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Sixtfi Scmester B.E. Degrc.Heat and Mass Transfer

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a. Srare the laws goremins lhEe basic.ndes olheatt.dnstcr.b. Wnle lhe 3 D hert conduction eqotion r Crnesian co-ordinale sysretu.

Note.l.A ieo FIt Efit tltestiors, s.letli'tgat t 6t Two quenions l/o", ea.h part.

2. Usz ofh.at lru,sler data hant book ad steah tabt.s

.. A tunra.e has a oomposite $allcotrstNctcd ol a ftfiacrory nalerial for lhc tnside layer andxn insulali4 marenal on n\eoutside.The loral w! lhicknc$ n tjoirdlo 60 cm.Ihe neblcfraeralurc orthd gases wnhin lhe tumre is 850t, $e exrenrt ambienr lemperxtue nlo'C rnd L\e inrerhce reinperarur is 500t. The thetuat conduc iries of rstiacroN andn.rknp1.e.rl.- \\ ' f.noul$i, I tt...o|btrFd u-.1 ,..o herr'.l: b) .ot., .on no rJi.o l.r.eer. rF". J,100 \\ ,

^".do-q€no.'..de6.'to r,nd rro\p.er rn\\.n ^.1di) Therequieddrickrc$.leachmdrcri0l.

ii) Thcrate ofh.ar loss ro ann.stheE iskwmr.iii)The Icnrperatlrq ollhe eitenal and intemrl$daces.

Derive an expEssion tbr cnrlcal rhicknes or6utrlion tor a clrindcr., ... ru' t.o\.. rJ i ,ua'ron....r-r..rl,te\q'..,n1.r.i,pp.,Find the rmountofhcrr hnsfered lnough an ircn fin ofdrickncs oa5and $idrh 100 cm. Also. dere.nine lhe temperarft dillirence -B'ar rhcatnospheric reoperatm o, 23.C md hase remperdure ot iin toKr, =50 wrm-K, h = lO w/m:-K.

a DclineBiotnumberanJerpLlinnssigninca.ce, (02 \lrrrtb Dcrive an exDLession lbr$e instmhncous and t rathearno\yinrcmsotdeproductofBiol

nunrbera.d Fouier nufrbei is on. dimensioml txnsient heat.ondkii.nc Aluninlum md ot5.ur diamerer and I tuere lona ar 200"C is suddenty erposed ro a

co.ie.riveovinnncnlarTo.C.Catcularetherempemruieotandiusotlcmandhearlonper mclre lerglh ol$e md I trmuis atier re cyliider is exposed ro lhe environDrcnr -propenies orAr p = 27i]i] kEmr. C, =g(]()rKG K, K = 2tj }r/jn K. h = 500 rvimr-K,! = 3.5x10 tnlr/s.

'.'gdtr.en.ion r.v..dc-\c" .\pr( o. rt,.'nq \ts.e' n_ro.r q ol,.ua b\U L J roe or i -., .o \n.' I

\pieor crJr, _r. -n"dr .0rr t...0c..f,\( totrSiFoi. .,.-,r o.rLJ.o. \li.c lo.! \ h.'.e,0.tror.n. r.eo, rx",pc..i. Ei\,\."0n..rinenaric!isd.osiryolt0- n:/s..a;utar:i) Soutrdary laycrrhickness al the iriddte.fpklc.n) She0r$mss !llle Diddle orplare ]ndili)rri.rion d s or oncsidcollhe plare

lsl), ,0M863

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l0t\tE63

T\yo horizonl.l slem pipos laving l00 rm md ]00 nm are so lald irr i boiler house dr.rrhe ,nulual heal hnnir may be neEl.dcd The surlace tenpeBture oi each ol rhc scanlpiDesis475C lfthe lempeatuE olthe anrbient h r5!c. calc(ldc thc mro.l herr!"nslirc.-e[]c1ent md hear losscs pclnetrc lctr8rh olthoplpes

Deine slanron numberand explain irs physical signlfi.ance. (0,llerk,

fr .'h"

