Engg Services Civil Engineering Objective Paper 1 2010

7/27/2019 Engg Services Civil Engineering Objective Paper 1 2010

1/24

~ ' ) " V l ' c e ' S ~ ) j n J 2010~ ~ ; . ~ ~ - . ; . ; : : .181lneerrn, Service FY'-in,t;08 .-. ,-_.DO NOT OPEN THIS TEST BOOKLET UNTIL YOU ARE ASKED TO DO SO

T.B.C. : Q-GUG-K-DFA Test Booklet Series

Serial N ~ 018789TEST BOOKLET

CIVIL ENGINEERINGPAPER I

Time Allowed: Two HoursINSTRUCTIONS

Maximum Marks : 200

1. IMMEDIATELY AFTER THE COMMENCEMENT OF THE EXAMINATION, YOU SHOULDCHECK THAT THIS TEST BOOKLET DOES NOT HAVE ANY UNPRINTED OR TORNOR MISSING PAGES OR ITEMS ETC, IF SO, GET IT REPLACED BY A COMPLETETEST BOOKLET,2. ENCODE CLEARLY THE TEST BOOKLET SERIES A, B, C, OR D AS THE CASE MAYBE IN THE APPROPRIATE PLACE IN THE ANSWER SHEET,3. You have to enter your Roll Number on the , - - - - - - - - - - - - - ,

Test Booklet in the Box prov;ded alongside,DO NOT write anything else on the Test Booklet,4. 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. Incase 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,5. You have to mark all your responses ONLY on the separate Answer Sheet provided, Seedirections in the Answer Sheet.6. All items carry equal marks.7. Before you proceed to mark in the Answer Sheet the response to various items in the TestBooklet, you have to fill in some particulars in the Answer Sheet as per instructions sent toyou with your Admission Certificate.8. After you have completed filling in all your responses on the Answer Sheet and theexamination has concluded, you should hand over to the InvigiJator only th e Answer Sheet.You ure permitted to take away with you the Test Booklet,9. Sheets for rough work are appended in the Test Boliklet at the end,10. Penalty for wrong answers:

THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED ,BY A CANDIDATE IN THEOBJECTIVE TYPE QUESTION PAPERS.0) There are four alternatives fOT the answer to every question. For each question for which a wronganswer has been given by the candidate, one-third (0'33) of the marks assigned to that questionwill be deducted as penalty,(ii) Lf a candidate gives more than one answer, i t will be treated as a wrong answer even if one or

Lhe given answers happens to be correct and there will be same penalty as above to that question .(i i i) Jr"a question is left blank, i.e., no answer is given by the candidate, there will be no penalty forthat question.DO NOT OPEN THIS TEST BOOKLET UNTIL YOU ARE ASKED TO DO SO


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1. a " 2.

Which onecorrespondscharacteristicsbeam shown ?

of the following diagramsto the load-deflectionupto plastic collapse or ' the 3.

(a)

Deflection

(b) Load

Deflection

4.(c) Load

Deflection

(d ) Load

Deflection

QGUG-K-DFA ( 2 - A )

At .the location of a plastic hinge,(a) Radius of curvature is infinite(b) Curvature is infinite(c) Moment is infinite(d) Flexible stress is infinite

Consider the followingdesigning a laced column:

stipulations in

1. Single lacing systems on opposite planesshall preferably be in the same directionso that one is the shadow of the other.

2.3.

Lacing bar should be a flat section.The slenderness ratio of the lacing barsfor compression shall not exceed 180.

4. Laced compression members are to beprovided with ti e plates at ends.Which of the above observations is/arecorrect ?(a) 1 only(b) 1 an d 3(c) 2 an d 4(d) 1 an d 4

At a section along the span of a welded plategirder, in which the web is spliced, thebending moment at a section is M. The girderis comprised of top flange; web an d bottomflange plates all of equal areas. The share ofthe bending moment taken by spUce plateswould be(a)

(b)

(c)

(d)

MM.3M7M13


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5.

6.

