:

USN IM72

Seventh Semester B.E. Degree Examination, Dec. 07 I Jan. 08,Operations M~nag,ement

Time: 3 hrs.Note: Ans;Ver'any FIVE[ull questions.

Max. .Marks: 100

1 a. Define operations management and draw the operations management system. showinginput and output model for an International Airport ,0 .. '. (10 Marks) ~~What is the frame work for managing operations'<Draw block diagram of foreecrchoicemodel for strategic-planningofo12erations~. . (10 Marks)

a. The BEP of the product occurs at a s'~le's income of Rs. 60;000 J:>utnormally the sales !l~income is"Rs. 90~000, the fixed cost being Rs. 50,000. A ne~ product involves an'ruJ)~rM}!additional cost of Rs.l 0,000 which has an increased P- V ratio of 20% and the sales income ";::-'-- .~increases to Rs. 1,20,000. What net profit does the new product yield? (10 Marks)

b. Write short notes on any two :--- ..i) Role of models in operations management.ii) Qualitative forecasting techniques.iii) Manufacturing and service systems.

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...- ...•...,-.3 a. Following table give-; the annual shipment (tons) of welded tube by an alwninium producer'

to machinery manufacturers.

Shipment(toris) .Year

Use the least-square method to develop a linear trend equation for the data given.State the equation and forecast the shipment for 2002. (}OMarks)

b. Explain the various strategies to absorb demand fluctuations' with suitable example foreach strategy. (10 Marks)

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4 a. List and explain different costs associated with aggregate planning. (10 Marks)b. List and explain the guidelines to be observe'd while preparing aggregate planning .

......... ,. . . (10 Marks)

5 a'. Explain the.role of master production schedule in the. i~ter-mediate 'process plarining~dstate how it relates to other elements of an MRPsystem. .(10 Marks)

b. A manufacturer has the following information's on major productR.T production capacity: 260{}Unit/period . ,.. .o.r production Cost : Rs.12! unitInventory cost: Rs. 2 / unit /periodBack log cost: .Rs.5 / unit / period.Demand in units for periods 1, 2, 3-and 4 me 4000, 3200,.2000 and 2800 respectively.Assuming unlimited O.Tcapacity, develop a level output plan that yields zero inventory atthe end of 4th period. What.cost results from this plan'! '.' (10. Marks),

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6 a. Develop a tentative MPS for 10 weeks given-that the production run is 50 units, initialinventory is 40 units and buffer stock in 30 units.

(10 Marks)b. Following is the problem ofMRP on product ftee structure for end item 'X' is as follows:

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Week 1 2 3 4 5 6 7 8 9 10,Customer forecast - - 5 10 5 5 1-0 15 10 10Service.forecast - - 5 - 10 - - - 10 -Domestic orders 5 - 10 - 15 10 - - 10 -International orders 10 5 10 5 10 5 15 10 5 10

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assemble one 'X' ' ,ii) Determine the quantities of these components that will be required to assemble 200

'X"s. ' (10 Marks)

7 . a.... W,ith. the help of a block diagram explain.the 'elements of a scheduling system...... b. Write short notes on :'

i) Different types ofscheduling " ". iFii) Different priority rules of sequencing the jpbs..... . . -:(

(10 Marks)

(10 Marks)

'8 a: Determine the minimum elapsed time for completing the 2 jobs, The technologicalsequ~nce and the processing time in hours are given below:

......... "J6bI ~

Job II ~'A(2)B(4)

B(3)C(5)

C(4)A(3)

D(6)D(2) ,

, E(2)E(6)

(10 Marks)b. Find the best sequence that minimises the total elapsed time and idle time for all machines.

Given 5 books to be prepared which ~as ~Aiffere.ntoperations Ji~~ted below in hours.

,h vI~ . 'Ib~f" "c~ 7:N 8'

Book number 1 2 ·13 4 5Binding 5 6 12 3 4Finishing 8 10 16 7' 11Printing 4 918 6 5

_ (10 Marks)

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USN ITID O[]]]Seventh Semester H.E. Degree Examination, May / June. 08

Operations Management

IM72

.Time: 3 hrs. Max. Marks: 100Note: Answer anyFlVEfull questions.

1 a.. With the help of a schematic model explain the production system. (05 Marks)b. Define Material, Labour, Machine and capital productivities. Explain the major factors

affecting the improvement of these productivities. (07 Marks)c. Explain the ideas and contributions of the following personalities.

i} Adam Smith ii) F.W. Taylor iii) Frank Gilbreth iv) Henry Gantt. .(08 Marks)

2 a. Biltmore manufacturing company has developed a promising new product. The firm'smanagement faces. three choices. It can sell the idea for the new product to a company forRs 20,0'00/-, it can hire a consultant to study the market and then make a decision,.or it canmanufacture and market the product. If management decides to manufacture the productwithout a study, it figures there is only a 1 - in - 4 chance of its being successful. A

. product failure cost is Rs 1,00,0.0'01- and successful cost is Rs 5,00,00'01-. If managementdecides to hire a consultant to study the market, there is about 50' - 50 chance that a.favourable market will be found. If the study is unfavourable, management figures that itcan still sell the idea for Rs 12,0'00/-. If the study is favourable, it figures that. it can sellthe idea for Rs 30,0001-. But even if a favourable market is found, the chance of anultimately successful product is about 2 out of S. A successful product wiU return Rs4,90',0'00/- and a product failure cost is Rs 1,10,0'00/-. Even with a unfavourable study a

. successful product can be about one in every ten product introduction. Draw a decisiontree and state which alternative has the higher expected payoff. (12 Marks)

b. Distinguish between design capacity and system capacity with a neat block diagram.(08 Marks)

3 a. Explain the following qualitative forecasting methods.i) Delphi method ii) Executive opinion method. (06 Marks)

.... b... WayneConners-.the.plant manager of Aroma Drip Coffee Inc. is trying to plan cash,personnel and materials and supplies requirements for each quarter of next year. Thequarterly sales data for the past three years seem to reflect fairly the seasonal outputpattern that should be expected in the figure. If Wayne could estimate quarterly sales fornext year, the cash, personnel and materials and suppliers needs could be determined.

