CIVIL ENGINEERINGOBJECCTIVE TYPE

PAPER – I

INSTRUCTIONS

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which a wrong answer has been given by the candidate, one-third 0.33 of the marksassigned to that question will be deducted as penalty.

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DTest Booklet Series

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01. Which of the following statements is/are correct?1. For statically determinate

structures, magnitudes formaximum effects due to a seriesof concentrated loads can beestablished with the aid ofinfluence lines.

2. Cables in suspension bridges willnot take the parabolic shape ifuniformly loaded along thehorizontal span.

3. In a three-hinged arch structure,the normal force, shear andmoment at any section are notinfluenced by the horizontalreaction at the support.

a 1, 2 and 3 b) 1 onlyc 2 only d) 3 only

Ans: b

02. A three-hinged arch of span L and riseR is subjected to a concentrated load Pat the crown-point. The horizontalthrust at the support is

aR4

PLb)

R

PL

cL

PRd)

R3

PL

Ans: (a)

03. A simply supported beam of span Lshown in the above figure is subjectedto a concentrated load W at its mid-span and also to a uniformlydistributed load equivalent to W. It hasa flexural rigidity of EI. What is thetotal deflection at its mid-point?

aEI

WL

384

5 3

b)EI

WL

384

9 3

cEI

WL

384

13 3

d)EI

WL

384

18 3

Ans: (c

04. The force in member BC is

a22

Pb) zero

c3

P2d)

2

3P

Ans: (b

05. The degree of static indeterminacy forthe rigid frame as shown above is

a 3 b) 4 c 5 d) 6

Ans: (c

06. Clockwise moments are applied toboth the ends of a uniform simplysupported beam. If the ratio of therotation of two ends is 2, then the ratioof the applied moments will be

a4

5b)

5

7c

3

5d)

2

3

Ans: (a)

07. Which of the following statements arecorrect?1. It is common practice to discount

the influence of axial thrust onbending stiffness of members offrames.

6060

B C

A

P

B

L

L/2W

W

A

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2. In a portal frame of single bay,the columns have differentthermal coefficients ofexpansion. If the whole frame issubjected to a sametemperature, there will be acomponent of deformation in thevertical direction.

3. The flexibility method of analysiscannot be used to solve any kindof indeterminate structuralproblem.

a 1,2 and 3 b) 1 and 3 onlyc 1 and 2 only d) 2 and 3 only

Ans: (c

08. Stiffness method of structural analysisstarts witha force -deformation relationsb) equilibrium conditionc compatible deformationd) equilibrium state of internal stress

components

Ans: (b

09. A stepped circular shaft is fixed at Aand C as shown in the above figure.The diameter of the shaft along BC istwice that of as along AB. Thetorsional rigidity of AB is GJ. Thetorque required for unit twist at B is

a

GJ2b)

GJ5

c

GJ9d)

GJ17

Ans: (d

10. The force required to produce a unitdisplacement translation withoutrotation) at either one-third point of afixed beam of span l and of uniformflexural rigidity EI is

a3

EI729

b)

3

EI724

c33

EI724

d)

32

EI729

Ans: (d

11. The stiffness coefficient k11 for thebeam as shown above is

a

33 b

1

a

1EI b)

33 b

1

a

1EI2

c

33 b

1

a

1EI3 d)

33 b

1

a

1EI4

Ans: (d

12. For which one of the following cases isthe Muller-Breslau principle applicableto get influence line?a Reaction at the ends of a simple

beamb) Bending moment at a sectionc Shear force at a sectiond) Forces and moments at any section

Ans: (d

13. The area of influence diagram for thereaction at the hinged end of a uniformpropped cantilever beam of span l is

a8

3b)

2

c

4

d)

8

Ans: (a)

BAC

ll

A Bhinge

C

a b

1

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14. Consider the following statements:1. The virtual work method is

preferred to the equilibriummethod for the determination ofcollapse load in a structure.

2. The number of plastic hingesrequired for the total collapse of astatically indeterminate structure isone less than the degree ofindeterminacy of the structure.