A steel plate is 300 mm wide and 10 mmthick . A rivet of nominal diameter 18 mm isdriven. The ne t sectional area of the plateis(a) 1800 mm2(b ) 2805 mm 2(c) 2820 mm2(d) 3242 mm2

For an I-beam, the shape factor is 1'12; thefactor of safety in bending stress is 15. Ifthe allowable stress is increased by 20% forwind or earthquake loads, then the loadfactor is(a ) HO(b) 125(c) 135(d) H O

AL1\VGCD ' ~The influence line for force in member Be 'is(a)

(b)

(c)

(d)

9. Consider the following statements:

7. PERT calculations yield a project length of60. weeks ' "v;th a variance of 9 weeks.Probability factor corresponding to 95%'probability is 1'647; then the number ofweeks required to complete the project witha probability of 95% is(a ) 6094(h) 6294(e) 6494(d) 6694

Q-GUGK-OFA I 3 - A

1. PERT is activ;tyoriented and adoptsdeterministic approacli .

2. CPM is event-oriented and adoptsprobabilistic approach.3. PERT is e v e n t ~ o r i e n t e d and adoptsprobabilistic approach'.Which of the above statements islare correct?(a) 1 only(b) 1 and 2(e) 2 and 3(d) .3 only


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10.

11.

Fo r th e continuous beam shown, what is thereaction at A at collapse, by plastic analysis?(a) 5 wi12(b) wi-2(c) 7Wi12(d) 13 Wi24Consider the following statements:1. Shape factor2. Lenb>1:h of the beam3. Type of loading4. Yield strength of materialWhich of these. affect the influence length ofplastic hinge in . a beam?(a) 1 only(b) 1 and 3(C) 2 and 3(d) 3 and 4

12. In PERT analysis, the time estimates ofactivit;'es correspond to(a) Normal distribution(b) Poisson's distribution(c) P-distribution(d) Binomial distribution

13. A propped cantilever of span L is subjectedto a concentrated load at midspan. I f Mp isthe plastic moment capacity of the beam, .the value of collapse load will be

14.

(a)

(b) 8M pL

(c) 6M pL

(d) 4MpL

IE 100 '11r - - - - - - - ~ - - - - - - 10

100

~ I -10

T

..

The identical rectangle strips are joined toform a "hat" section. What is the plasticmoment capacity?(a) 50 x 103 cr. y(b ) 100 x 103 cry(e ) 155 x 103 cry(d) 300 x 103 cryWhere cr is Yield strength of steel. y

Q-GUG-K-OFA ( 4 - A )


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15. A father notes that when his teenage 18.daughter uses the telephone she takes noless than 5 minutes for a call butsometimes as m u ~ h as an hour. 15 minutescalls are more frequent than calls of anyother duration. If the daughter's calls wereto be represented as an activity in PERTproject, the expected duration of each phonecall is(a)

(b)

4 5 ,1 - mmutes6

~ - - . - - - -

Consider the following conditions with res,pectto plastic analysis:l. Su m of internal an d external forces an d

moments must be equal to zero.2. At ultimate collapse load, the number of

plastic hinges must be just enough toform a mechanism.

Which of th e above conditions is/are correct?(a) 1 only(b) 2 only(c) Neither 1 no r 2(d) Both 1 and 2minutes6 19. Poisson's ratio is defined as th e ratio of

16.

(c)

Cd}

5 ,18- mmutes60 5 ,2 - mmutes6

The maximum longitudinal pitch allowed inbolted joints of tension members is(a) 16 times the diameter of the bolt(b) 32 times the diameter of the bolt(c) 16 times tbe thickness of the plateCd}' 32 times the thickness of the plate

17. The base plate of a roof truss is attached tothe concrete pier with the help of 16 mmdiameter mild steel anchor bolts of gradefy = 250 MPa, What is the maximum pullthe base can be subjected to, if the rootarea of bolt = 0,75 times shank area?(a) 30 kN(b) 675 kN(c) 90 kN(d) 120 kN

20.

Q-GUG-K-DFA I 5 - A )

(a)

(b )(c)(d )

Longitudinal stress and longitudinalstrainLateral strain and longitudinal strainLongitudinal stress and lateral stressLateral stress an d longitudinal stress

A ~ .Th e influence line diagram for the supportmoment at A of the fixed beam AB of constantEI is(a) A --------------------- B

(b ) A - - - - - - - - - - - - - - - - - - - - - B

(e)A - - - - - - - - - - - - - - - - - - - - - BA--------------------- B(d)


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21. The use of 'Concordant cables' m 25.prestressed continuous beams induces

, (a) Initial support reactions(b) No initial Hupport reactions(c) EKcess cracking(d) Excess deflection