Quarterly Sales (thousands of Units)

4

Perform Regression AnalYSISto' determme quarterly seasonalized and deseasonalizedforecast for the fourth year. (14 Marks)

a. Explain active and passive strategies of aggregate planning. . . . (07 Marks)b. The aggregate demand fora paiht'mahufactUiirig'corrirJanfIs'shown below.

Year Q\ Q2 Q3 Q41 520 730 8_20 530' '.2 590 &10 900 c600

'" 65Q ·900 1000 650J....

Develop Levekized .capacIty and matching capacity plans WIth the following pertinentdata. - . .Working hours per s.hift- 8 hss ; Maximum machine and material capacity on one shift -1,00',000gallons ; Hiring cos.t- Rs 250/- ; Firingcost - Rs 300'1- ; Inventory carryingcost - Rs S.O/unit/yea.;; Workers pa){ - Rs 5.0. I hr labour standard- 2.311

Aworkers/gaHon. C13Marks)

10f2

-Working days. 62 63 63 62Period . 1 2

..,4J

. Demand (gallons} 40,000 57,500 55,000 52,500

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IM72,

·5 a. A company producing solar heaters has the following 'information about availableproduction capacity arid the demand forecast.

Production CapacityPeriod Regular Time (RT) Over Time (OT) Subcontract

I 900 350 6002 1000 350 6003 11ob 350 6004 700 350 600

Demand ForecastPeriod 1 2Units of demand . 700 1000 2000 1200

Availableinitial inventory = 200 units·; Desired final inventory = 150 units ; RegularTime cost/unit = Rs 125/- ; Overtime cost/unit = Rs 150i-; Subcontracting cost/unit =Rs 175/- ; lriventory cost/unit/period = Rs 25/-:Determine the optimum production levels and the total cost. (12 Marks)

b. Briefly explain MRP and CRP with block diagrams. . . (08 Mark<'. . .

6 a. Explain the key functions of Master Productionschedule." . (09 Marks)

b. Find the sequence that minimizes the total elapsed time in hours required to complete the.following jobs on the three machines A, Band C in the order ABC. ..

Job 1 2..,

4 5J

Machine A 8 10 6 7 11Machine B 5 . 6 2 3 4Machine C 4 9 8 6 5

Also find the make span time, idle time of the three machines and waiting time for all thejobs. (11 Marks)

7 a.With the help ofaneat sketch, explain forward and backward scheduling. (06 Marks)b. To ensure a smooth work flow \hrough the various stages, what are the activities to be

performed by a scheduling systera? .. (05 Marks). c.. The following table shows a set '~ffour jobs presently waiting at an enginelathe. Several

operations, including the one .it the engine lathe, remain to be done on each job.Determine the schedule by usi!g ·i) . C R rule ii) Least slack time ··per remainingoperation. Compare these schedules to those by FCFS, SPT, and EDD. (09 Marks'..

Job Operation time at Tlm~ remaining to No. of operations Shop . timeengine lathe (hrs) 'due date (days) remaining remaining (days)

I 2.3 .: . 15 10 6.12 10.5 10 2 7.83 6:2 20 : - 12 14.5

·4 ·15 ..6 .. .. .. .. 8.,' .' 5 10.2

·8 a.Expiain themainobjectives Qfscheduii~g system. (08 Marks)b. The following table shows the standard hours per piece for each order on:each machine,

also the order size for the job-shop, which receives four orders. Use Heuristic method todetermine the total machine time used . . . .~. " (12 Marks).. , . .•.- ,.' ,... ,..~

Order MACHINE OrderA B C D Size

1I 1.0· 1.5 1.25 . 0.75 100

2 0.5 I 1.0 1.1 0.6 200..,

0.5 0.75 1.0 0.4 50 •....>4 i 1.0 1.25 1.5 0.8 75Available machine! 80 150 250 100 - Ihours 1

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Sixth Semester B.E. Degree Exatni~~tion~JU,l1e/JulyZ{)U

Operations Man:t-gement

Time: 3 hrs. M'Nore: AlI.5'wer rtverau questions, selecting

at least TJVOquestions from each.part,

PART .•..Aa. Explain bricHy with a schematicmodeltlie systems concept ofpb. Distinguish between manufacturingand'scrvice organizations.c. What does world class manufacturing mean? What arc the

class manufacturing organization?

,. (08 r.1arks)(U6l'i~arks)

-atures of·world(061'rbrJ3)

" .~

a. Briefly explain the various characteristics of-decision rnab. Klayton Industries has the following data (In costs

product. that sel1s for Rs.6/-r unit.Details . 3000 units .