Anara rchaemrure 0120". ilo*s overa flal plaleat I ms. The plat is 30chx25.ft Fnrdlhe heal los per hour llair llow n paraliel 1o 50 cnr side ofthe p ale. lf25 cm sidc is keDtpacilel to the an noN, Nhar uill be rh. erftrt on hcal lBnsler? TempemruE ollhe plale is100'C. (o3}I!rkr)

a. Deile expLe$ion for IMTD olparllcl llor heal exch -qer. Srale me asunprionsmade. (r0r!*o

b A heat exchdEer is used loi coolinC oil xl 130"C mins water avaihbl. al 25'C. The nrassflow nles oloil d ualerare2.5 kss and 1.2 kgh Espedively.llrhe bear crchxngo h,sl6 nrr area avlilobLe for heat tansler. Calculale tlE oulld renpentrcs.l oit anJ rxlu tu!

ii) Counrer uov amnsemenr.Take Cp," I =l900J]KO K, Cp,,.,.., =4184

a Explxi. rhe influence olthe non-condcnsable gdses in condcnsalion proless (0.1\llrlnb. Dilrercnliale benveen lhe mechlnnm olfilnsise td dropwisc .onde.in1nn1. ExpLain \rhy

drop...ecotrder.diotr'prefenedo\er lln."-e-ro" . o'c. A meral-.lid heatng elenenr ol l0 hn diaherer dd olcmissniry 0.r2 is submer-gcd in r

war$barh honzonrally. llrhc sunb.c rcnpcrarurc ofrhe meral is 260t undcr nudv boilin!condiiions, csalculate the po$er dissDalloi per unn len8dr ollhc hctucr. ArnLme ihrt rhe*alers exposed to atmosphen. pres re and E at unilom tcmpemxrc.

a. Explain biely dre conceptofblackbody.b Stute dnd expla,n ihe tollovi.glarvs:

i) Stelan B.lund la$.

iy) wiens .tisplaccmcnr la$.c. C.lcnlaE rhc ner mdi.m hcxr crhaiee per tur arta for lwo lmee parallel

renlrreBtL'Es o1427'C md 2lt Especlively. Takc € ,brhol and co planes to06 6!e.tively.1la po lish ed aluninium sh ie ld is placed betReen rhem, find rlreredudidn in rhe herttm.sler giren E tur shield 0.04.

t0ME51

Sixth Semestcr B.E. Dcsree Examination. Dec.20l:l/JaD.2015Compuler lntegrated Manufacturing

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\ote. Answr a,t FlyLfttt q@stio s.MIe.t satteast

IIBLAI x Detine Cn{ Explain hoq lleiible rromrlion N

Nrar Marhs:100

Two qnzstio,\ frot" cact pot.

difcrcnliared Eom prolmmmablcautomlrion. (05 Nkrkg

b DelincnranuiacturinC lead rine and opcr0!.n ride RepEsen hemnarhqnarica y

c A, avc*ge or 10 neR orde6 h saned rhroleh a cerain ra""" ",.h

,.""thtt;,ti1Hlco.sisE of an ave.rec ?5 plns ro be pb.essed thrcuqh 3 nachmes in rhe facroN Thc'per".or" c e.r..t'trcro - tt"' ..:rr D t jno

ooe* .o . , , e .r. , e" .,b(l0 hh and the EquiEd setup he r 5h6 TbeE wffe ?l] *llkslaltons in rhe fr.tory Theplanloperalcs l75hL/mo0th. Derermine i) \'lanuhctunng lead rinre ii) Planr lapaliryiirUrlzdrion r\) \orkrnprures i) Tlrraro.

2 a. Whardo trou mdeNlad by aurotured fl.lv linelti$fie vaious syDrbols used toftpEsentan auroftared io* tine. (06rkrk,

b. Dl iarenti rrc be Neen In line dd Rot.ryconfigunrion srslens. (06rfktc. Whar aE Tftnsllr mechmisins: [tar aE ns r]pesl Wnh a neal skerh, c\ptlii ceneva

Rheel lmnsft r mcchonism.