22. Which one of the following is no t requiredin concrete mix-desibTfl ?(a) Degree of quality control of concrete(b) Workability of concrete(c) Characteristic compressive strength ofconcrete at 28 days(d) Initial setting time of cement

23. The absolute maximum bending momentthat a simply supported girder , of span10 m experiences when two concentratedloads 20 kN and 30 kN spaced 2 m apart(30 kN' as leading at the right) crosses thegirder from left to right, is(a ) 112'2 kN-m(b) ' 966 kN-m(e) 1368 kN-m(d) 1058 kN-m

24. A solid shaft rotating at 180 rpm issubjected to a mean torque of 5000 Nm.What is th e power transmitted by the shaftin kW ?(a ) 25 1t(b) 20 1t(c) 60 1t(d ) 30 1t

26.

O-GUG-K-OFA I 6 - A )

ISection XX

k--- 6 x 15 = 9 m - - - - > IFo r the roof truss shown in figure, bottomchord is ofISMB 200 [rx = 83 mm,

ry = 22 mm].Bottom chord bracings are available at C an dD. Bottom member AE will be in compressiondue to wind. What is the critical slendernessratio used for th e design of member AE ?(a) 18(b) 36(c) 68(d) 136

Consider the following statements :In a simply supported beam subjected touniformly distributed load throughout th elength, at which points is th e stress due to(i ) Flexure and (ii) Shear equal to zeroselectively:1. At support section at neutral fibre.2. At mid span section a t neutral fibre.3. At mid span section at top fibre.4. At support section at bottom fibre.Which of the above statements isfare correct?(a) 1 only(b ) 1 and 2(c) 2 an d 3(d ) 2 an d 4


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- - . - - - - - - - - - - - - -

27. Consider th e following statements : 30.

28.

Ultrasonic pulse velocity test to measure thestrength of concrete isL Used to measure the strength of' wet

concrete.2.3.

Used to obtain estimate of .concretestrength of finished concrete elements .A destructive test.

4. A non-destructive test.Which of the above statements is/are correct? 31.(a)(b)(e)(d)

2 only1 and 32 an d 43 and 4

A building with a gabled roof will experiencepressure on it s leeward slope which is(a) Always positive(b) Always negative(c) Sometimes positive and otherwise

negative(d) ZeroThe live load for a sloping roo f with slope 15,where access is not provided to th e roof, istaken as(a)(b)(c)(d )

065 kN/m2075 kN/m21:35 kN/m2150 kN/m2A solid shaft has length an d diameter 'L ' and

'0 ' respectively. A hollow shaft of length Lh,external diameter 'D', and internal diameter I32. . The batten plates used to connect the

29 .

. 'd' respectively. Both ar e of the same materiaLThe ratio of torsional stiffness of hollow shaftto that of solid shaft is .

(a) [1 + ( ~ ) l(b) [ 1 - n(c) [1 - ( ~ ) l(d) [1 ( ~ n .A live load 20 kN/m, 6 m long, moves on asimply supported girder AB 12 m long. Fo rmaximum bending moment to occur at 4 mfrom left end A, where will th e head of loadbe, as measured from A ?(a) 4 m(b ) 6 m(c) 8 m(d) 10 m

33.

Q-GUGK-OFA I 7 - A )

components of a builtup column are designedto resist(a ) Longitudinal shear only(b) Tn;nsverse shear only(c) Longitudinal shear and moment arising

from transverse shear(d) Vertical shear onlyThe duration of any activity in case of a PERTprogramme is calculated as a weightedaverage of three time estimates namely th eoptimistic time ('0 , the pessimistic time tp andth e most p r o b a b ~ time tm, which is given as

(d ) (3to + ~ m + t p )


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34. In ISMC 400 channels placed back to back 37. A circular shaft which has a diameter of

35.

at a spacing of 26 em carry an axial loadof 160 tonnes. The lacing system should bedesigned to resist a transverse shear of(a) 16 tonnes(b) 12 tonnes(c) 8 tonnes(d) 4 tonnes

Consider thenetwork:

following statements of

1. Only one time estimate is ' required foreach activity.2.3.

4.

Three time estimates for each activity.Time and cost are both controllingfactors.I t is built-up of event-oriented diagram.