Labour 4000Material 3000Overhead IDe reciation and other Fe 1.~~~~~~~~~~~-

i) Find the fixed cost and variableii) 'Graphically find the BEP and viii) Jf tbedesircdprofitisRs ..15750

c. A firmis consideringthe foUo .A = Arrange.for subc •B·- Begin over timeC =Constructnew

Tbe correct bh6iccQepwith respective pr.obabiA cost analysis-rev

lis mathematicallyId be the.output?

HODSto make up the backlog:(lOMnks)

uredemand which maybe low, medium or highand OAO\

ol:itsthat'issllO.,..m in the·foliowingtabJe:O~s .

50~20 .. 60':150'. '20 200

a.

criteria statethe course of action to be taken:U). Maximin iif) Laplacev) Expected monitory value.' (OS .MStr}(S~

_ planning? Briefly explain the various strategies applied for' long term andapacityplanning. . (lOM2rks)iii111ing to purchase some new plating machines capable of producing 1,70;000

good parts per year. They will become' part .of. processing -Iine and expecting about~pe~~nt df defe~ts:. AS.sWn.e th~t th~:pl~ting.~·rone part ta~e.590 ~s~, The plan~?perates .O~ff'ours P<;T year. Howev er;' the. plating machlnes are used only 60 percent of the ume and

. 90 'percent efficient" Determine .the required system capacity ~d number of platingchines, '. . (04 Marks)

Briefly explain the various steps involved in making a facility location decision. (06 Marks)

b.

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VEMANA INSTITUTE OF TECHNOLOGYNo. 1, Mahayogi Vemana Road, 3rd S'lock Koramangala, Bangabre-560 034.

Ph: \)80-25529874175 . Fax: 25534943E.mail:- v1tbg34@yahoo.com Web:www.vitrjs.org

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.. PROGRESS REPORTSirlMadam,

. . . Th~ .Iriternal Assessment Test Marks and Attendance Report of your~trMf.s: ....3:(..t:Ol..\";-A ...X. ;-.~C\\DU:! .. ':-/.t .. B.•...:... studying-in pur institution is given below.

ward

Branch:' MECHANICAL ENGINEERING Sem: III USN: IVIIOMEO!tb~ ;

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First Date I' I DateFrom 01/08/11 to Second From 01/08/11 to30/08/ I1 30/0f!/ I ISubject

Marks \ No. of \ No. of \ Marks I No. of ; I No. ofObtained· Classes Classes Obtained Ciasses· Classes(Max 25) Held Attended (M~) Held Attended

l:T( 06ME33 BT{) 2-2.-16-- 13-----c-rcJ DJ '.33 2-cy 1 ~~~4 06ME34 MOM ((~J 2 J r b (AJ 3~.~3 ---+ i! SQ6ME35! MP! 2:::'D! 3 I~. 2~ 2-5" J.-S- I .Jt,6 06ME36A ICAMD Lab - I J I I! - 17 \ )(

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I:)! As per VTU rules the candidate will not be allowed to take the University Examination. ifthe attendance** in any subject/laboratory is less than 85% and internal Test marks" is lessthan 50%, (IA- Internal Test)2) As' your ward does not meet the criteria at present, you are required to meet Principal on orbdfore If you fail to do so, I am constrained to inform you that your wardwill not be permitted to take 'up the ensuing examinations~

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PrincipalACKNOWLEDGEMENT

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rq have received, the copy of the progress and attendance report of my ward."'" /Ms '. " RN···· Parent'sl\llr. • •..••....•.....•....••..•..•....••..•......................•• ego 0 , ; .............................•..

~ggestion to the ward/class Teacher/Principal. .' : : .Gate: Name & Signature of the Parent with telephone no._ ,

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Time: ~ hrs.Note: AftSUlerFIVEfull ({lIcsih"'.~,seiei;fif1g

r;i least TIf/Oqm:stioli.f frorn (/(u:1t (UlU.

t PART-.A~J)ef1nc operations rnanagerncnt and who is."the individual mhfthe Iollowing contribnt ions :i\ Interchangeable of part siI) Mot ion .economvjji) Schcdu.l-ing.ch~lsiv) $(ml"rical quality controlv} Work .samplingvi). i3chuvj(,urtl/ factors.Define productivity and explain factors art"\Vith a near sketch, cxplainthe.environrucnt

[1)5Mark;){OS M »r-k~}

pcrarions ma nagcmcnr.(07 ~tarks)

b.c.

2 a.h.c.

Ex(il;ritHllcfnnne work fordecision 1·I3ric.lly explain about decislon merboA Jirrn has .aonu·a I fixed costs ofconsid(!(t~g are additional inv:b150,O()(1 per year and wiatltie:ipHlCd iil the sales votunnew investmentis n';ade?

(07 ~I-u •..ks)

. (07 i.ll~o·ks)')d variable -.(}~ts:of $7 pcr unit. h'swllich \ViiI .increase ihe flxed cost by

ib\,.tionby $2. per unil. No change isrice ()r$15·per t1oiCWh,il is the O.E.Q .. ifthe

(O(;Mad,.)

b.l~xpla'nJJj~variousSkQ(ttrlihd<ispialt'Afiima~vcro~ihgmaintain- -all

Iheoretica llyefficient andcubicles.csi) \VImii) Wha

1;it:;Iikm ofpli\iiIS. (MM,'rks).. . (06·"""''''')mioc·hQ,'" man), QhQ~o-crrlnrscfcubicles. arc requiredto

prints per hour. The .sci up ainl exposure lime caner l".rjnt~ but operators-are on the average 'only 90 percent

6ctll (J r (Ill! prints, must be scrapped and redone, Also, Ihecntarg ing only 70 percent ol'the time.