Ditirentirle beueen UpprBouid Approach and Lo*er BouDd Appnach.Bnclll, eaplain rhe conceprol nrantral Asembly liDe, wirh x skelch.A tanslermachine hr. six ndlons thar lun(ion as fir lors I

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In addilion, Ttusler Time is 0.13 frii A\erage dosnrime peroccunen.e = 8 tuin. Sol!erhe pmblem rssurnDrg lhat uhen s,ridn hreakdown o(us. the *orkpans nusl beremo\ed. Derennhe :,) Proponior Doe.line ii) Avemge a uat prodrction atc

(r(,11rrk,

a. Dolinelhc aollosingrcnDs: i) Mininuh Ddonalwork rlerert ii) tsalancc dclav'', , ..k'ae i., Pr eoe. ,g'{ Os!", \b.TherablebelowshowsrheeleDUrriine.ndprD.cdencercl.iionshjps.C!cknnreist()min.

Connrtrd ihc pr1edcn.. dirgaD. Dercnnine rhe number ot sorkrnlions Equired bpmc.s all rhc Lyo eleDr..s Li* rdked posnional \veighr meilod. Ako detennrne

,] s 93 6 6 l

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i0ME6t

Wirh near sketches, explaln Honzontaland Venical escrpenrenl d placementdeliccs.(03 \rrtu)

Wnat arc Auiomared Cuidcd vehicles? List $e qres oIACV's wnte a nole on yehiclegriddce rechnologyrdopied in Acv\. o, rrr*,

DefiDe CAPP. \{nh block dias8m, explain vaianttype ofCAPP system. (03v.*,Bneflyexplain the tundandbl concepls ofMRP. (06vr*r)whatis Capacity ?lanning? Explain how capacity planning is gmerally acmmplished.

(06vr*r)

a. What are pEpaolory tunctions? Wite d nore on cuter ndius compensalim. (06nrrk)b. Difercntiate beNen Absolute and IncEnenlal co oidinare syrrem. (04 }lr*,c. ThedesiEd conponenl paft is show inng. Q7G). wit a miuat pait ptugrmne ro tom

the ptufile ofde pan shoNn. Use Rough Tuming Cycle dd Finislr cycle. Assume suitablepDcesspammeles 00ur*,

FieQT(c)

a. Wnh a neat skerch, explain sphen.al robot conliguElion.b. whal are End ctrcdon? Explain lhe laiious g,pes ofgrippes available.c Definc tne followi.g

J Rc.o.r.'o- iir Reper,brl u i i, 'arloao.

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l0MFi62

Silrh Scmerrer a.E. Degree Examin.tion. Dcc.20l.l Jan.20l5Design of Machine Elements - ll

Mlx' Marksrl00\otc:1. A,stuet Ftt E lutl rluestiohs, seledits

at t.ast rwo q".!1io s l,oh each patt7, Use oJdesian data ha d hook peu,ilka,3, t.hsi,s.!ata, ila rtua! be suhabb asettel.

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Fi!.e! (,)b A solid shali ol l2s mm diamder is to be prcscd inror slccliangcnhicnhBsmouBide

diameler!f150 mDr and l.ngrh.l100 mnr TdleE=210GPa,v 0:l Ddtrtuine.il PrcsuEheiwe.i htrli,trd\h,ltii) PropersizeofboE,ifma\inunsresdoesnotexreed 160\{Paiii) Force ftquned to press rhe pans 1!gelher. A*ume p = 0 I 6rpress litiy) Torquc capacny olprqss ft.

Sele.iaV-beldivelo rmrnn l8 k$ al1500 rpnr romofierpulieyt onai750Iptu Thedia ofstuallerpulley is 100 hft. The cenh dnkice is 2lirnes the diaherfioll.rgcr p01lcy.

O0[Isrk,Sclcdanunberoltrieopesftqunedlobeusedsithadrumdiareleiotl to.r.r A loadof30 kN h ro be lined by:5 inn dimcrsr 6x7tupes fotu a heighr 01450 m.rcr. A\elociry of 15 mfcc h b bc raincd in l0 sccond. A$trme the skip seighr ro bc 30% ol

DeEmine de dinrensions ol I secion, sholri ln Flg. Qlnreses art numcncally equal nputo bending, gilen b. +b l

la) ln whicn maxinun fibre

= 120 m (r0 rlllrk,

-f

loidcqacayard lircrorolsllcly 016. noMlrk,

a. A nee end ola losion spring doflecc through 60'ehen subjecred ro r lorquc oi6 \-m.The rllowable nrcss in de spinsmalerlaln 400 MPa and rc spnDs index is 6. Dereminede $neduDEterandrh.nuD$erof.lG irc n:ms. Take ! = 206.8xl()rNrmmi