3. In a large system the uniformlydistributed load can be replaced bya number of concentrated loads tosimplify the plastic analysis.Which of these statements arecorrect?

a 1, 2 and 3 b) 1 and 2 onlyc 1 and 3 only d) 2 and 3 only

Ans: (c

15. For the frame shown above, what is thehorizontal thrust at A?

a 5 kN b) 8 kNc 10 kN d) 12 kN

Ans: No AnswerThe Correct Answer is 4 kN

16. Mid-span deflection for the beam-loadsystem shown above can be obtainedby1. Area-moment method2. Energy method3. Generalized three moment equation4. Conjugate beam method

a 1,2 and 3 only b) 1,2 and 4 onlyc 2,3 and 4 only d) 1,2,3 and 4

Ans: (b

17. A frame ABCD is supported by a rollerat A and is on a hinge at C as shown inthe above figure. The reaction at theroller end A is given by

a P b) 2 P c P/2 (d) zero

Ans: (d

18. Dead load of the beams is /2 per unitrun. Live load on the beams is /2 perunit run. The two segments are hoistedon simple supports; and then continuityis established at the mid-support beforelive load is applied. The design mid-span moment is

a8

2b)

16

2

c32

2d)

32

3 2

Ans: (a)

2m 2m

4m6m

20 kN

B

A

P

A C

l/2 l/2

B

EI=const

P

CB

L

A

D

L/2 L/2L/2

P

llEI=Const

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19. The static indeterminacy of the frameshown above is

a 4 b) 6 c 8 d) 10

Ans: (b

20. The equivalent spring constant for theset up shown in the above figure,where EI = unity throughout, is

a 30 units b) 36 unitsc 40 units d) 48 units

Ans: (a)

21. Which of the following factors wouldgreatly affect the attainment of bestpossible strength of the concrete mixproduced using the weigh-batcher?1. Moisture content in the sand and

gravel2. Inadequate or excess use of

approved admixtures3. Speed of rotation of the drum4. Non-emptying of the drum as fully

as possiblea 1 and 4 b) 1 and 2c 2 and 3 d) 3 and 4

Ans: (b

22. The initial cost of equipment is Rs.1100, salvage value is Rs. 100 and lifeof equipment is 5 years. The rate ofinterest for sinking fund is 8%. Theyearly depreciation by straight linemethod isa Rs. 200 b) Rs. 400c Rs. 600 d) Rs. 800

Ans: (a)

23. In a construction project, the cost-slopeof an activity is an indication ofa extra -time neededb) extra cost neededc reduction of duration of critical

activityd) crashing of an activity

Ans: (b

24. Which of the following statements arecorrect?Tilting type concrete mixers arepreferred in situ:1. Because problem of clogging the

opening is avoided.2. For large constructions only.3. Because they are suitable for dry

mix.4. Whenever the rated capacity is

more than 200 litres.

a 1 and 2 b) 2 and 3c 1 and 3 d) 2 and 4

Ans: (d

25. An equipment for use in constructionactivity is purchased now for Rs.15000, and is used continuously on thejob. The annual OMR costs assignableas lump sum at the respective yearbeginning are Rs. 5000. The equipmentwill be used for 5 years after which itssalvage value is estimated to then beRs. 1000. The equivalent annual costas reckoned at the end of each yearwhen MACR is 10% for which SFF for5 years is 0.1638 is

hinge

B

K=48 units

1 unitA

C D0.50.5

1 unit

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a Rs. 7800 b) Rs. 8000c Rs. 8793 d) Rs. 8957

Ans: ------

26. Which of the following statements arecorrect?1. Drag lines are superior to hoes in

excavation jobs.2. Hoes are more rigid than power

shovels.3. For deeper excavations power

shovels give lesser output thanhoes.

4. Hoes exert greater tooth power ascompared to draglines.

a 1 and 2 b) 2 and 3c 1 and 3 d) 2 and 4

Ans: (a)

27. If the free haul distance is 200 m, thecost of borrow including excavationand hauling) is Rs. 4/m3 at station.Cost of haulage beyond free haul is Rs.0.75/m3 per station-meter. The limit ofeconomical haul distance isa 160 m b) 260 mc 360 m d) 460 m

Ans: (c

28. A four-wheel tractor whose operatingweight is 15,000 kg is pulled along alevel haul road at a uniform speed byanother tractor. The average tension inthe toe cable is 675 kg. The rollingresistance of the haul road isa 25 kg/t b) 35 kg/tc 45 kg/t d) 55 kg/t

Ans: (c

29. A four-cycle gasoline engine whentested at temperature 35C andpressure of 740 mm of Hg was foundto develop 75 HP. Its horse power atstandard condition is

a760

740

5.288

30875

b)740

760

308

28875

c760

740

5.288

30875

d)5.288

308

740

76075

Ans: (d

30. Given the SPCAF, for 10%, for 1,2and 3 years are respectively, 1.1000,1.2100 and 1.3310, what is C.R.F. for10% for 3 years?a 0.7513 b) 0.5187c 0.3021 d) 0.4021