Which of the above statements are correctlyapplicable to CPM network?(a) 1 and 3(b) 1 and 2(c) 2 and 4(d) 3 and 4

36 . If a simply supported concrete beam,prestressed with a force of 2500 kN, isdesigned by load balancing concept for aneffective span of 10 m and to carry a totalload of 40 kNlm, the central dip ofcable profile should be(a) 100 mm(b) 200 mm(c) 300 mm(d) 400 mm

38.


100' mm is subjected to a torque of 5 kN-m.The shear stress, in N/mm2,. induced in theshaft would be(a )

(b)

(c)

(d)

160

1201t

125

80

Match List I with List II and select thecorrect answer using the code given belowth e lists :

List I(Type)

A. Single anglein roof trusses

B. Double anglesin roof trusses

C. Single I sectionin columns

D. Double I sectionin columns

Code:

A B

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

C

1144

List II(RecommendedSlenderness ratio)1. 80 - 150

2. 30 - 60

3. 100 - 180

4. 60 - 100

D

2323


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39. Flexibility matrix for a beam elemE\llt 1S 41.written in the form

[A ] = . ~3 [26EI 5What is the corresponding stiffness matrix ?

(a) 6 EI [16I} 5 :l. (b) 6 EI [16

7L3 5 :](c) 6 EI [16 -2

5]L3 -5

(d) 6 EI [16 ' ~ 2 5 ] .7 L3 .-5

40. Consider the following. statements relating tostructural analysis:1. Flexibility matrix and its transpose are

equal.2. Elements of main diagonal of stiffness

matrix are always positive.3. For unstable structures, coefficients in

leading diagonal matrix can be. negative.Which of the above statements is/are correct?(a) 1,2 and 3(b) 1 and 2 only(e) . 2 and 3 only(d) 3 only

42.

Q-GUG-K-DFA ( 9 - A )

3 3 6 48 , , ,,, ,3 . ,,, 84 4

,5

In th e above network,' th e duration ofactivities are written along their arrows. Thecritical path of th e activities is along(a) 1 - 2 - 3 - 5 - 7 - 8(b) 1 - 2 - 3 - 6 - 7 - 8(c) 1 - 2 - 4 - 5 - 7 - 8(d) 1 - 2 - 3 - 4 - 5 - 7 - 8

Flexibility matrix for a beam element is[36[F] = .!....EI 9 :]

What is the corresponding stiffness matrix[S]?

(a)[36S] = EI63 -9 -4

9]

(b) [36S] = EI63 9 :](c) [S] = EI [ 4. 63 -9 ::](d) [S] = EI [

463 .9 :6]


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43. 46. Which one of the following is relevant toActivity on Node (AON) ?

9The above figure indicates a project; network;the number at each activity represents itsnormal duration in days. The critical path isalorig(a ) 1 - 2 - 3 - 6 - 7 - 8(b) 1 - 2 - 4 - 5 - 7 - 8(c) 1 - 2 - 3 - 5 - 7 - 8(d) 1 - 2 - 4 .:.. 6 - 7 - 8

5m -I

C

T4m147.

The RC slab, simply supported on all edges asin above figure, is subjected to a total UDL of12 kN/m2. The maximum shear force I unit 48.length along the edge 'BC'is(a) 16 kN(b ) 12 kN(c ) . 8 kN(d) 30 kN

45. Consider. the following statements about theair entraining admixture in concrete:1. Improve workability2. Improve durability3. Reduce segregation during placing4. Decrease concrete densityWhich of the above statements ar e correct ?(a ) 1, 2, 3 and 4(b)' 1 and 2 only(c) 2 and 3 only(d) 3 and 4 only

Q-GUG-K-OFA ( 10 - A )

(a) Dummy activities may be many(b) There will be no dummy activities

It is used for quite complex project(d) It is easier to associate with time flowof activities

Consider the following activities1.2.3.

Pouring of concreteErection of formworkCuring of concrete

4. Removal of formworkWhat is the correct sequence on a network ofthese activities?(a ) 1-2-3-4(b ) 2 - 1 - 4 - 3(c) 2 - 1 - 3 - 4(d) 1 - 3 - 2 - 4

A solid circular shaft subjected to a torqueT produces maximum shear stress fs' whichis the maximum principal value in themateriai. The corresponding diameter' of theshaft should be

(a)

(b )

(c)

Cd)

vn . fS16.TV2 T3 --1t. fs3. .~ 6.T.fs3 --6.T

1t fs


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49.