(03^rranb. A BcLlcville sprins Dade ilm 5 nnn lhick seel sheei halnlc otrlside diarnetcr r50 mm and

inside dimeler 70 m. The heient oi lhe spitrs is l0 nrm. UsinC y = 01,E= 20,10'MPa. Find i) Ihe denectiom ofspitrg. ii) Ihe load the sping car car],ii) Stess ai dre ouiercdselimn dr ma\ nufnrc$afihcimcrcdaecro450MP!. o,Nh[,

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l0ME62Desig x ran of slrur gear to trmsmit 40 kW al 4000 lpm ofpinion ro rhe eear 800 DmSclc.l Ch6m,un Nickclrrcellorbolh gears. Assume pinion rc.fi as 20 and seni.e tucrol!s l.5 Derenine dynamic ldad. \ver loid and reco,nmend BllN vahes. A$ume c=2011IDIA 2.1rcclh.nsr neel gea! pin,on (6, = 51.r MPr) driles a high gmd! Cl lcr hrling(or. = 3l \4Pa) 50 rcelh Th. rcclh rre 20'tulldeprh inrolute in lhe noanxl plane. Thc helix

angle ir 45' Nomal module N 3 hh Frd d1c \aii powerrh can be lm$ited by dresegeaE ara pinion spccd ol5 00 Am. Asume liceNidrh 6 l01ifres nomrlmldule md scantlubricllion c{ =l25. lmlxrl,

Deng! a pxi olnirrd bevel geaN ro rmnsnn 9 hW ,t 1200 rpm. The pnch lnre \eloritj olgeris mtexceed l5 n sec (t2 rrarks)A hnrdened sleel wonn al 1250 rpm trrnhits ponrr ro a phosphor btunze gear *irh ,lmisfrnsion iatio ofl:o r l. The .enlre dnldce n 200 mnr Delennnre the inpur po\cr

ldpeiD lsrme0 .t: FDT

Desisn a cone clulch ro ransmir 15 klv at 1200 am. Asuhe semi cone anllc 0; 12 5"..o cllicienr olftirtion for lining 0.,1and ! =0 2 MPa. (0!yrrLtA single bmJ brake shoM in Fis Q6 (b) a ro bc desisned b sro, 6. rolation ola shanrmnsmitrins ! pouer oi45 LW al a raled speed ols00 IIm Selectng suirxble nalenals

i) Dinensons ofr.langularctuss ecnon olbmd.il) Dimensions olrccr.igular.ro* secrion oibEk letr (Asn'he hr = I b,)iii) Diafr eler oltuIcNn pin.Assune i, = 1.5 dp. bexring $ress d6: l0 MPa

a. A tuU j.umalbcanreolle.!r[ 100.m dot 2 5 kN .r 600 +in \VhI viscosil) oiltmpenture ro 60!c . The tuoh tenpdrrure

6. Dcicmlne de po$er lo$ lor a Pcrofbexriig Iradial .leannce n 0.05 min. Speed o1{hejoumaland betri.Aop.nliig lempeuruF h60!C.

lnciouhlldidmeler.lS0 mm sufn.ns I loadshould be used i. li'nil ri. beding surliccis 20'C and rhc clearaice iatl. k 0 001 R.

($ riG)00 mu in dian.rf md 150 nm 1on8. Theis 1000 rpn. The lrbncating oil is SAI10

01!I!rk,a. Listard cxtlain the fundions ofparrs olinrenal conbunion ensine 0{ rkrk,b. Design a can ftn tunk i_vpe pni.n tn. lbur (rcle inrcna] combuslion enainc tnr rhe

lollovins dila: Cylirder borc = 150 nh, Stoke = 200 mm. Indurrd ,nean cJlcclivetre$ut = 6 br. Iuel consumption 4 kg,tr,Maximungaspresurc=5 MPa.Higher.aloi6c rrluc.ftucl= 4100 K.,/kg. Speed olcngine = 600 Dr.Mcchani.al ctricien.y= 759'!. Allowable sre$ ior piston = l0 N,mnr:,A11o\able tmsile eies forpiston nng = 90 MPa,Allo*able bendif8 strcs in piston pin = 80 MPa

2.fl

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:;;:il.i\ ,/\>a,y l0ME6:l

B.E. Degrec Examinetion, Dec.20l:l/Jan.2015Finite Ele]nent Melhods

3-

24

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=4

Notet l. Atil'er FIVE fuu questions, kL.tiialeaslftro qt.sno sfota aLh Pan.