Ans: (d

31. An equipment costs Rs. 25000 topurchase now. It will be usedcontinuously for 8 years. At the end, itssalvage value is estimated to be Rs.1600. Its residual book value atbeginning of the 6th year of its use, bythe straight line method of depreciationisa Rs. 6250 b) Rs. 9375c Rs. 10375 d) Rs. 7450

Ans: (c

32. Which of the following statements arecorrect in respect of a linked-bar chart?1. Any activity can be shown split

into several sub-parts if sodesirable.

2. Inter-linkages between WBSgroups can be depicted.

3. Mandatory pauses betweenactivities are also alwaysdemonstrated on the chart.

4. Scheduling of materialprocurement can optionallyenhance the utility.

a 1 and 2 b) 2 and 3c 3 and 4 d) 1 and 4

Ans: (a)

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33. Consider the following statementspertaining to CPM net work analysis:1. It is event-oriented method2. It is activity –oriented method3. Time and cost are controlling

factors.4. Time alone is controlling factors.Which of these statements are correct?a 1 and 2 b) 2 and 3c 3 and 4 d) 1 and 4

Ans: (b

34. Which of the following do notcharacterize the critical path?1. Falls on single straight line

between start and end nodes2. Has no dummies3. Indicates the minimum feasible

duration for the complete project4. Indicates the maximum sensible

duration in which to completethe project

5. Has no parallel sub-pathsbetween any two nodes on it

a 2, 4 and 5 b) 1,2 and 5c 2,3 and 4 d) 1,3 and 4

Ans: (b

35. In a critical path network, which of thefollowing are involved?1. A series of interconnected

activities2. Considerations for uncertainties

in time estimate3. A logical sequence of activities is

provided4. The node number at the arrow

head is numerically smaller thanthat at tail end

a 1 and 2 b) 2 and 3c 3 and 4 d) 1 and 3

Ans: (d

36. Which one of the following relates todetermination of critical path in PERT?a Event-oriented slackb) Activity-oriented slackc Event-oriented floatd) Activity-oriented float

Ans: (a)

37. PERT calculations yield a projectlength of 70 weeks with a variance of 9weeks. The number of weeks requiredto complete the project with aprobability of 95% probability factorfor 95% = 1.647 isa 73.94 weeks b) 74.94 weeksc 75.94 weeks d) 76.94 weeks

Ans: (b

38. A linear project is split into sixidentical activities, each having a, mand b durations of 4, 8 and 10 days,which results in the standard deviationof the duration for the complete projectbeing X1 days. As an alternativeattempt at project planning, the earlier-split six activities are clubbed as 1 st

and 2nd, 3 rd and 4th and 5 th and 6th ,thus needing to consider only threenow -modified) activities; and thestandard deviation of the duration forthe complete project is now reported as

X2 days. What will be the ratio1

2

X

X?

a3

2b)

6

7

c6

5d) 1

Ans: (d

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39. A father notes that his teenage son usesthe telephone. He takes no less than 5minutes for a call and sometimes asmuch as an hour. 20 minutes calls aremore frequent than calls of any otherduration. Considered as a PERTactivity a phone call’s expectedduration in minutes is

a 206

1b) 22

6

1

c 246

1d) 26

6

1

Ans: (c

40. A project is estimated to cost Rs. 100million inclusive of 20% thereof ascost of direct labour. However, 60%of the labour hours budgeted for isnon productive. If 15% of such wastedlabour hours are intended to becurtailed by improved methods ofcontrol, then the resulting savings inlabour cost would bea Rs. 1.2 m b) Rs. 1.5 mc Rs. 1.8 m d) Rs. 2.0 m

Ans: (c

41. Consider the following statementsregarding resourceallocation/adjustment:1. Economical utilization of

resources.2. Adjustment of resources to have

least variation in resourcehistogram.

3. Gradual increase in resources4. Activities are so rescheduled that

maximum projected need for anyresources does not cross the limitof available resources.

