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GATE 2016 : Civil Engineering

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GATE 2016 General Aptitude - GA Set-5 Q. 1 Q. 5 carry one mark each. Q.1 Out of the following four sentences, select the most suitable sentence with respect to grammar and usage. (A) I will not leave the place until the minister does not meet me. (B) I will not leave the place until the minister doesn t meet me. (C) I will not leave the place until the minister meet me. (D) I will not leave the place until the minister meets me. Q.2 A rewording of something written or spoken is a ______________. (A) paraphrase Q.3 (B) paradox (C) paradigm (D) paraffin Archimedes said, Give me a lever long enough and a fulcrum on which to place it, and I will move the world. The sentence above is an example of a ___________ statement. (A) figurative (C) literal Q.4 (B) collateral (D) figurine If relftaga means carefree, otaga means careful and fertaga means careless, which of the following could mean aftercare ? (A) zentaga Q.5 (B) tagafer (C) tagazen (D) relffer A cube is built using 64 cubic blocks of side one unit. After it is built, one cubic block is removed from every corner of the cube. The resulting surface area of the body (in square units) after the removal is __________. (A) 56 (B) 64 (C) 72 (D) 96 1/3

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GATE 2016 General Aptitude - GA Set-5 Q. 6 Q. 10 carry two marks each. Q.6 A shaving set company sells 4 different types of razors, Elegance, Smooth, Soft and Executive. Elegance sells at Rs. 48, Smooth at Rs. 63, Soft at Rs. 78 and Executive at Rs. 173 per piece. The table below shows the numbers of each razor sold in each quarter of a year. Quarter \ Product Q1 Q2 Q3 Q4 Elegance 27300 25222 28976 21012 Smooth 20009 19392 22429 18229 Soft 17602 18445 19544 16595 Executive 9999 8942 10234 10109 Which product contributes the greatest fraction to the revenue of the company in that year? (A) Elegance Q.7 (B) Executive (C) Smooth (D) Soft Indian currency notes show the denomination indicated in at least seventeen languages. If this is not an indication of the nation s diversity, nothing else is. Which of the following can be logically inferred from the above sentences? (A) India is a country of exactly seventeen languages. (B) Linguistic pluralism is the only indicator of a nation s diversity. (C) Indian currency notes have sufficient space for all the Indian languages. (D) Linguistic pluralism is strong evidence of India s diversity. Q.8 Consider the following statements relating to the level of poker play of four players P, Q, R and S. I. II. III. IV. P always beats Q R always beats S S loses to P only sometimes R always loses to Q Which of the following can be logically inferred from the above statements? (i) (ii) P is likely to beat all the three other players S is the absolute worst player in the set (A) (i) only Q.9 If f( ) = 2 (A) (x3+8) (B) (ii) only 7 +3 (C) (i) and (ii) (D) neither (i) nor (ii) 5, which of the following is a factor of f(x)? (B) (x-1) (C) (2x-5) (D) (x+1) 2/3

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GATE 2016 Q.10 General Aptitude - GA Set-5 In a process, the number of cycles to failure decreases exponentially with an increase in load. At a load of 80 units, it takes 100 cycles for failure. When the load is halved, it takes 10000 cycles for failure. The load for which the failure will happen in 5000 cycles is ________. (A) 40.00 (B) 46.02 (C) 60.01 (D) 92.02 END OF THE QUESTION PAPER 3/3

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GATE 2016 Civil Engineering Set-1 Q. 1 Q. 25 carry one mark each Q.1 Newton-Raphson method is to be used to find root of equation 3 + sin = 0. If the initial trial value for the root is taken as 0.333, the next approximation for the root would be _________ (note: answer up to three decimal) Q.2 The type of partial differential equation (A) elliptic Q.3 2 2 2 + (B) parabolic 2 2 +3 +2 (C) hyperbolic = 0 is (D) none of these add up to 1, then an eigenvalue of (A) 4 Q.4 If the entries in each column of a square matrix (C) (B) 3 2 is (D) 1 Type II error in hypothesis testing is (A) acceptance of the null hypothesis when it is false and should be rejected (B) rejection of the null hypothesis when it is true and should be accepted (C) rejection of the null hypothesis when it is false and should be rejected (D) acceptance of the null hypothesis when it is true and should be accepted Q.5 [ ] The solution of the partial differential equation (A) C cos(kt ) C1e [ [ (B) Ce kt C1e ( k )x ( k )x [ (C) Ce kt C1 cos ( + C2 e ( ) ) k x ] ) k x k x + C2 sin( k ) x (D) C sin (kt ) C1 cos CE(1) + C2 e ( ( ) ] u 2u = 2 is of the form t x k x + C 2 sin( k ) x ] 1/14