2.Mitshtpdata n, tuirablr be assut'c.l.

i ObrainaequilibriumequalioDsolalDelast(bodysubjecEdloabodylorce. (03Nl"rktb. Dn(ss the lypes olclcmenls based.nseoneq (06Nlirk,c Explai.lhe general dcscrilxion olfinnc clemenrmedrod (06M!rk,

Derire an expressio! loi Tolal porenrial enegy ol.ntraclion lorB and a poinl lbrceUsing Ralcilht Rirz nelbod lind a defledion oi a

$Lrj.cted ro r uniromny dislibured load orpi N/h

ehnicbody subjecred ro body loi.e.(031u!rk,

sirnply supporled b.xm ol lenBh L(r1nlsrk,

a Wilean inrerpolalion polynomirl tor lre.r, qu.dmic atrd cubicelenlcnr. 06lLrktb. Obtanr an expre$ion ror a nmin displ@emenr madx ora recrdetrlxrclement. (,ar*rld

a. Dercnnins the nodal dhplaceneDls, reachonr.and slre$es lor the t_ig Q'1 (x) usnrs pcnahy

alrlrmach Take E =ll0 GPr, Area=250mfr'. (lzvr*n

Fie Qa(b)

!!BI=-Er rind the shape lunctionsora2 D quadilateral quadrallc 19 nodcd) elcmcnib Wnh a skelch deine lso. Submd Strpcr pammelic elemenb

Find lhe nodal dGplacqnenl, sysleh shos. in rie. Q,1 (b). Txke(03Mr*s)

60 k^l

16D raq 159a' o.tzl^

5

a Oblain an erpie$ion tursrinne$ mafix oralrus etemenrt :,*Ul,*':*.n*a.i" i,,t'.'-ii,l,l,liiii ii"-..' ",.",

l0}IE64

ln rr

loadins shoM in Fig. Q? (b), delermineol rhe midpoinis ol lhe disdbuled

(0nvr r)rhc slores ar 2 and 3 and lheloxd. Trke E 200 CPa.

Fis.Q7(bl

r Dkcuss n\e denvation ofone dimensionxl hearmnsferin ihin nlms. (03 rh*,b. A conposile Nall co.sisls of3 m enah shoM in Fis. Q8 (b) The outci rctuperalure is

T" =20'C, dei.mine lhe lenpeEtuF dislriburion in lne sdl Co.vcdion hed tmslcrrakcs place at inaer sudace with T" =300"c Iakeh=25{i!rc,Area=lnr

4,t1

Fig. Q8 (b)

t0\tE65

Sixth Semestcr 8.tr. Degrcc . Dec.201.l/.1, n.201 sMechatronics & Microprocessor

\ntet Arswo FrE.fill qnestions, s?lztiitryat least Ill'O q znidl\ ftort ea.L Dar.

2

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PART Ax. Delirome.hatraDils Lislhe ad\anragesanddLaJranlaeesotmc.haronics, (0.1)k,t,b. hplantbricll) elemeDr ol.losed loo0 corrllsy(cn*irhacxajnpte. (0s vlrktc Ertllir \irh rie block diagmn. hoR a fticrcpro..n.r control s)-sem is used ro controtthc

iir.N.Cand erpolure in iD aurotu!. cameE.

b. \nG rtrd evlain non pcnunentnmsrel r\pe D( nolo^ $rh (h.r 1 ! JLlnnr.(10\l,rk,

r Definesignalcondrrring.$hdxerlrftcc$ilrfo.sigDatcond ionirg (0{\hrk,b E\plain balxncc mode ol*heat ione bridge od henc! deduc. rhe erp;snon rbr !Iu!c tnourpur\oluge. (rurrrd,c wirh Lrlock diagran. erplain dara lcquisirjon slner. (6rhrk,

fla.I:&J Terlo\ .. (.or pF

l0. ..e r\pr' \\D. OP \OP dd \\\D -q3.e. 1,1 .., blt dd.^

x. DeiDcrhe lollo\iirgrems: i) Hystrcsiscftdr ii) Accuialyh nhil is hall ellecl'l Ertlrin rhe prlrcipte othrtteIIed*trb rear skcrchc Exflain how seDsing is achic\ed by rn incrernentat oprc,l cncoder. qiirc ns

a Nhd is a acnrlol) Nrnre an! btrrnnpofi!trtsol rarc $ritclrcs aid e\plair

iii)ir)