Which of these statements are correct?a 1 and 2 b) 2 and 3c 3 and 4 d) 2 and 4

Ans: (d

42. There is a task involving 160m2 offixing timber form work for the roofslab of a single storey building. Thetime earmarked for completion is fourdays, working eight hours per day. If aworkers team consisting of two skilledworkers and an unskilled worker caninstall the formwork at the rate of 1.25m2/hr, then the number of teamsrequired isa 3 b) 4 c 5 d) 6

Ans: (b

43. Which one of the following fourshapes for a compound column of thesame effective height formed with twoequal angles has the largest axialcompressive load carrying capacity?

a b)

c d)

Ans: (b

44. Two angles of ISA 100 1006 havebeen used as a tie member. The anglesare welded on either side of a gussetand tag welded over its length. Themaximum length of the member is:For ISA 100 1006, Area = 2334mm2 and YXX = 30 mma 5.4 m b) 6.0 mc 12.0 m d) 24.0 m

Ans: (a)

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45. A crane with two wheels per side has acapacity of 50 kN. Weight of the craneis 100 kN, weight of the trolley is 10kN and the span is 12 m. Themaximum static wheel load with hookclearance of 1.0 m from the wheel isa 50 kN b) 52.5 kNc 55 kN d) 60 kN

Ans: (b

46. Gantry girders are designed to resist:1. Lateral loads2. Longitudinal loads3. Vertical loadsa 1 and 2 onlyb) 1 and 3 onlyc 2 and 3 onlyd) 1, 2 and 3

Ans: (d

47. The effective width of outstand incompound steel columns for designpurposes is equal toa half the flange widthb) distance of the free edge from the

rivet linec distance of the free edge from the

stiffenersd) distance of the free edge to the

nearest row of rivets

Ans: (d

48. For a steel built up column subjected toan axial force of 1200 kN, the lacingsystem is to be designed for resistingtransverse shear ofa 15 kN b) 20 kNc 25 kN d) 30 kN

Ans: (d

49. At a certain location of a plate girderof web size 1000 mm 10 mm, a pairof bearing stiffeners 100 mm 5 mmis welded. The effective area ofbearing stiffeners is

a 1000 mm2 b) 2000 mm 2

c 3000 mm2 d) 5000 mm 2

Ans:d

50. ISMB 250 Ze = 410 103 mm 3 hasbeen chosen as a beam cross-section toresist a bending moment. Two plates100 mm 10 mm are welded to eachflange to enhance the momentcapacity. The enhanced momentcapacity isa 71.5 kNm b) 79.5 kNmc 99.0 kNm d) 148.0 kNm

Ans: -----

51. A monorail crane runs on an I-sectionof span 6 m, which is simplysupported. Estimate the deflection forcrane capacity of 20 kN, crab weightof 4 kN, impact factor of 25% and EI =101012 N-mm2. Deflection due toself-weight is neglected.a 6 mm b) 9 mmc 12 mm d) 18 mm

Ans: (c

52.

An industrial building with 5 bays each3 m wide has columns of height 4 m.The two end bays are braced by rods asshown in the above figure. Eachcolumn carries an axial load of120 kN. The design force for eachbrace isa 6 kN b) 9 kNc 15 kN d) 30 kN

Ans: (a)

4m

3m 3m 3m 3m 3m

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53. Which of the following statements arecorrect?1. In a steel compound column

section, the width will be smallerwhen they are placed face to facethan when they are placed backto back.

2. In the design of steel compoundcolumns the length of battens arenormally longer than the lacings.

3. Lacings in a steel compoundcolumn are designed as slendercompression members

a 1 and 3 only b) 1 a nd 2 onlyc 2 and 3 only d) 1, 2 and 3

Ans: (a

54. Bearing stiffeners in plate girders areprovided toa decrease the effective depth of

webb) transfer the load from the top

flange to the bottom flangec prevent buckling of webd) increase the bearing capacity of

the flange

Ans: (c

55. Which of the following statementsis/are correct?1. A steel structure designer can

guarantee the safety of thestructure.

2. Working stress method of designof steel structures offers a saferand economical structure.

3. Strength and serviceability of astructure cannot be predicted onaccount of several unforeseenfactors.

a 1, 2 and 3 b) 3 onlyc 2 only d) 1 only

Ans: (b

56. Which of the following statements arecorrect?1. Knots in a tree affect the

continuity of fibres.2. Nail knots do not influence the

strength of timber.3. Druxiness of wood is not a defect4. Tall trees with twisted fibres

given good timber for polesa 1, 2 and 3 and 4b) 1, 2 and 4 onlyc 1, 2 and 3 onlyd) 2, 3 and 4 only