50..

50kN

21E b:x==xp:====:::o::J D 110 kN/mI , - - - - 5 m ---->1.1The distribution factors for members AE andAC of th e box section are(a) 05 and 05(b) 06 and 0'4(e) 0,25 and 075(d) 1 and zeroA steel beam is replaced by a correspondingaluminium beam of same ' c r o s s ~ s e c t i o n a lshape and dimensions, and is subjected tosame loading. The maximum bending stresswill(a) Be unaltered(b) Increase

52. . Consider th e following statements:

53 .

Admixtures are added to concrete to1. Increase its strength,2, Reduce heat of hydration,3,4.

Delay th e setting of cement,Reduce watercement ratio.Which of th e above statements islare correct?

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

A beam of symmetrical I-section, made of.structural steel has an overall depth of300 mm. If the flange stresses developedat the top and bottom of the beam are1200 . kg/cm2 and 300 kg/cm2 respectively,then the depth of neutral axis from the topof the beam would be(a) 250 mm(b) 240 mm(c) 200 mm

(c) Decrease (d) 180 mm(d) Vary in proportion to their modulus ofelasticity 54. Consider the following statements :

51. A building contractor discovers from his,record that in th e last 200 slab castings hismixer machine broke down 21 times. Duringeach breakdown, he had to pay on an averageabout Rs, 2,500 fur idle labour. A standbymixer machine, if hired on the day of slabcasting, would cost him Rs. 200 per day. Theexpected loss is more than th e mitigationexpense of hiring the mixer by(a) Rs, 15150(b) Rs, 241,50(e) Rs, 262,50(d) Rs. 283,50


1. Strength of concrete cube is invcrselyproportional to water-cement ratio,

2. A rich concrete mix gives a higherstrength than a lean concrete mix sinceit has more cement content.

3. Shrinkage cracks on concrete surfaceare due to excess water in mix.

Which of th e above statements islare correct ?(a) 1, 2 and 3(b) 1 and 2 only(e) 2 only(d) 2 an d 3 only


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55; The load carrying capacity of a column 58.designed by working stress method is 500 kN.The ultimate collapse load of the .column is(a) 500 kN

. (b) 6625 kN(c) 750 kN(d) 1100 kN

56. Consider th e following statements:1.

2.The crushing strength of concrete is. fully governed by water-cement ratio.Vibration has no effect on strength ofconcrete at high water-cement ratios.

3. Workability of concrete is affected byimproper grading of aggregates.

Which of the above statements is/are correct?(a) 1, 2 and 3(b) 2 and 3 only(c) 2 only(d) 3 only

57. Consider the following statements regardingthe slope of cost-time curve:1. It is given by difference between normal

cost and crash cost divided by crashtime.2. It is given

cost anddifferenceby difference between crashnormal cost divided by

between crash time andnormal time.

3.

4.It is given by difference of crash costand normal cost divided by normal time.It is given by crash cost divided bycrash time.

Which of the above statements is/are correct ?(a) 1 only(b) 2 and 3(c) 2 only(d) 3 and 4

59.

60.


,

I f P is the percentage of water required fordetermination of normal consistency ofcement, then percentage of water to beadded for determination of initial settingtime is(a) 070 P(b) 075 P(c) 080 P(d) 085 P

Consider the following statements in workbreakdown structure :1. It is a graphical representation of entire

programme.2. The Top-Down approach to planning isadopted.3. The Down-Top approach to planning isadopted.4. I t is suitable for complex projects.Which of the above statements is/are correct?(a) 1 only(b) 2 and 4(c) 3 and 4(d) 4 onlyConsider the following statements :Entrainment of air in concrete is done so as to1.2.3.

Increase the workability.Increase the strength.Increase th e resistance to freezing andthawing.

Which of th e above statements is/are correct?(a) 1, 2 and 3(b) 1 only(c) 1 and 3 ouly(d) 3 only


13/24

61. Consider th e following statements: 65.1. In work-breakdown structure top-down

approach is adopted.2. Bar-chart depicts interdependencies ofactivities.3. Controlling can be better achieved in

milestone chart.Which of the above statements are correct?(a) 1 and 3 only(b) 1 and 2 only(c) .2 and 3 only(d) I, 2 and 3 66.