.(=t

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2l

D

5

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141

(

i)

L wh ffe nncro-conrole6l Di:ringurh benyec. , micrc-ptucesor and micro cotrnoles

b E\pla,n \M a neatskerh. The rniennl tu.hneduc ol.tntet g.r, ,r,"r"n...rr"r.ll:ll::i3, Brc).-.0'.r r.G\.. 'o'J 1rn..or.."U .edD.30.(o \'"..ap.uJr r '.hrp1-,o8or. rti.,or.r, n n.^ n.,,,

:.:u l('o.i.t., .nnt.,n. .o I

r\ol.i"', lo! ! ..',..jr.no , r.tjcbhr,.0r"..L \t r rc ]i, 'r

,0arr oi\ p< ron rcd tj\ CpLDnr tr!trnh ben\een Nnu.rion.l.Le,nmchine.vctc dT $aE.

r0ME665

/.

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Sixth Semester B.E. Degree Examiraiion,Dcc.20l4lJan.2015Non - Traditional Machining

Tine I h,s. Nlax. Mafts:100

\otet Arstr.t ah! tlvEttll qkestior!, seLcturA a ean TWO.luesaions jioh each Pdtr

IA.BLI. L(l the mc.nvcnlional ma.hi rg pm.c$.s und.r Nchanical cnergy thcnnxl ard

cheni.rl ocrgy.alegorrDifiereDi{c bel\veen ...veilionrl (adnionil) and non trdilio.rl

.'. '',! ,l c.Lge. ' dd . d n 'gP.

orcl'" '11 r rl

Lisr oul rhc.onnnonly us.d !!$cs ii L$cr beamDxchining

!IB.L-EE\Ilail re principlc nEpsinvo\ed in cheDiral millins ro producc pockes and cotrrou6.

. ivake a conparison bcrye.n tidirionrl md ion rriditional nacirinincco$. pllc ion. scope, dx.hme tnre ,nJ limir ions.

a. \vhnl rre$etuvanhg.sanddBddvmlagerof USM1b \\'ith a iear rkelch, cxpbi'r the pnnciple sorlingofUS\'l

a. llorvdoeiASMdrllerlrohconrenrionals?ndbhnln8proleslb \\ihar aredreditircnll\pesolabiasivesused iD ASM?! Stut aid dxplaiii $c *orking a.d pnnciple orabra!r.lcl nrachlnins

o. lvhal arc rhe ad\dlages and dhadlanuecs olECI,l?b rvhrlfterhelacroGlholinnuencesoridalionoiECM1.. E\plam the principl. olclcct6 chemi.rl gnnding. rvilh a neal sketch.

Ln1otrr dre mai.rappli!oriotrsolCHM Furlher pscess applicarion relared ro nnproving tlE

n Nrm. son,e olrhe dictcdnc duid..o$nlonly used in LD\4. Name some oftheiool mateialnscd in [D]vr (06 rkrks)

b.\!I.r elhebxlcrequncnreirsolrhedielecticnuidusedinEDM? (0{uark,. Wilh trholp olDearskelch,cxtlxin \*e cu1 elecbical discharse nrachiDine. (r0Mri{t

a Extlair the brsi. p..ciple olPA,U 101\rr tb Unh aneal sketh.explili the *orki,ig.fPA-\1 Lin. rhc ldvanhacs and lin,naions ol

Pd\l p.occss (16\hrk,

\\ ' '- 1.. 1,oona" ,uo.r .'. nqlir r, .e!r.00 beail i I e.tu1 J( .

E.ol.' !' J,, .'. !l'.. 1...tuo B.".' 1 :.,' "g'ld i I o.' i,..d\"u.rSe. r) \r,rL.,