Ans: (b

57. Excrescences in wood are:1. Defects found in trees2. Formed due to injuries inflicted on

trees when they are growing3. Defects which render wood suitable

as firewood onlya 1, 2 and 3 b) 1 and 2 onlyc 1 and 3 only d) 2 and 3 only

Ans: (b

58. What treatment is adopted for makingtimber fire-resistant?a ASCU treatmentb) Abel’s processc Creosotingd) Tarring

Ans: (b

59. Deterioration of structure of timber dueto dry rot is:1. Caused by fungi2. Due to dry-spell after heavy rains3. Due to attack of termites4. Indicated by surface stripes on

scantlingsa 1 and 2 b) 3 and 4c 2 and 3 d) 1 and 4

Ans: (a)

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60. Alternate wetting and drying of timber:1. Results in shrinkage and swelling2. Brings about wet rot onset3. Increases the durability4. Causes transmission of spores from

germinationa 1, 2 3 and 4b) 1, 2 and 4 onlyc 1, 2 and 3 onlyd) 2, 3 and 4 only

Ans: (b

61. As per I.S classification, the minimumcompressive strength of a first classbrick should bea 75 kg/cm2 b) 100 kg/cm 2

c 125 kg/cm2 d) 150 kg/cm 2

Ans: (b

62. When provided with alternatingcourses of a all headers and b) allstretchers, the front elevation of suchbrick masonry is designated asa English bondb) Single Flemish bondc Double Flemish bondd) Rat-trap bond

Ans: (a)

63. I.S Code specifies that the compressivestrength of brick shall be determinedby keeping the brick:1. On edge2. On bed3. After soaking in water for 2 hrs4. After soaking in water for 24 hrsa 1 and 2 b) 2 and 3c 3 and 4 d) 2 and 4

Ans: (d

64. Soundness test of cement is carried outto determine itsa alumina contentb) iron oxide contentc free lime contentd) durability under sea water

Ans: (c

65. The objectives of producing cementinclude:1. Incorporating industrial wastes2. Increasing free lime3. Increasing fineness4. Saving energy needed in the

processa 1, 2, 3 and 4b) 1, 3 and 4 onlyc 1, 2 and 4 onlyd) 2, 3 and 4 only

Ans: (b

66.

The principal stresses in N/mm2 on arectangular element are shown in theabove figure. The intensity of normalstress n on the oblique plane BE isa 125 N/mm2 b) 425 N/mm 2

c 375 N/mm2 d) 250 N/mm 2

Ans: (c

67. The strength of concrete depends on:1. Type of mortar2. Proportion between coarse and fine

aggregates3. Water cement ratio4. Temperature at time of mixinga 1 and 2 b) 2 and 3c 2 and 4 d 3 only

Ans: (b

68. Consider the following statements:1. Strength of structural concrete is

absolutely dependent upon watercement ratio.

D EA

BC

100 N/mm2

400 N/mm2400 N/mm2

100 N/mm2

n

300

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2. Increase in temperature duringcuring period improves thestrength, especially for aluminouscements.

3. The concern for onset of fatiguein concrete can be overcome byincreasing design loads in limitstate design.

4. Even though concrete gainsstrength after 28 days, suchincrease is not considered atdesign stage.

Which of these statements are correct?a 1, 2 and 3 b) 2, 3 and 4c 3 and 4 only d) 2 and 4 only

Ans: (d

69. The workability of concrete is assessedthrough:1. Slump test2. Compaction factor test3. Setting time of cement4. Le-Chatelier’s apparatusa 1 and 2 b) 2 and 3c 3 and 4 d) 4 and 1

Ans: (a)

70. Consider the following statements asdescribing the Rheological behaviourof fresh concrete:1. Newtonian2. Non-Newtonian3. Ratio of shear stress to shear rate is

constant4. Ratio of shear stress to shear rate

depends upon the shear rateWhich of these statements are correct?a 1, 2, 3 and 4 b) 2 and 4 onlyc 1, 2 and 4 only d) 2, 3 and 4 only

Ans: (b

71. Which of the following tests comparesthe dynamic modulus of elasticity ofsamples of concrete?a Compression testb) Ultrasonic pulse velocity test

c Split testd) Tension test

Ans: (b

72. UPV method in nondestructive testingfor concrete is used to determine:1. Compressive strength2. Existence of voids3. Tensile strength4. Static modulus of concrete5. Dynamic modulus of concretea 1, 2, 3 and 4 b) 1 and 3 onlyc 2 and 5 only d) 3 and 5 only

Ans: (c

Directions:Each of the next Twenty 20) itemsconsists of two statements, one labeledas the ’Statement I and the other as‘Statement II’. You are to examinethese two statements carefully andselect the answers to these items usingthe codes given below:

Codes:a Both Statement I and Statement II

are individually true and Statement IIis the correct explanation of StatementI

b) Both Statement I and Statement IIare individually true but Statement IIis NOT the correct explanation ofStatement (I

c Statement I is true but Statement IIis false

d) Statement I is false but Statement IIis true

73. Statement I): Weight batchingmethod does not produce concrete ofrequired strength.Statement II): Bulking of aggregatesdoes not influence the weight batchingmethod.