62.4kN-m( A

4kN-m 4kN-mC B )

~ - 2 m - - ~ ' ~ I ' - - - m - - 1A simply supported beam is loaded as in 67 .figure. The bending moment at C is

63.

(a) 4 kN-m (Sagging)(b) 4 kN-m (Hogging)(c) 8 kN-m (Sagging)(d) ZeroI f the Euler load for a steel column is 1000 kNand crushing load is 1500 kN , th e Rankineload is equal to(a) 2500 kN(b) 1500 kN(c) 1000 kN(d) 600 kN .

64. A simply supported beam of T-section issubjected to a uniformly distributed loadacting vertically downward. Its neutral axis islocated at 25 mm from th e top of the flangeand the total depth of the section is 100 mm.The ratio of maximum 'tensile stress tomaximum compressive stress in the beam is(a ) 20(b ) 25(c)(d) 40

68.

A two-dimensional stress system ha s likestresses "x = 100 N/mm2 and cry = 200 N/mm2 .in two mutually perpendicular directions. Thex, y co-ordinates of the centre of th e Mohr'scircle are(a) (0, 150)(b) ( l S ~ , 0)(c) ( - 50, 0)(d) (50, 0)A cement ba g contains 0035 cubic meter ofcement by volume. How many bags will onetonne of cement comprise?(a) 16(b ) 17(c) 18(d) 20Consider th e following statements :1. . Total float can affect all activities in the

chain.2. Free float. can affect only the preceding

activities.3. Independent float affects only th e

particular concerned activity.Which of the above statements is/are correct?(a) 1 only(b) 1 and 2 only(c) 2 and 3 only(d) 1,2 and 3Consider the following statements:1. Cambium layer is between sapwood andheartwood.2. Heartwood is otherwise termed asdeadwood.3. Timber used for construction is obtainedfrom heartwood.Which of the above statements islare correct?(a) 1, 2 and 3(b) 2 and 3 only(c) 1 and 2 only(d) 2 only

Q-G UG-K-DFA t 13 - A )


14/24

.._

69. Consider the following statements: 72.

70.

1. The resources are considered to beunlimited.

2. The resources are considered to belimited.3. The start times of some of the activities

are so shifted within their avaUablefloats that the uniform demand iscreated for the resources.

Which of the above statements islare correct?(a) 1 only(b) 1, 2 and 3(c) 2 and 3 only(d) 1 and 3 onlyJ

~ 2 L

B r25kN,I, 3L ,A prismatic bar ABC is subjected to an axialload of 25 kN; the reactions RA and RC willbe(a) RA = - 10 kN and RC = - 15 kN(b) RA =10 kN and Re = - 35 kN(c) RA = - 15 kN and Re = - 10 kN(d) RA = 15 kN and Re = - 40 kN

73_

74.

71. The capacity of a singleISA 100 x 100 x 10 mm as tension memberconnected by one leg only using 6 rivets of 75.20 mm diameter is(a) 333 kN(b) 253 kN(c) 238 kN(d) 210 kNThe allowable stress is 150 N/mm2.


Consider the following statements :1. Strength of brick masonry is influencedby type of mortar.2. Brick masonry with lime mortar achievesfull strength earlier than cement mortarmasonry.3. Mortar strength decides the strength of

masonry.Which of the above statements is/are correct?(a) 1, 2 and 3(b) lonly(c) 1 and 3 only(d) . 3 onlyA single-acting reciprocating pump has astroke of 30 em, speed of 115 rpm and a pistonof 30 em diameter. It discharges . 39 I.p.s.through a height of 15 m _ The slip of thepump is(a ) 28%(b) 32%(c) 36%(d) 40%Consider the following statements for a heamof rectangular cross,section . and uniformflexural rigidity EI subjected to pure bending:I. The bending stresses have the maximum

magnitude at the top and bottom of thecross-section.

2. The bending stresses vary linearlythrough the depth of the cross-section.3. The bending stresses vary parabolicallythrough the depth of the cross-section.

Which of the above statements islare correct ?(a) 1, 2 and 3(b) 1 only(c) 2 only(d) 1 and 2 onlyIf the load acting on a commonly conventionalsized RC column increases continuously fromzero to higher magnitudes, the magnitude ofthe uniaxial ultimate moment that can beallowed on th e column(a) Increases(b) Decreases(c) Increases and then decreases(d) Remains constant


15/24

76. In ' RCC beams, as the percentage areas of 81.tensile steel increases

The correct statement in respect ,of acentrifugal pump is

77.