SYSll!1l1 capacity in pr ints/hr?1JtI hr can be expected from each.cubicles .. taking it's use facror andunt?

ter cubicles "it: required? (OSMnrk"

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5 a. What is aggregate.planning? List and explain theaggregateplanning strategies.b, A companyproduces mini computers that have a seasonaldernandpartern.

productioncapacitjesduring regulartimeandovertime, as well as. cost data are

Available ca adt unitsRJ OTSC-

900 350 6002 1000 350 600

1100 350 60034 700 350 600

Initial .inventory = 20.0 units, final inventory 0;= 150OT cost/unir=' RS"150., se cost/unit =R~d75, Inventoryuriused regular time cost "" Rs.SO. Formulate thetransportation and solve.

unit -= Rs.125,nit/period =- Rs.25,ning problem by

. (12 Marks)

6 a. Define materials management. Explain the scope of I',

b. Briefly explain the inventory costs.c. A manufacturer requires rivets in an approxirnat

cost of rivets is Rs.40 per kg. The company'cost of inventory is 10 % pet year. Procr .should the order for rivets he placed andtotal cost ofinventory.

(06 Marks)(04 Marks)

teo(2500 kgs per year. Theager estimates that the carrying.200 pet order. How frequently

ies should be ordered? Also calculate(10 Marks)

II

I

<I. What are the three major inputs forb. .What arc the essential inputs and 0c. . A firm producing wheel barro v

week 4, 60 in week 6, and 5two handle bars, a wheel as

. times and inventory on Ii

m? Briefly explain them. (06 Marks)system? (04 Marks)

'deliver 40 wheel barrows in week 1, 60 inmgfherequirements for each wheel barrow ate

ne tyre for wheel assembly. Order quantities, leading of period I are shown in able.

7

ioo··3we.eks 220

[week 50

90 wheel. A shipme2. Compuquanti •.

..... 'schcd

required in week 5 for a garden tractor shipment.e bars is alreadyscheduled to be received.at the beginning of weekor the. handle bars, whcel usscrnblies.endtyres, 31)d show what

ers must be- released and when they must' be released to satisfy the master(10 Mllrks)

8 . a. t is the importance of pu~c.h~ing.and:.~~ppry ~a:ll.a,Ii!J1~nl'in operati~I'iS management?

e~~i~mak~OrbUYde~iSi09: .' '.' ~~:.~:~~~dor rating. Explain the steps involved in vender rating. (06 Marks)

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4 a. What are the differentcomponents of time series method offorecastingj' EXplain; «(14b. Afinn uses exponential smoothing with a. = 0.3 to forecast the demand. 'fhe forec

1>. week of July was 500 units whereas the actual demand turned out to be 450 units.I)' Forecast the demand .fOT 2nd week of Julyii) Assume that the actua.t' demand during 2nd week of July turned out to

Forecast the demand upto August.S'" week assuming the subsequent450,470,525 and 470 Units.

c. Discuss l:Jt'iefl)!,forecasting control and'fote?astin~2:ppHcations.

.5PART-a

a. Distinguish between aggregate, planning and master productionexample.

b. Vertex Inc produces, accounting machines that have a 'seasonalrequired to plan the optimum produClionr!ltes and inventoryperiods. The' available production capacities duringregular

, cost data are asfollows:Supplycap~cit~s.(units)

~h suitable(08 M'IIrk.s)

.ttern, We areXl four quarter

~~meas well asother

Periods. - l,tTQ"! .. ~b Contract .1 1~()0 150 8002 900 200 800

t3 1000 350 8004 700 350 800

ntQi'y'''(5 .

·1200·110018001500

7

i) Available initial inventory - 110 unitsiii) Regular time cosvunit== Rs. 100v) Subcontracting cost/unit =.Rs.145vii) COSt of unused capacity = Rs.40/unitDetermine the optimum production I

;1. What do you understand by .inventob. Expla.~nbrie:fly ABC classification .C. An industry estimates that it

ordering; cost is Rs.lOO perpUJ;~h_~e :price perunit, Thi)EOQ U}Nui\lber0

a, B"p~;iiii·t:h_e®.x:icep(ofb. Briefly expJainctites

planning. . .c. Giverr.the'produci

compureth

final inventory = 140 unitstime cost/unit = Rs.l:2-5

ventory cost/unit/period== RS.15

(12 Mark.s)

6 . enrion its objectives. (08 Marks)control. . (O(iMaf.ks)

.'.i.lbJts of iIS product for the next year. Thee carrying cost per unil 'per year is 20% of'rhe

e per unit is Rs.50. Find:Hi).Time between successive orders. (09 r.brk.,~)

witha bXo.ok diagram. (1)8 'Mai'k$)of, Bill of mateIials;,and.lotsizeinma;tenal. requirement

. . (0.6 Mules)"ee shown ill'Flg,Q7(c}a.u!ithe inventory shoWJiio'the' t!i.ble, .','-e; C, D and .Efuprodu.ce.50.unj'tsofX~- (96M~rks)