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GATE 2016 Civil Engineering Set-1 Q.6 Consider the plane truss with load P as shown in the figure. Let the horizontal and vertical reactions at the joint B be HB and VB, respectively and VC be the vertical reaction at the joint C. A G L L 60 60 E P F L 60 60 D B L L C Which one of the following sets gives the correct values of VB, HB and VC? (A) VB = 0; HB = 0; VC = P (B) VB = P/2; HB = 0; VC = P/2 (C) VB = P/2; HB = P (sin 60 ); VC = P/2 (D) VB = P; HB = P (cos 60 ); VC = 0 Q.7 In shear design of an RC beam, other than the allowable shear strength of concrete ( c ) , there is also an additional check suggested in IS 456-2000 with respect to the maximum permissible shear stress ( c max ) . The check for c max is required to take care of (A) additional shear resistance from reinforcing steel (B) additional shear stress that comes from accidental loading (C) possibility of failure of concrete by diagonal tension (D) possibility of crushing of concrete by diagonal compression Q.8 The semi-compact section of a laterally unsupported steel beam has an elastic section modulus, plastic section modulus and design bending compressive stress of 500 cm3, 650 cm3 and 200 MPa, respectively. The design flexural capacity (expressed in kNm) of the section is _________ Q.9 Bull's trench kiln is used in the manufacturing of (A) lime Q.10 (C) bricks (D) none of these The compound which is largely responsible for initial setting and early strength gain of Ordinary Portland Cement is (A) C3A CE(1) (B) cement (B) C3S (C) C2S (D) C4AF 2/14

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GATE 2016 Civil Engineering Set-1 Q.17 Pre-cursors to photochemical oxidants are (A) NOX, VOCs and sunlight (B) SO2, CO2 and sunlight (C) H2S, CO and sunlight (D) SO2, NH3 and sunlight Q.18 Crown corrosion in a reinforced concrete sewer is caused by: (A) H2S Q.19 (D) NH3 (B) 29 (C) 31 (D) 32 Match the items in Group I with those in Group II and choose the right combination. P. Q. R. S. Group - I Activated sludge process Rising of sludge Conventional nitrification Biological nitrogen removal (A) P-3, Q-4, R-2, S-1 (C) P-3, Q-2, R-4, S-1 Q.21 (C) CH4 It was decided to construct a fabric filter, using bags of 0.45 m diameter and 7.5 m long, for removing industrial stack gas containing particulates. The expected rate of airflow into the filter is 10 m3/s. If the filtering velocity is 2.0 m/min, the minimum number of bags (rounded to nearest higher integer) required for continuous cleaning operation is (A) 27 Q.20 (B) CO2 1. 2. 3. 4. Group - II Nitrifiers and denitrifiers Autotrophic bacteria Heterotrophic bacteria Denitrifiers (B) P-2, Q-3, R-4, S-1 (D) P-1, Q-4, R-2, S-3 During a forensic investigation of pavement failure, an engineer reconstructed the graphs P, Q, R and S, using partial and damaged old reports. Theoretically plausible correct graphs according to the 'Marshall mixture design output' are (A) P, Q, R Q.22 CE(1) (B) P, Q, S (C) Q, R, S (D) R, S, P In a one-lane one-way homogeneous traffic stream, the observed average headway is 3.0 s. The flow (expressed in vehicles/hr) in this traffic stream is________ 4/14

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GATE 2016 Civil Engineering Set-1 Q.23 The minimum number of satellites needed for a GPS to determine its position precisely is (A) 2 Q.24 (B) 3 (C) 4 (D) 24 The system that uses the Sun as a source of electromagnetic energy and records the naturally radiated and reflected energy from the object is called (A) Geographical Information System (B) Global Positioning System (C) Passive Remote Sensing (D) Active Remote Sensing Q.25 The staff reading taken on a workshop floor using a level is 0.645 m. The inverted staff reading taken to the bottom of a beam is 2.960 m. The reduced level of the floor is 40.500 m. The reduced level (expressed in m) of the bottom of the beam is (A) 44.105 (B) 43.460 (C) 42.815 (D) 41.145 Q. 26 Q. 55 carry two marks each Q.26 Probability density function of a random variable X is given below 5 ( ) = 0.25 if 1 0 otherwise P(X 4) is (A) Q.27 2 1 0 1+ 2 1 2 + (B) 59 6 (B) sin 0 2 (D) 1 8 is (C) 9 1 4 (C) The area of the region bounded by the parabola (A) CE(1) (B) The value of (A) Q.28 3 4 = (C) 3 2 (D) 1 2 10 3 + 1 and the straight line (D) + = 3 is 7 6 5/14