Ans: (d

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74. Statement I): Shutter vibrators arepreferred over needle vibrators for pre-stressed precast beams for bridgesStatement II): Needle vibrators mayget choked by the leaking-in of cementpaste.

Ans: (a)

75. Statement I): In concreting for largeroof slabs, internal vibrators arepreferredStatement II: External vibratorsconsume more energy and disturb theformwork.

Ans: (a)

76. Statement I): In the erection of tallbuildings, tower crane is preferred.Statement II): Tower crane is acombination crane and it is suitablewhen the area is small and congested.

Ans: (a)

77. Statement I): For short distancehauls, dumpers are well suitedStatement II): Dumpers have theadvantage of larger capacity of 5 cu-mor more, and they are hauled by powerunits.

Ans: (c

78. Statement I: Power shovels mountedon trawlers are universally used forexcavating earth.Statement II): They have a dipperwith hard teeth to break even hardrocks

Ans: (a)

79. Statement I): Draw-bar pull exertedin crawler-tractors over laps betweendifferent speed ranges, which latter areachieved by operating in differentgears.

Statement II): Variations in rollingresistance of ground surfaces and thegrade of the surfaces rolled on,influence the magnitude of the neededdraw-bar pull.

Ans: (a)

80. Statement I: A wheel type tractorwith a scraper is employed to moveearth for short hauls.Statement II): Wheel type tractormoves faster than crawler type tractor.

Ans: (a)

81. Statement I): Diaphragm pump isvery popular in constructions requiringdewatering of trenches.Statement II): Diphragm pump ismore adaptable in performance thanother types pumps.

Ans: (a)

82. Statement I): An air vessel on thesuction side of a reciprocating pumpcontributes much to increase inefficiency.Statement II): Water gets sucked intothe pump cylinder faster.

Ans: (a)

83. Statement I): Negative slip is apossibility in reciprocating pumps.Statement II): Non-cavitations in along suction pipe with simultaneouslya short delivery pipe may cause thedelivery valve to open before thedischarge stroke starts.

Ans: (a)

84. Statement I): Reciprocating pumpsmay have more severe restrictions ontheir suction piping system thancentrifugal pumps.

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Statement II): Centrifugal pumps canhave the advantage of axial balancingto alleviate possible axial thrust at theeye of the pump.

Ans: (b

85. Statement I): A bar chart may lookawkward when demonstrating theworks to be executed for externalfinishes in multi-storey constructions.Statement II): External scaffoldingcan be dismantled in a top-to-downsequence only.

Ans: (b

86. Statement I): When LSS in drawn asa squared-diagram, the respective totalfloat for each sub-path will be shownin full at the head-end of that sub-path.Statement II): By considering LS forscheduling, the sparable time is pushedto the head-end.

Ans: (a)

87. Statement I): Interdependencebetween various events is shown on amilestone chart.Statement I I: Milestone are keyevents in time which occur as theproject progresses.

Ans: (d

88. Statement I): Probabilistic activityduration may yet be relevantlyassigned even when work outputs havebeen outputs have been standardizedfor labour gangs for the specifiedproject.Statement II): Results of work-studyare dependent on rest allowances andwork ratings.

Ans: (b

89. Statement I): PERT network isevent-oriented and it does not reflecton time or resources.Statement II): Planners can decideabout the uncertainties involved intime duration while planning itself.

Ans: (d

90. Statement I): When developing thetime-cost study of a project as a whole,the time-cost relationships of everyactivity therein may have necessarilyto be inputted.Statement II): Any project isconstituted by all the activities therein.

Ans: (a)

91. Statement I): Inherent weakness offinished plain concrete is the presenceof micro-cracks at the aggregateinterface. It is minimized by placingfibres in the concrete mix.Statement II): The fibres help totransfer all incidental loads at theinternal micro-cracks.