. " Component1 Inventory onhand,and, in order

. : Fig·Q?Ec) .e~~in' .the i~p.o~~·nee ..' 0(.' .riur~.Ii~<';:'an~':'suppl'y management in operations.ent.: . - " .',' .", '" . . (i 0 M:;orks)

Oil understand byrhe .terrn e-procuremenr? ldenrify the reasons for an organizationor e-procurcrnemand explain, (10 Marks)

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Date / Dale Dale. First From 01/08/11 to Second From 01/08/11 to Third From 01/08/11 to·

SI. Sub Subject 30/08/11 30/~111 30/.01\1'.11--No Code Marks No. of No. of Marks No. of No. of Marks No. of Nn:of. Obtained Classes Classes Obtained Classes Classes Obtained Classe Classes

(Max 25) Held Attended (Max_25) Held Attended (Max 25) Held .AttendedI 06MAT31 Maths \7 2-D 'r-. 22

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Sixth Semester B~E.Degree Examination, June-July 200?_~(l~e..tattQ"n:s-·.~.a,u,aU~~i:d:~

Particulars

f operations(08 Marks)

agement.(o!t,)\l*;-k"~{(.I!; ~!,a!"f.:c:..;

PART-A

1 a. Define 'OperationManagement. Briefly explain. the-historical demanagement,

b. Whha neat sketch, explain the environment of operations 0c. List the various factors affecting productivity,

2 a, EXplain the frame work for Decision Making,b. Write a note on Decision Methodology.c. A producer of calculator watches sells his produc

each, The production. costs at volumes of 10,00· an

(06 Marks)(06 Marks)

credit card firm at a 30$-units are as follows:

.25000 UnitsLabourMaterials.Overheads (FC+ VC)Sellmgand administrativiDt.;t~ci<i;ti.OI:J.;anQ·othetF

Use the data to prepare abreakev

100,000200.0001ro.ooo60:QOO

".. <~O;(},bO 80;000(08JSti1rks)

3 a.· Define the following : ii) Systernoapacity Hi) Capacityplanning. '(9 6,M~rk$)

b. Briefly explain the' vario fluencethe location of plants, (06'Marks)c. An automobile compel:'hasllie plan 6fbwing a .rnoulding machine

which canmanufact good-parts per year. The moulding machine is a part of aproductIinerThes ncy of the product line is 85%,i) Wha1 is the req capacity?ii) Assume tb ',0 seconds to mould each part and the plant operates 2000hours per ding machines are used only 60% of the time and are 90%efficient, output ofthe moulding machine per hour?Hi} How ng machines would berequired? (0$ l'rbrks)

4 a,b,c,

(06 Marks)

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PART-.n

5 a. What are the' objectives-of aggregateplanfring-atidWaSterScliedulirig?b. List the various strategies of aggregateplanning.C. A!1appli;mCe"tnanufaeturet"produces a ..motor..casserably(X} that is used in

he.ldappliances. They currently have 60 units In stock. arid will rnanufacpr9d\lctIon.JotS .of90.uhits,E>evelop'aotentai1Ve. m;fsterscned\ile for .the dembelow: ~~~~~~--~r-----~------~~~------~'

Customer Forecast 5

Customer Orders

Week3 4 5 630 40 50 40530 10 10

5 5

- - .-

Initiannv:cntoIy = 60 1'-7--,-;:;--,-;:--r-:--,--::--'-+7'--.::;--;-;;-:Production Run> 90 I 2

Interolanr Forecast40 40

Warehouse Orders j 15 '10.

c. .Overland motors uses 25000 gear assemblies eacheach. It costs 50 $ .to process and receive an 0 . 10.78$ per unit year.I) How many assemblies should be ordej i) How many orders per year should be

7 a, 'With the help cfflow chartvcxplainb. Briefly explain thefollowiag : i) .c. A workcenter operates 6.days per

4 machines With the same capabrlsystem efficiency. of 90 perce .

(08 Marks)purchases them at 3.40 $ .

y can be earned at a cost ~f

(06 M.arks)

(08.Macks).. ers ij): MR:PLogic. (08 Mafk$)

. -shift/day basis and 8hottrs / shift. It hasachines are ut'ilizcd75% of the time at a

ated output in standard hours !week?(04 Marks)

8 Write short notes on the.follo.a. Components of SUPplyb. Make (orjbuy decisioc. E ~ Procurement.d. Vendor development

(OS Marks)(OS Mnks)(05 Marks)(05 Marks)

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l)SN

Sixth Semester B.E. Degree Examination, December 2012Operation Management

Time: 3.hrs.

Note: Answer arty FIVEfull quesrions, selecting atleast TIf'O questions fro

EART-Aa. Define.operarion.rnanagemerrt, Trace the historical events lead in

management.b. How do the managerial techniques and productivity me

companies differ from the American firms? Explain in briec. What is productivity? State the factors which affect the p'

improving productivity. .

2

:id)' of operation(OS'Marks)

d in Japanese'(06 Marks)

'Slate the methods of(06 Marks)

a. What are tbe techniques that an operation manauncertainties?

b. Jindal Steels Ltd, is planning to start a new factconsidering three Location options namely Bant!at these three locations have been estimatemillion respectively. The variable costs a~ 580 per unit and ~ 490 per unit respeccapacity of 1'0,000 steel utensils and'Find the best location option, whi

c. A small building contractor hasopportunities exceeded the firm'

. capacity for nextyear. He lJbelieves tnight QCC\l( asshot

solve.the three degrees of(04 Marks)

nufacturing' steel utensils. lt isoga and Bellary. The fixed cost

ton ; ~7.377 million and ~ 7.903c Ions are estimated at ~ 500 per unit.

actory win have an annual productionears it will operate at 75% efficiency.tal.costof'production. (OG-Marks)

need. two' successive years in which workhe contractor must' now make a decision on

ofits under each of the two stales of nature hecision matrix below.

