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T.J.instituteofTechnologyKarapakkam,Chennai96.

GE2111EngineeringGraphics(Commontoallbranches)(AfternoonBatch)

Exam:CATIITime:3hours

Date:06.12.2010Max.Marks:100Marks.Faculty:Mr.SakthikumarC

Instructions:1. Answerallthequestions.2. Useappropriatescaleifnecessary,tofitthesolutionwithinA3size.3. UseAngleofProjectionasFirstAngleforfreehandsketchingandrepresentit.

1.Ahexagonalprismofbaseside30mmandaxis80mmrestsonHPwithtwoof itscorners.Thebaseplane isperpendiculartoVPisinclinedat400toHP.Drawitsprojection.2.(a)Apyramidofheight75mmrestsonHPwith itsequilateraltrianglebase30mmwithoneof itsbaseedgeparallel tobothHP,VPand far fromVP. It iscutsbyasectionalplaneperpendicular toVPand inclinedat60degree toHPat thedistanceof20mm from theapex. Draw the sectional frontviewand true shapeof thesection.

(or)2.(b)Ahexagonalprismofside20mmandlength70mmrestsonHPwithitsaxisbeingverticalandoneedgeofitsbaseinclinedat150toVP.ThesolidiscutbyaplaneperpendiculartoVPandinclinedat400toHPandbisectstheaxisofthesolid.Drawtheprojectionofsolidandtrueshapeofthesection.3.(a)(i)Drawtheprojectionofthefollowingpointsonacommonreferenceline.Take40mmdistancebetweentheprojections. (05)

a) P,25mmaboveHPand30mmbehindVPb) Q,onbothHPandVPc) R,onVPand20mmbelowHPd) S,40mminfrontofVPand30mmbelowHPe) T,35mmbelowHPandbehindVP.

3.(a)(ii)AlineCD70mmlonghasitsendA,35mmaboveHPand30mminfrontofVP.Thetopviewandfrontviewhasalengthof45mmand60mmrespectively.Drawitsprojection. (15)

(or)3.(b)ThemidpointofthelineRS90mmlongis60mmaboveHPand50mminfrontofVP.Itisinclinedat300toHPand450toVP.Drawitsprojections.

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4.(a)Aconeofbaseradius20mmandheight70mmhasitsbaseontheground.It iscutbyaplanemakesanangleof450toVP,perpendiculartoHPandispassing15mmontheplanaxis.Drawthesectionalelevationandtrueshapeofthesection.

(or)4. (b)A thinpentagonal laminaof60mm longedges restsonHPwithoneof itscorners.Draw itsprojectionswhenthesurfaceofthelaminamakes450withHP.Thetopviewofthelinejoiningthecentreoftheplaneandthe

resting

corner

in

HP

is

inclined

at

30

0to

VP.

5.(a)Sketchbyfreehand,thefollowingviewsoftheobjectshowninFigure.

Thedimensioningisalsotobemarkedbyfreehand.a) ThefrontviewfromX,b) TheTopView,c) TheSideView,asviewedfromthesideavailableforview.

(or)5.(b)Sketchbyfreehand,thefollowingviewsoftheobjectshowninFigure.

Thedimensioningisalsotobemarkedbyfreehand.a) ThefrontviewfromX,b) TheTopView,c) TheSideViewfromY.

**********************************AlltheBest**********************************

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