Ans: (a)

92. Statement I): When an equipment isused at a reduced post of service, theROR cannot be uniquely determinedeven when the log book of theequipment has been maintainedregularly.Statement II): OMR expendituremay be very much reduced when usedin reduced post of service.

Ans: (c

93. A mild steel rod tapers uniformly from24 mm dia. to 12 mm dia. over itslength of 400 mm. The rod when heldvertical is subjected to an axial tensileload of 12kN. E =2105 N/mm2. Theextension of the rod in mm would be

a2

3 b)32

c3

d)31

Ans: (d

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20 kN 20 kN

Yl

lY

Θ=45o

94.

A mild steel bar of square cross-section has a sectional area 200 mm2.It is subjected to an axial force of20kN as shown in the above figure.The intensity of the normal tensilestress is N/mm2 on the oblique plane1-1 at 45o with the YY-axis which isnormal to the longitudinal axis will bea 25 b) 50c 75 d) 100

Ans: (b

95. Poisson’s ratio of a material is 0.3.Then the ratio of young’s modulus tobulk modulus isa 0.6 b) 0.8c 1.2 d) 1.4

Ans: (c

96. The relationship between Young’sModulus E, Modulus of Rigidity C andbulk modulus K in an elastic materialis given by the relation

aCK3

KC9E

b)

CK3

KC3E

cCK9

KC9E

d)

CK9

KC3E

Ans: (a)

97. Which of the following statements arecorrect?1. In a ductile material elastic

deformation is more predominantthan plastic one.

2. Brittleness is not an absoluteproperty of a metal.

3. Rate of loading has no influencein changing the behaviour of ametal from ‘ductile’ to ‘brittle’ atlow temperatures.

4. Under hydrostatic compression, abrittle metal may change into aductile one.

a 1 and 2 b) 2 and 3c 3 and 4 d) 2 and 4

Ans: (b

98. The total deflection of a structure whensubjected simultaneously to differentsets of loading is equal to the sum ofthe deflections under each such set ofloads as if acting separately on thestructure. Which one of the followingjustifies this statement?a Elastic limit is not exceededb) Elastic limit including buckling is

not exceeded.c Limit state is not exceededd) Proportional limit without buckling

is not exceeded.

Ans: (d

99. A rectangular bar of cross-sectionalarea A is subjected to an axial tensileload P. The maximum shear stress willoccur on a plane at Xo to any normalcross-section where Xo isa 90 o b) 270o

c 180 o d) 45 o

Ans: (d

100.A solid circular shaft has beensubjected to a pure torsion moment.The ratio of maximum shear stress tomaximum normal stress at any pointwould bea 1:2 b) 1:1c 2:3 d) 2:1

Ans: (b

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+ +

EDCBA

101.Which of the following statements arecorrect?1. All load carrying member

transmit load through basicmodes of tension, compression,torsion and shear only.

2. Beams carry transverse loads.3. Combines loading is a

complicated loading.4. Nature of internal force decides

the aspect of combined loading.a 1 and 2 b) 2 and 3c 3 and 4 d) 2 and 4

Ans: (a)

102.A rectangular beam of dimensionsbd is to be cut from a circular log ofwood of diameter D. For the beam tobe strongest in bending, thedimensions will be

a3

2Dand

2

D

b)3

2Dand

3

D

c3

D2and

2

D

d)3

D2and

3

D

Ans: (b

103.Which of the following statements arecorrect?1. Experimental results on thin-

walled tubes show thatmaximum normal stress theory isvalid.

2. Normal stress theory is valid incase of brittle materials.

3. In case of pure shear, St.Venant’s theory is more validthan other theories.

4. Tresca’s theory is very closelysubstantiated by experimentalresults.

5. In maximum stress theory, theyield locus is a hexagon.

a 1,2 and 3 b) 2,4 and 5c 1,2 and 4 d) 2,3 and 4

Ans: (a)

104.A thin cylindrical shell made of mildsteel plate is 1000 mm in diameter. It isto be subjected to an internal pressureof 2 N/mm2. If the material yields at200 N/mm2, the thickness of the platein mm on the basis of Rankine’s theoryof failure with assuming a factor ofsafety of 3 would bea 10 b) 12 c 15 d) 18

Ans: (c

105.