TRACT .~ 4000@ l' 70000 . .. selectedif the decjsiolierit~ri()nis·i)Maxhnax·· ii)' Maximinexpected va:luccritcrion, tdentifYthe best alternative for the

igh demand : P(low) '" 0.3and P(high) "" sir. (10 Marks)

3 a. -een esign.capacity and System capacity. (04 Marks)b. layout? What factors determines the type of layout usedinanorganization?

Explain 'r. echcolcgy'i layout with its advantages. . . (08 !>1arks)c.. 1'40' is considering the expansion of the existing facifityby adding rnore I ~Oll- capacity

c'" 'fi.~ac~s for ma.PlIfaclur.in. g ~o.lid .!?fopellant. Each.·ba:ch ..( I J<?~) ..propellant .!n~lsto 30 mmutes of furnace urne, mslu.dmg loadand uriloadingopcratioris. Due to power

ns, the furnace is used only 80 percent of the time .. In ~ shift of S .hours, therired output is to bcl6 tons. If the plant (system) is estimated at' 40% of system capacity

eterrnine the number of furnaces required . ji). Estimate the percentage of time thefurnaces will be idle. "~. (08 Marks)

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4 a,h.

c.

PART~R5 a. Discuss three pure planning strategies in aggregate pla

" b •.. A company produces a motor assembly that is used in60 units 10 stock and will manufacture more in. prod ctentative master schedule for the demand shown in

lntial Iriventory = 60 I-::-W_e-re'-':k:'--.....-::_~""""-,;-] 2

(06 M;i,•..J<s)held appliances.Tt has

(10ts1 of90un1[5. Developsa(10 Marks)

8 9 1050 50- 50

5 50Customer Forecast 5IJ1t~ lant. ForecastCustomer order\Van~house orders 15

c. State the functions of the master s

6 a. What is the need of carrying out inmaterial managernenr,

b. List out the various ways of

trol in organization? State the functions of the(to Matks)

inventory items. Briefly explain ABC analysis -.0.0 Ma.tI<s~

terial requirement planning. Explain briefly, biH*;of................. , .. .. . .. . .. ... . (081\'h ~ks}

ified by Toyora Motor Company, to be eliminated for nhection process. (04 Matks)

e tree .and inventory. Compute the net requirements fOT N' B,its of X. (OSi\-Urks.)

7 it. State the inputs and 0materials. .

.b, .What are the seven ..continuous improve

c. With the~ivcn' uc]C,n:an:d· ..

xplain E- procurement.y explain the historical developments in supply chain management. .

(10l\1at'1<.)

(101\1,*14)

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[JSN

Sixth SelnesterB.E. Degree Exa.mination, D"ec~09/.Jan.l0OperatiQt) 'jM«ib~elrte'ti:t

Note: .Arsswer ~y F'IVEfulli]l;Icstic1%s; selectlngat least TWOqlieslio11s .fromeacl: part. .

PART~,Aa.Define operations management. Explain n schematic model ofa production system .

.' .•.. . ..' .' . . . .6 i\-Iark$)b. Define productivity, What ate the factors affecting productivity? one of them:

. (08 Matk$)Mention atleast eight points of comparison between service and goodsproducer system. (06 Marks)

c.

What are the frame works fOT decision making? Explainb. Explain briefly the economic model with appropriate skec. Madhura garments is evaluating a project of deV$lo

through R and D or through a collaboration witmanagement of the company estimates. its 10 yearsprobabilities for various success possibilities as shov

a.

a) Develop throughRandD -120

.600 -40b) j olrit venture "'1 thNarksan4S encer

Suggest the management whii)Nfaximaxli) Maxi .

uldbe selected based upon the criterion ofe IV) Maximum probabihty. (08 Marks)

Distinguish between de .jexample.

h. Explain briefly phasr

system capacity with-a neat block diagram, with an(06 Marks)

and phasing. C:>4t~~p/l.city.in .long rermcapacity strategies .. " .. , (06 ~1:\tks)

ith a neat sketchexplain anyone processing layout.tos Marks)

forecasts important to organization? Discuss briefly. (05 Marks)ocedure for using time-series m,etnod. (05l\brk$)

onential forecast.for the week of 5/14 for a firm with the followingand 13= 0.2. Begin with a previous average of Fr_. = 650 and let the

ustment, 1'•.1 = 0

c.

(10 l\brks)

PAR.T-B.0 aggregate planning policy guidelines and explain any two of them.

tthemaster scheduling function and explain any two functions.10f2 . "~~.,

C10Marks)(lO Marks)

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III 6 a. Define 'materials' and 'materials management'. What are the major concerns of mI. management?

b. Auburn machine companyproduces parts that are sbippednation·wide. It hasI to produce plastic pp:ckag!ng cases which are currently purchased at $ 0.70! demand depends largely on' economic conditions.butlong-rim esfimatesateassnI •, Demand (units'I.:: Chance(%)

If the company produces the cases itselfit must renovate an e .a moulding machine which will result in annual fixed clabour, material and overhead are estimated at $ 0.50 peri) Should Auburn machine company make or buy theii) At what volume of production is it .more pr fitablpurchase from an outside supplier?

c. What do you understand by inventories? Wh

oduce in-house rather than(08 Marks)(06 Marks)

7 a. Define NfRP and 00. Write a flow chart 0

b. Complete the material requirements.pindependent demand tha: necessitate,

ain briefly. (10 Marks)own below. Note that. this item has an

. s{ockof40 units be maintained.

