d) 0.15
1.24. Camber on highway pavement is provided to take care
of
(a) Centrifugal Force. (b) Drainage.
(c) Sight Distance (d) Off-Tracking.
1.25 The minimum value of CBR (%) required for granular
sub-base as per Ministry of Surface Transport (MOST) specification is
(a) 5 (b) 10
(c) 15 (d) 20
CE.2. This question consists of Twenty Five
sub-questions (2.1.-2.25) of TWO marks each. For each of these sub-questions
four possible answers (A, B, C and D) are given, out of which only one is
correct. Answer each sub-question by darkening the appropriate bubble on the
OBJECTIVE RESPONSE SHEET (ORS) using a soft HB pencil. Do not use the ORS
for any rough work. You may use the Answer Book for any rough work, if
needed. (25 x 2 = 50)
2.1. Determinant of the following matrix is
(b) � 28
(c) + 28
(d) + 72
2.2. The inverse Laplace Transform of
is,
(a)
(b)
(c)
(d)
2.3. The solution for the following differential equation
with boundary conditions
y(0) = 2 and y'(1) =- 3 is,
(a)
(b)
(c)
(d)
2.4. The product
[Q] T of the following two matrices
and [Q] is
(a)
(b)
(c)
(d)
2.5. The given values of the matrix
are,
(a) (5.13,9.42) (b) (3.85,2.93)
(c) (9.00,5.00) (d) (10.16,3.84)
2.6. The frame below shows three beam elements OA, OB and
OC, with identical length L and flexural rigidity El, subject to an external
moment M applied at the rigid joint O. The correct set of bending moments {M
OA' M oB' M oc} that develop at O in the three beam elements OA, OB and OC
respectively, is:
El/Lis constant for all three members
(a) {3M/8, M/8, 4M/8} (b) {3M/11, 4M/11, 4M/11}
(c) { M/3, M/3, M/3} (d) {3M/7, 0, 4M/7}
2.7. Identify, from the following, the correct value of
the bending moment M A (in kNm units) at the fixed end A in the statically
determinate beam shown below (with internal hinges at B and D), when a
uniformly distributed load of 10 kN/m is placed on all spans. (Hint:
Sketching the influence line for M A or applying the Principle of Virtual
Displacements makes the solution easy).
(a) -80 (b) -40
(c) 0 (d) + 40
2.8. The end moment (in kNm units) developed in the roof
level beams in the laterally loaded frame shown below (with all columns
having identical cross-sections), according to the Cantilever Method of
simplified analysis, is :
(a) 7.5 (b) 15
(c) 20 (d) 30
2.9. Consider the following two statements related to
reinforced concrete design, and
identify whether they are TRUE or FALSE:
I. Curtailment of bars in the flexural tension zone in
beams reduces the shear strength at the cut-off locations.
II. When a rectangular column section is subject to
biaxially eccentric compression, the neutral axis will be parallel to the
resultant axis of bending.
(a) Both statements I and II are TRUE.
(b) Statement I is TRUE, and statement II is FALSE.
(c) Statement I is FALSE, and statement II is TRUE.
(d) Both statements I and II are FALSE.
2.10. Consider the following two statements related to
structural steel design, and identify whether they are TRUE or FALSE:
I. The Euler buckling load of a slender steel column
depends on the yield strength of steel.
II. In the design of laced column, the maximum spacing of
the lacing does not depend on the slenderness of column as a whole.
(a) Both statements I and II are TRUE.
(b) Statement I is TRUE, and statement II is FALSE.
(c) Statement I is FALSE, and statement II is TRUE.
(d) Both statements I and II are FALSE.
2.11. Identify the two FALSE statements from the following
four statements.
I. The consolidation of soil happens due to the change in
total stress.
II. When Standard Penetration Tests are performed in fine
sands below the water table, the dilation correction is applied after the
overburden correction is applied.
III. Over consolidated clays will have predominantly
cohesive strength as compared to the frictional strength.
IV. Compaction of soils is due to expulsion of water.
(a) II & III (b) I & IV
(c) I & III (d) II & IV
2.12. The critical slip circle for a slope is shown below
along with the soil properties.