Consider the following statements withreference to a continuous beamsupported at A,C and E for to whichshear force diagram is shown in theabove figure.There is:1. A concentrated load acting at

point B.2. A concentrated load acting at

point D.3. A uniformly distributed load

acting on the portion CE.Which of these statements are correct?a 1,2 and 3 b) 1 and 2 onlyc 2 and 3 only d) 1 and 3 only

Ans: (d

106.Which of the following loads shouldbe applied on simply supported beam,so that the shear force is constantthroughout its span?

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a U.D.L over the entire spanb) Two concentrated loads equally

spaced in the span.c A central concreted load and a

U.D.L over the entire span.d) A couple any where in the span.

Ans: (d

107.A simply supported rolled steel joistof I-section has flange width 250 mmand overall depth 600 mm. Its momentof inertia IXX= 12108 mm4. The steeljoist is used as a beam over a simplysupported span of 6 m. It carries a loadof 40 kN/m including its self weightthroughout the span. The maximumstress induced in the beam in N/mm2

due to bending would bea 30 b) 90 c 45 d) 60

Ans: (c

108.Which of the following termsrepresents the torque that produces atwist of one radian in a shaft of unitlength?a Torsional stressb) Torsional rigidityc Flexural rigidityd) Moment of resis tance

Ans: (b

109.A 60 mm dia. Shaft is subjected to atorque of 6 kN-m. C = 8104 N/mm2.The maximum shear stress induced inthe shaft in N/mm2 will be

a9

8000b)

94000

c9

12000 d9

16000

Ans: (b

110. A water main 160 cm dia. containswater at a pressure head of 200 m.Take weight of water to be 1000kg/m3. The thickness of the metal shellrequired for the water main, given that

the maximum permissible stress in themetal is 400 kg/cm2, will bea 1 cm b) 2 cmc 3 cm d) 4 cm

Ans: (d

111.Which one of the following states fallsunder the ‘Limit state ofServiceability’ as per IS-456?a Stability under loadb) Loss of equilibrium of a structurec Floor vibrationd) Formation of mechanism

Ans: (c

112. Splicing of rebars in RCC beams canbe done at a section wherea bending moment is zerob) bending moment is less than half

of the maximum bending momentin beam.

c bending mome nt is maximumd) shear force is zero

Ans: (b

113.Which of the following statements arecorrect?1. The conventional rigid frame

system of columns and beamsworks well for carrying bothvertical and lateral loads forbuildings up to 28 storeys height.

2. A shear wall does not providestability against lateral loads.

3. Drying shrinkage is caused by theevaporation of water fromconcrete stored in unsaturated air.

a 1,2 and 3b) 1 and 2 onlyc 1 and 3 onlyd) 2 and 3 o nly

Ans: (c

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b

d/2

d/2

114.As per IS-456:2000, side facereinforcement in a beam is provided

where depth of the web exceedsa 750 mm b) 250 mmc 500 mm d) 1000 mm

Ans: (a)

115.Factor of safety is the ratio ofa tensile stress to working stressb) compressive stress to working

stressc bending stress to working stressd) yield stress to working stress

Ans: (d

116.Consider the following statements forprediction of yield lines in a reinforcedconcrete slab:1. They represent the axis of rotation.2. They will propagate outward from a

point load.3. They are straight lines between two

intersecting planes.4. They end at the boundary of the slab

or at another yield line.Which of these statements are correct?a 1, 2,3 and 4b) 1,2 and 3 onlyc 1,2 and 4 onlyd) 2,3 and 4 only

Ans: (a)

117.

The above figure represents a sectionof a pre-stressed beam. For a no-

tension design where c is thepermissible stress in concrete, the totalmoment carrying capacity is

a3

bd c2

b)4

bd c2

c6

bd c2

d12

bd c2

Ans: (c

118.Spalling stresses are produced in post-tensioned pre-stressed concretemembers because ofa bursting fo rceb) highly concentrated tendon forcec inadequate anchor blockd) maximum shear zone

Ans: (b

119.Which of the following statements arecorrect?1. Splices in flexural members

should not be at a sectionswhere the BM is more than 50%of the moment of resistance.

2. Normal lap splines can be usedfor all types of bars irrespectiveof the sizes.

3. Where bars of two differentdiameters are to be spliced, thelap length shall be calculated onthe basis of the diameter of thesmaller bar.

a 1 and 2 only b) 1 and 3 onlyc 2 and 3 only d) 1,2 and 3

Ans: (a)

120.A concordant cable profile in prestressed concrete isa parallel to the beam axisb) one which coincides with the

centroidal axis of beamc one which does not cause

secondary stressesd) one which eliminates primary

stresses.Ans: (c

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