78.

(a) Depth of neutral axis increases(b) Depth of neutral axis decreases ,

.. (c) Depth of neutral axis does no t change(d) Lever ar m increasesThe average compressive strength of a burntclay brick is less than 12,5 N/mm2. Theallowable rating of efflorescence is(a) Moderate(b) Serious(c) Heavy(d) ZeroTwo beams carrying identical loads, simplysupported, are having same depth but beam A 82.has double th e width as compared to that ofbeam B. The ratio of the strength of beam A tothat of beam B is

12(a )

(b ) 14(c) , 2(d) 4

(a)

(b )

(c)

The discharge varies in ' directproportion to speed as also square of th ediameterThe head varies as the square of th espeed as also of the square of th ediameterThe discharge varies inproportion to speed 'as also thethe diaineter '

inversecube of '(d) The power varies as the head and

square of the diameter

Consider th e following statements :L Bricks lose their strength by 25% when

soaked in water. '2. Minimum crushlng strength of brick in, buildings should be 35 kg/cm'23. The size of modular type bricks is20 em x 10 em x 10 em including .

mortar thickness.Which of th e above statements are correct?(a) 1,2 and 3

79. Shear span is defined as th e zon.e where(a) Bending moment is zero

(b)(c)

1 and 2 only1 and 3 only

80.

(b) Shear force is zero(c) Shear force is constant(d) Bending moment is constantIf the hinged end of a propped cantilever ofspan L settles by an amount Ii, then therotation of the hinged end will be(a )

(b )

(c)

(d)

oL20L3 1i2 L4/)3L

(d) 2 and 3 only83. The limit of proportionality in the materiaI of

, a structural steel member, when subjected tosimple tension, 'is 280 N/.rnm2 The principalstresses in 'the member are "] = 122 N/mm2(Tensile) and "2 = 60 N/mm2 (Compressive).

= 03. According to maximum strain theory,the factor of safety 'is(a ) 2'5(b) 1'5(e) 2(d ) 3

QGUG-K-DFA ( 15 - A )


16/24

84.

85.

86.

~ 1 / 2Am IWhat is thebeam shown?(a )

(b)

(e)

(d)

oPI33 EIPI3

24EIPI3

48 EI

Pt 1/2 -I~ CIBdeflection at the hinge for the

A belt designated as Hex bolt M 16 x 70 NLwill have(a) Diameter of 16 mm(b) Diameter of 70 mm(e) Length of 16 mm(d) Cross-sectional area of 16 x 70 cm2

In the limit state method, balanced designof a reinforced concrete beam gives(a) Smallest concrete section an d maximum

area of reinforcement

(b) Largest concrete section and maximumarea of reinforcement

(e) Smallest concrete section and minimum.area of reinforcement

(d) Largest concrete section and minimumarea of reinforcement

87. 200 "nD A

200 200

200A square element is subjected to principalstresses in N/mm2 as in figure. The intensityof normal stress "n ?n plane BD is(a) 200J2(b) 100(c) 200(d) 0

88. A crawler-tractor weighs 9 ton and arubber-tyred tractor capable of exerting thesame maximum drawbar pull weighs 75 ton.65% of weight of the latter is carried by thetwo driving wheels. Tractive coefficient forcrawler track and rubber tyre is respectively048 and 090. Which tractor is more suitable

89.

for use where the running surface isconcrete?(a) Crawler-tractor(b) Rubber-tyred tractor(c) Either(d) NeitherThe ;>dvantage in using plywood is that the(a) Tensile strength is equal In alldirections(b) Higher tensile strength in longerdirection(c) Higher tensile strength in shorler

direction"(d) Lower tensile strength In longer

direction.

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90. Consider the following statements:If there is a state of pure shear T at a pointthen1. The Mohr's circle is tangential to they-axis.2.

3.

The centre of the Mohr's circle coincideswith th e origin.Unlike principal stresses are eachnumerically equal to T.

4. Principal stresses are like.Which of the above statements is/are correct ?(a) 1 only(b) 1 and 2(c) 2 and 3(d) 3 and 4

92.

93 .

91. 2P

A T 94.L45 ' 45' 1

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96.