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GATE 2016 Civil Engineering Set-1 Q.29 The magnitudes of vectors P, Q and R are 100 kN, 250 kN and 150 kN, respectively as shown in the figure. Q P 45 90 60 R x The respective values of the magnitude (in kN) and the direction (with respect to the x-axis) of the resultant vector are (A) 290.9 and 96.0 Q.30 (B) 368.1 and 94.7 (C) 330.4 and 118.9 (D) 400.1 and 113.5 The respective expressions for complimentary function and particular integral part of the solution of the differential equation [ d4y d2y + = 108 x 2 are 3 4 2 dx dx ] [ (A) c1 + c2 x + c3 sin 3 x + c4 cos 3 x and 3 x 12 x + c [ ] [ 4 2 (B) c2 x + c3 sin 3 x + c4 cos 3 x and 5 x 12 x + c [ ] [ 4 2 (C) c1 + c3 sin 3 x + c4 cos 3 x and 3 x 12 x + c [ ] 4 [ 2 ] ] ] (D) c1 + c2 x + c3 sin 3 x + c4 cos 3 x and 5 x 12 x + c Q.31 4 2 ] A 3 m long simply supported beam of uniform cross section is subjected to a uniformly distributed load of w = 20 kN/m in the central 1 m as shown in the figure. w = 20 kN/m EI = 30 106 N m2 P 1m 1m Q 1m If the flexural rigidity (EI) of the beam is 30 x 106 N-m2, the maximum slope (expressed in radians) of the deformed beam is (A) 0.681 10-7 CE(1) (B) 0.943 10-7 (C) 4.310 10-7 (D) 5.910 10-7 6/14

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GATE 2016 Civil Engineering Set-1 Q.32 Two beams PQ (fixed at P and with a roller support at Q, as shown in Figure I, which allows vertical movement) and XZ (with a hinge at Y) are shown in the Figures I and II respectively. The spans of PQ and XZ are L and 2L respectively. Both the beams are under the action of uniformly distributed load (W) and have the same flexural stiffness, EI (where, E and I respectively denote modulus of elasticity and moment of inertia about axis of bending). Let the maximum deflection and maximum rotation be max1 and max1, respectively, in the case of beam PQ and the corresponding quantities for the beam XZ be max2 and max2, respectively. w P Q L Figure I w w Hinge X Z Y L L Figure II Which one of the following relationships is true? (A) max1 max2 and max1 max2 (B) max1 = max2 and max1 max2 (C) max1 max2 and max1 = max2 (D) max1 = max2 and max1 = max2 Q.33 A plane truss with applied loads is shown in the figure. 20 kN 10 kN J G 1m K H 10 kN U 1m L V F 1m M E N T 2m S 2m R 2m Q 2m 1m P 2m 2m The members which do not carry any force are (A) FT, TG, HU, MP, PL (C) FT, GS, HU, MP, QL CE(1) (B) ET, GS, UR, VR, QL (D) MP, PL, HU, FT, UR 7/14

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GATE 2016 Civil Engineering Set-1 Q.34 A rigid member ACB is shown in the figure. The member is supported at A and B by pinned and guided roller supports, respectively. A force P acts at C as shown. Let RAh and RBh be the horizontal reactions at supports A and B, respectively, and RAv be the vertical reaction at support A. Selfweight of the member may be ignored. B P 2m C 6m A 1.5 m 1.5 m Which one of the following sets gives the correct magnitudes of RAv, RBh and RAh ? (A) RAv = 0; RBh = 1 2 P; and RAh = P 3 3 1 2 (B) RAv = 0; RBh = P; and RAh = P 3 3 3 1.5 (C) RAv = P; RBh = P; and RAh = P 8 8 1.5 1.5 (D) RAv = P ; RBh = P ; and RAh = P 8 8 Q.35 A reinforced concrete (RC) beam with width of 250 mm and effective depth of 400 mm is reinforced with Fe415 steel. As per the provisions of IS 456-2000, the minimum and maximum amount of tensile reinforcement (expressed in mm2) for the section are, respectively (A) 250 and 3500 (C) 270 and 2000 Q.36 CE(1) (B) 205 and 4000 (D) 300 and 2500 For M25 concrete with creep coefficient of 1.5, the long-term static modulus of elasticity (expressed in MPa) as per the provisions of IS:456-2000 is ________ 8/14