Week4 5 6 1 s 9 10 11 ii

20 25 20 20 30 25 25 2~

(10 Marks)

8 . invo ved in a supplier development-programme? (08 Marks)upplier certification. programme? Why is it required? (06 Marks)

e-procurement? -Identify three xeasons for .an .. .:(0'6 l't!a.rks}.· ... ·

* * • * *

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. ~ ... .$ .... ".: . (r,. . .'

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USN [[[]J l]JIDSixth Semester B.E. Oegree Examtnatlou, December 2011

Operation's lYtan:ag~m~nt

Note: Artswer afTY'FI VE.f1l1l question s.: "elt!ctiJlgatteas rlPo q'uesthms.from eaet) plll't,

•iistorical events(08 iVlark$)

(04 Murks)

.os M:lrkS)

:I. Wh:)1 do you understand by the term operations management? ..leading to the study or operarions management.

h. Draw Ihe operations management system. showingthe etenc. Define theproductivity andexplain lhefullclionsaffeclin

2 a. Llsr tile steps in a systematic decision making proces

b. Discuss the break even analysis (BEA). l)eriv(BEP).

,(04 Ml1rks)

for the break even point(04'MNrk~)

plant. to manufacture computerconornic portion of plant location

1 Table( I j-and Tablet Z).T<lble(2)

I Volume ProbabiliTYI 4.~~~._L__.9.:.~__._._t-2200_L~~ __L.65QO I 0,6

graph the 'plant location eo si

c. An electric company is evaluating three cihardware components whichxel I at '{"l70!study shows the following COS1 and ma

Ta blc{,--,l"':")_-r---' -' -- -----~.....-~-.."--

jIi-J7j'0(f"c05r(ler ye'lr G;(IlOll,;anr-------' -.''''- ~----'--:........",.o--''--'--'-l Variable cost per unit ('{")i)()n the ~;siS- of ma;>;j

C~\I"Vt's.ill \Vhichcilysh6111diii) What is the brea~-

tl..ebasis ~fthegivefl yolumeestimate'?rthe eity selected? (Ii M:irk~)

J 3.

h.

c.

Not good (g)LTqtal lOO·

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P,ART..,..H

5 a. What is aggregate planning') Explain the different

--""--Year I 2 ,3 4, L_;)Sales 110 130

-160 1'Iso150

Index 100 I 10 ,140 15C!~

4 a. Define forecasting. Lisr and explain the forecasting variables.

b. Explain briefly any two methods offorecasting.

c. A. firm is manufactur+ng, autornobtles.cand finds arclarion between sa.~·.~laUI()'llobilindex of denlandtbr the car. Sales tor the past five years arc given in~tt"let"",':>lc' v .the relatlon between the demand index and sale of automobile by '}e.t~$\ Sql Iiregression. Further make a forecast tor the 6'" year assuming the inde':'::i!$ ·2:m. ,\1'

b.

le plfulJl i,ll,;.(08 Mftrk.,)

'I'he available.)t, ,<*re .sho wn in the

... Pinal invernory '"OT cosvunit '" ~ 1lnventorycarrj

6 a. Defl,ne the materials managernent.

(1-2 Marks)

(O~ Ma rks)

'b~ Write a note on Inventory costs. (04,1\1",".)

c. A manufacturer requires 60 rand estimates an ordentl~ ":OSI of '{'2D/- perorder. Inventory is financed ,loans tit approximately l~lI'l''''.·,<v;l~i..:hworkout tocarrying charge of ~ 10!- at. based on the average im'c}'fIt&ry. Storage costsbased in the adequate li.ll11 inventory are '{'0.0251':''pet"".I<a.tt· 'and' 'P\lrc1m~"'"price is ~ I.(iO/- per {In ii) What is [he rnos order quantity?

. ii) What is tile total o (jn:ven'tory'?ii i) How many' e ed per year? <12""!li:kS)

7' a.

b.c.

, ' ,

uts for an'MRf> system? (04 !\-lurks)

puts and outputs of a CI~i>system? (041\'ll1rl<..)

mand -in 4"'week 01'400 units and Sd, week 0/"'5J)0 ~·mi.ts. Lead timefirm has on hand inventory of 50 units. including safety 's,l1.'lck 'and scheduleditsin week 4 anelSOO units in week S, Estimatethe or&...,,~e4oired.

-, (12 :'ohrk')

t.i s the importance ofpurchas ing ill operations In~nt:lg~nl(~nt"':y. eX:~"<Iin the "iH,.k", or buy" decision. " .',

vendor raring. Explain the steps involved in [h~ vendi)!' r;'lting.* * "..*-*

(OS :"larks)(0(, Marks)(0(, M.irks)

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Note: Answer any FIVEj'ull questions, selectingar least ·TWO questions fro-» each par:.

Si:dn- Semester B.E. Degree Examination., n.ecember 2010Operations Manageme'nt

Tim e. 3·hrs.