The length of the arc of the slip circle is 15.6m and the
area of soil within the slip circle is 82 m 2. The radius of the slip
circles is 10.3 m. The factor of safety against the slip circle failure is
nearly equal to,
(a) 1.05 (b) 1.22
(c) 0.78 (d) 1.28
2.13. The coefficients of permeability of a soil in
horizontal and vertical directions are 3.46 and 1.5 m/day respectively. The
base length of a concrete dam resting in this soil is 100 m. When the flow
net is developed for this soil with 1 : 25 scale factor in the vertical
direction, the reduced base length of the dam will be
(a) 2.63 m (b) 4.00 m
(c) 6.08 m (d) 5.43 m
2.14. A plate load test was conducted in sand on a 300 mm
diameter plate. If the plate settlement was 5 mm at a pressure of 100 kPa,
the settlement (in mm) of a 5 m x 8 m rectangular footing at the same
pressure will be
(a) 9.4 (b) 18.6
(c) 12.7 (d) 17.8
2.15. Identify the two TRUE statements from the following
four statements.
I. Negative skin friction is higher on floating piles than
on end bearing piles.
II. All other things being the same in footings on sand,
the footing with smaller
width will have lower settlement at the same net pressure.
III. The void ratio of soils is always less than 1.0.
IV. For determining the depth of embedment of anchored
sheet piles, net moment
at the anchor elevation is set to zero.
(a) I & IV (b) I & III
(c) II & IV (d) II & III
2.16. A 15 cm length of steel rod with relative density of
7.4 is submerged in a two layer fluid. The bottom layer is mercury and the
top layer is water. The height of top surface of the rod above the liquid
interface in 'cm' is
(a) 8.24 (b) 7.82
(c) 7.64 (d) 7.38
2.17. The direct runoff hydrograph of a storm obtained
from a catchment is triangular in shape and has a base period of 80 hours.
The peak flow rate is 30 m 3/sec and catchment area is 86.4 km 2. The
rainfall excess that has resulted the above hydrograph is
(a) 5 cm (b) 8 cm
(c) 10 cm (d) 16 cm
2.18. A field was supplied water from an irrigation tank
at a rate of 120 lit/see to irrigate an area of 2.5 hectares. The duration
of irrigation is 8 hours. It was found that the actual delivery at the
field, which is about 4 km from the tank, was 100 lit/sec. The runoff loss
in the field was estimated as 800 m 3. The application efficiency in this
situation is
(a) 62% (b) 72%
(c) 76% (d) 80%
2.19. A trapezoidal channel with bottom width of 3m and
side slope of IV:1.5H carries a discharge of 8.0 m 3/sec with the flow depth
of 1.5m. The Froude number of the flow is
(a) 0.066 (b) 0.132
(c) 0.265 (d) 0.528
2.20. In a 1/50 model of a spillway, the discharge was
measured to be 0.3 m 3/sec. The
corresponding prototype discharge in m 3/sec is
(a) 2.0 (b). 15.0
(c) 106.0 (d) 5303.0
2.21. If the BOD 5,20 of waste is 150mg/L and the reaction
rate constant (to the base 'e')
at 20�C is 0.35/day, then the ultimate BOD in mg/L is �
(a) 97.5 (b) 181.5
(c) 212.9 (d) 230.5
2.22. The Ca 2+ concentration and Mg 2+ concentration of a
water sample are 160 mg/lit and 40 mg/lit as their ions respectively. The
total hardness of this water sample in terms of CaCO 3 in mg / lit is
approximately equal to
(a) 120 (b) 200
(c) 267 (d) 567
2.23. A town has an existing horizontal flow sedimentation
tank with an overflow rate of 17m 3/day/m 2, and it is desirable to remove
particles that have settling velocity of 0.1mm/sec. Assuming the tank is an
ideal sedimentation tank, the percentage of particles removal is
approximately equal to
(a) 30% (b) 50%
(c) 70% (d) 90%
2.24. A valley curve has a descending gradient of 1 in 40
followed by an ascending� gradient of 1 in 50. The length of the valley
curve required for a design speed of 80 km/hour for comfort condition is
(a) 199 m (b) 116 m
(c) 58 m (d) 37 m
2.25. The radius of relative stiffness for a 20 cm thick
slab with E = 3 x 10 5kg/cm 2 and Poisson's ratio = 0.15, resting on a
subgrade having modulus of 5kg/cm 3 is
(a) 10 cm (b) 80 cm
(c) 120 cm (d) 320 cm
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