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GATE 2016 Civil Engineering Set-1 Q.37 A propped cantilever of span L carries a vertical concentrated load at the mid-span. If the plastic moment capacity of the section is Mp, the magnitude of the collapse load is (A) Q.38 8M p L (B) 6M p (C) L 4M p (D) L 2M p L Two plates are connected by fillet welds of size 10 mm and subjected to tension, as shown in the figure. The thickness of each plate is 12 mm. The yield stress and the ultimate tensile stress of steel are 250 MPa and 410 MPa, respectively. The welding is done in the workshop ( mw = 1.25). P 100 mm 150 mm P As per the Limit State Method of IS 800: 2007, the minimum length (rounded off to the nearest higher multiple of 5 mm) of each weld to transmit a force P equal to 270 kN (factored) is (A) 90 mm Q.39 (B) 105 mm (C) 110 mm (D) 115 mm The Optimistic Time (O), Most likely Time (M) and Pessimistic Time (P) (in days) of the activities in the critical path are given below in the format O-M-P. E 5-7-10 6-8-11 8-10-14 F G 7-12-18 H I The expected completion time (in days) of the project is _________ Q.40 CE(1) The porosity (n) and the degree of saturation (S) of a soil sample are 0.7 and 40%, respectively. In a 100 m3 volume of the soil, the volume (expressed in m3) of air is _________ 9/14

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GATE 2016 Civil Engineering Set-1 Q.41 A homogeneous gravity retaining wall supporting a cohesionless backfill is shown in the figure. The lateral active earth pressure at the bottom of the wall is 40 kPa. Cohesionless Gravity Retaining backfill 6m Wall P 4m The minimum weight of the wall (expressed in kN per m length) required to prevent it from overturning about its toe (Point P) is (A) 120 Q.42 (B) 180 (C) 240 (D) 360 An undisturbed soil sample was taken from the middle of a clay layer (i.e., 1.5 m below GL), as shown in figure. The water table was at the top of clay layer. Laboratory test results are as follows: Natural water content of clay Preconsolidation pressure of clay Compression index of clay Recompression index of clay Specific gravity of clay Bulk unit weight of sand : : : : : : 25% 60 kPa 0.50 0.05 2.70 17 kN/m3 A compacted fill of 2.5 m height with unit weight of 20 kN/m3 is placed at the ground level. 1m GL Sand 1m GWT Clay Hard stratum Assuming unit weight of water as10 kN/m3, the ultimate consolidation settlement (expressed in mm) of the clay layer is ____________ CE(1) 10/14

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GATE 2016 Civil Engineering Set-1 Q.43 A seepage flow condition is shown in the figure. The saturated unit weight of the soil sat = 18 kN/m3. Using unit weight of water, w = 9.81 kN/m3, the effective vertical stress (expressed in kN/m2) on plane X-X is ________ 3m 1m Soil sat = 18 kN/m3 5m X X 1m 2m Q.44 CE(1) A drained triaxial compression test on a saturated clay yielded the effective shear strength parameters as c' = 15 kPa and ' = 22o. Consolidated Undrained triaxial test on an identical sample of this clay at a cell pressure of 200 kPa developed a pore water pressure of 150 kPa at failure. The deviator stress (expressed in kPa) at failure is _________ 11/14

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GATE 2016 Civil Engineering Set-1 Q.45 A concrete gravity dam section is shown in the figure. Assuming unit weight of water as 10 kN/m3 and unit weight of concrete as 24 kN/m3, the uplift force per unit length of the dam (expressed in kN/m) at PQ is _________ 65 m Drain holes 5m P Q 40 m 10 m Q.46 Seepage is occurring through a porous media shown in the figure. The hydraulic conductivity values (k1, k2, k3) are in m/day. Impervious 15 m 3m 10 m P k1 = 2 k2 = 3 k3 = 1 3m Q 20 m 10 m 20 m 10 m The seepage discharge (m3/day per m) through the porous media at section PQ is 7 (A) 12 Q.47 1 2 (C) 9 16 3 (D) 4 A 4 m wide rectangular channel, having bed slope of 0.001 carries a discharge of 16 m3/s. Considering Manning's roughness coefficient = 0.012 and g = 10 m/s2, the category of the channel slope is (A) horizontal CE(1) (B) (B) mild (C) critical (D) steep 12/14