97.

cr A

cr cr

A point in two-dimensional stress statesubjected to biaxial stress is shown in figure.What is the normal stress acting on the planeAB ?(a) Zero(b) cr(c) (J cos2 e(d) (J sin e. cosO

PC15 m

5m 7r,r 8m 7rA three-hinged symmetrical arch is loaded asshown in figure. Which one of the following isthe magnitude of th e correct horizontalthrust?(a) ~ p3(b) P(c) ~ p4(d) ~ p8

98. Which one of th e following statements iscorrect as regards tensile strength of wood .?(a). Minimum in the direction parallel to the

grains(b) Maximum in the direction parallel to the

grains(c) Maximum in the direction across the

grains(d) Same in all directions

99. Consider th e following characteristics. regarding timber1. Stronger variety2. Ability to take very smooth finish3. Toughness4. Difficult to seasonWhich of the above characteristics is/areessential for timber to be used as beams?(a) 1 only(b) 2 and.3(c) 3 and 4(d) 1 and 3

100. A unit of equipment costs Rs. 25 Lakh andhas a .life of 5 years with no salvage value.The average annual cost of this equipmentbased on straight-line depreciation is(a) Rs. 5 Lakh(b) Rs. 10 Lakh(c) Rs. 15 Lakh(d) Rs. 20 Lakh



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Directions : Each of the next twenty (20) itemsconsists 'of two statements, one 'labelled as the'Assertion (AYand the other as 'Reason (RY. You areto examine these two statements carefully and selectthe answers to these items using the codes givenbelow:

Codes:(a) Both A and R are individually true and

R is the correct explanation of A(b) Both A and R are individually true but

R is not the correct explanation of A(c) A is true but R is .false(d) A is false but R is true

101. Assertion (A) : A hollow circular shaft ha smore power transmittingcapacity than a solid shaft ofsame material and same

Reason m) :

102. Assertion (AJ :

Reason (R):

103. Assertion (A) :Reason (R) :

weight per unit lenb


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1l0. Assertwn (AJ: In a helically reinforced 116. Assertion (AJ :concrete column, the concrete The probability of completionof a multi-path project at the

expected project completionduration is 50%.

core is subjected to triarialstate of stress.

Reason (RJ : Helically reinforced concretecolumns are very much Reason (RJ : The standard deviate for thecritical path duration is zero.uitable for earthquake

resistant structures.l l i . Assertion (AJ: In the case of mild steel, the

tensile strength (expressed aspe r unit area) of smallerdiameter bars are more thanthat oflarger diameter bars.Reason (RJ : In the case of smaller diametermild steel bars, the ratio ofouter hard core to total area(outer hard core + inner softcore) is more.

112. As;el'tion (AJ: The behaviour of an

Reason (RJ:

over-reinforced beam is moreductile than that ofunder-reinforced beam.Over-reinforced beam containsmore steel and steel is moreductile than concrete.

117. Assertion (AJ: In the analysis of staticallydeterminate planar trusses bythe method of joints, not morethan two unknown ba r forcescan be determined.

Reason (RJ : There are only two equationsof force equilibrium availablefor a co-planar concurrentsystem.

118. Assertion (AJ: A drag line is a suitableequipment for excavating ordigging earth and depositing iton nearby bank.

Reason (RJ : In drag-line, there is no need ofa separate hauling unit.

113. Assertion (AJ: Activity-on-nodeeliminates th e useactivities.

network 119. Assertion (AJ :of dummy

Mueller - Breslau principle isa most widely used method to

Reason (RJ: It is self-sufficient as itcontains all activity times onthe nodes itself.114. Assertion (AJ: A 'dummy' job is assigned

'zero' time to perform.Reason (R) : It is used mainly to specifyprecedence relationship.

115. Assertion (AJ: The time-grid diagramfacilitates to readout the floatfor any activity by inspectingthe diagram.

Reason (RJ : In the time-grid diagram,floats are represented bybroken horizontal lines asappropriate.

Reason (RJ :

determine qualitativeinfluence lines m anindeterminate structure.The determination of thequalitative influence lines isoften of great value I I Iascertaining the most severestresses at specified sections ofa structure.

120. Assertion (AJ: Losses in prestress inpre-tensioned beams are morethan the l o s se s ' I I Ipost-tensioned beams.

Reason (RJ : This is partially due to theeffect of elastic shortening.



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. SPACE FOR ROUGH WORK

r



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Engg Services Civil Engineering Objective Paper 1 2010