PART--t'"Define operations management. Identify some principal raciors a.tT c "O-(i.~. - 'V· I' 'y'•••••. ·1 t ,

(0.5 Mork$)-fie management.

(OS l\1~rks)(OS MO'k.)(05 Mnrks)

"b.

c.d.

2 a.b.

c.

Identify the major contribution of key individuals associated wi

How do you distinguish between manufacturing and servicMention the salient features of a mass production system.

Explain briefly the various characteristics of decisioiA shoe company plans (Q produce 30,000 pairs 0

. Rs. 700 each pair. The fixed COSlS of operation arRs~6() lakh. What is the breakeven point?A glass' factory, specializing in crystal ismanagement is consldering three courses 0overtimeproduotlon and C) construct neupon rbe future. demand, which.managementranks the respective pmthe effect on profits as shown in. the

(04 Mnrks}r.They will be sold for

variable COSIS are(IN Mar!,sl

substantial backlog and thege for sub contracting B) begin

he COn-eel choice- depends largelyium or high. By consensus, the

10, 0.50 and OAO. A cost analysis reveals

d,

3 a.b.

c.

Definethe d (02 Mad<s)What ste location decision. for a manufacturingand (06 Mad,s)An em supplier wishes to Install a sufficlenr number of ovens to produce

- 40' s/yeer. The baking operation takes 2_0 minutes per casting but ihe ovenabout 6 percent defective. How many ovens will be required. if each o:ceOC)hours (of capacity) per year? (00 Hn,k_l)

d. _advantages and disadvantages of'process/funetloncl Iayouts. (OoMarks;

. et to time series methods, explain the following terms:i) T1~nd .ii),Seasonal· iii) Cyclical factors iv) Random components. - _ (04 i\:Jn;-:<.S)US~lC mid-deviation method to develop a linear trend equation fo-rthedata shown b-:kw/ ..

tare the equation, complete with the signature.Torecast a.'rend value ror~~ year i6_IYear ! I I 2 I 3 i 4ffiJ1. :; 6: ? I 8 Slim'to Jl i-~- -r-.;-l.--f--+-_. -1--;---- --;::;-t--~U;_:1j~mer~qk8s) 12 ! :> i 6 liOS 'i t2 LL4 13 i8_U>J .

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b.rA·en.donthe decision variables and- associatedcosts in -agg-r.egatc_-p.JaJ1.Gi!.lg,1-\ customer furniture company ... currently i1<?S 100 employees and ha~~ f.:)itecEt:sl quarterlydemands shown in the table below. The historical average produ is ~ units peremployee/quarter and the firm has a beginning (safety stock) inv 01funits. Thehil'ingand training cost is Rs.400/cmployec and tliclaYQff OO/ernploye.e.Inventory is carried at a cost of Rs.8 per unit per quarter.' ·0 develop anaggregateplanthatuses variable employment and inventory __nd.

I Quarter _._+ ~~~:~~~r~mand3:.recasi for fU7ituxeI Demand I 3,500 ._ 5.00o__._ 4,000

PART-:B

-------------------'-----_ .._---------_.---_._--_._---

C. In what manner correlation methods differ from regression melhods?d. Results-of a study. to determine the correlation between no. of tyres

and distance jraveled (X). are as follows:LX "'184'; :EY = 8"0; n ~~8; :EX2= 5,0.06 l:y2 = 950.; :EXY =- 2,l4.6.Compute {he .correlarion.coefficient,

5 .c.

_.._._L . Total :J)__ L__ 15.950 _i

(08 MorkS)

ii) Define ATP. Where is itused? (07 Mar""')

nsideration in production QperatiOllS'?(04 Niait-kS)

scope of mal eria Is management. (05M s,'k.o.;)(06 i>1f>rks)

ubricants at the rate of Rs. 42 .p::r piece froro;ants are 1800. per year. \\Ihat sho~il1,d be the 'ordering

emenr of an order is Rs. i6 andrnvei\lOry carryinge. (U5M.rk..~}

own in !h,i': Iollowing table:,c..;:;:.:::.;e:;::c:.:;.sc.__ ••c- __ -;o

90nino. ti·~llr~.t~·?:!.\~.§..16. I "1 I _~,l...?__l

'-t-=::-t--"::;",="; t-=t:-f)c. i)

-Customer orders (Booked)Pt:Ql;;c!eTa~abJebl!hlJ)ce .l'v{astet ~~ductjon schedule

6 a. Why is (he inventory control such

b.c.d.

With the help of ablock diagraiBriefly explain the ABC anaAn oil engine ·inanufaclure'vendor. The requirementquantity per order? Thcharges per rupee per y

7 a,b.c.

eRP? . (1.13 /Vln¥k:!i

outputs in a MRP system? ,CO;}Matks:)lent plan shown below. Find the' ;'1111ounC6r'j·riveotory on hano

(08 f\·11J;~-k:;:~

.i..I

d.. (or; r/j;n~.~;';'{:-.

re t~'niqjor responsibilities of the purchasing department? '.. ' (O~ ~~;.;~;l ..... :n (tie-"irnpolianr variables toselect the SL!pp·,!er.- ::-. ' :.' .. "... (04 !Vla;:~.s:'

you mean by' make ...or-buy decision? How do ycu assess '.t::e.ab(':.',,"·~ decision th.:~~)-:.:g>chart" . (06" 1'Yli:1r~t~~·

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