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GATE 2016 Civil Engineering Set-1 Q.48 A sector gate is provided on a spillway as shown in the figure. Assuming g = 10 m/s2, the resultant force per meter length (expressed in kN/m) on the gate will be __________ Sector gate 5m 30 30 Spillway Q.49 A hydraulically efficient trapezoidal channel section has a uniform flow depth of 2 m. The bed width (expressed in m) of the channel is __________ Q.50 Effluent from an industry 'A' has a pH of 4.2. The effluent from another industry 'B' has double the hydroxyl (OH-) ion concentration than the effluent from industry 'A'. pH of effluent from the industry 'B' will be __________ Q.51 An electrostatic precipitator (ESP) with 5600 m2 of collector plate area is 96 percent efficient in treating 185 m3/s of flue gas from a 200 MW thermal power plant. It was found that in order to achieve 97 percent efficiency, the collector plate area should be 6100 m2. In order to increase the efficiency to 99 percent, the ESP collector plate area (expressed in m2) would be ______ Q.52 The 2-day and 4-day BOD values of a sewage sample are 100 mg/L and 155 mg/L, respectively. The value of BOD rate constant (expressed in per day) is _________ Q.53 A two lane, one-way road with radius of 50 m is predominantly carrying lorries with wheelbase of 5 m. The speed of lorries is restricted to be between 60 kmph and 80 kmph. The mechanical widening and psychological widening required at 60 kmph are designated as ,60 and ,60 , respectively. The mechanical widening and psychological widening required at 80 kmph are designated as ,80 and ,80 , respectively. The correct values of ,60 , ,60 , ,80 , , respectively are ,80 (A) 0.89 m, 0.50 m, 1.19 m, and 0.50 m (C) 0.50 m, 1.19 m, 0.50 m, and 0.89 m CE(1) (B) 0.50 m, 0.89 m, 0.50 m, and 1.19 m (D) 1.19 m, 0.50 m, 0.89 m, and 0.50 m 13/14

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GATE 2016 Civil Engineering Set-1 Q.54 While traveling along and against the traffic stream, a moving observer measured the relative flows as 50 vehicles/hr and 200 vehicles/hr, respectively. The average speeds of the moving observer while traveling along and against the stream are 20 km/hr and 30 km/hr, respectively. The density of the traffic stream (expressed in vehicles/km) is _________ Q.55 The vertical angles subtended by the top of a tower T at two instrument stations set up at P and Q, are shown in the figure. The two stations are in line with the tower and spaced at a distance of 60 m. Readings taken from these two stations on a leveling staff placed at the benchmark (BM = 450.000 m) are also shown in the figure. The reduced level of the top of the tower T (expressed in m) is _________ T 16.5o 2.555 0.555 10.5o Q BM 450.000 P 60 m END OF THE QUESTION PAPER CE(1) 14/14

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Q. No 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Type Section MCQ GA MCQ GA MCQ GA MCQ GA MCQ GA MCQ GA MCQ GA MCQ GA MCQ GA MCQ GA NAT CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 NAT CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 NAT CE-1 MCQ CE-1 NAT CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 NAT CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 MCQ CE-1 NAT CE-1 MCQ CE-1 MCQ CE-1 NAT CE-1 Key D A A C D B D D B B 0.355 : 0.365 C D A B A D 99.9 : 100.1 C B B D D 21.5 : 21.7 B 13.6 : 13.7 A A B A B 1199 : 1201 C C A A B B C A MTA D A D B 9999 : 10001 B B 37 : 38 Marks 1 1 1 1 1 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2

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40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 NAT MCQ NAT NAT NAT NAT MCQ MCQ NAT NAT NAT NAT NAT MCQ NAT NAT CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 CE-1 41 : 43 A 36 : 38 65.3 : 65.6 100 : 110 10490 : 10510 B B 126 : 128 2.29 : 2.32 4.4 : 4.6 8000 : 8040 0.29 : 0.31 B 2.9 : 3.1 476.500 : 477.500 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

 

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