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BACHELOR OF TECHNOLOGY INMECHANICAL ENGINEERING

(COMPUTER INTEGRATEDMANUFACTURING)

Term-End Examination

|une, 2A0g

BME-035 : INDUSTRIAL ENGINEERING &OPERATION RESEARCH

Time : 3 hours Maximum Marks : 70

Note : QuestionNo.L is contpulsoty. Attempt any six questions

front the remnining question. lJse of cnlcttlntor is

permitted.

1,. Select the most suitable answer : 10xL=L0

(u) A graphical device used to determine the

break-even point and profit potential under

varying conditions of output and cost is

known as :

(i) Gantt chart

(ii) Flow chart

(iii) Break even chart

(i") PERT chart

(") none of the above

BME-035 P.T.O.

(b) Basic tool in work studY is :

(i) Graph paper

(ii) process chart

(iii) Stop watch

(i") Analytical mind

(") Planning chart

\A/hat does symbol'tl i*ply it work study :

(i) Operation

(ii) Inspection

(iit) Transport

(i") Permanent storage

(") None of the above

ABC analysis deals with :

(i) Analysis of process chart

(ii) Flow of material

(iit) Ordering schedule of job

(i") Controlling inventorY

(") All of the above

One Time Measurement Unit (TMU) in

method time measurement systems equals :

(i) 0.0001 minute

(ii) 0.0006 minute

(iii) 0.006 minute

(in) 0.001 minute

(") 0.06 minute

(.)

BME-035

(d)

(e)

(f) String diagram is used when :

(i) team of workers is working at a place

(ii) material handing is to be done

(iii) idle time is to be reduced

(iv) all of the above

(") none of the above

Micro motion study is :

(i) enlarged view of motion study

(ii) analysis of one stage of motion study

(ii| minute and detailed motion study

(i t) sub-division of an operation into

therbligs and their analysis

(") motion study of small components

upto micro-seconds.

The allowed time for a job equals standard

time plus :

(0 policy allowance

(ii) interference allowance

(iii) process allowance

(i") learning allowance

(") unforseen allowance

Percent idle time for men or machines is

found by :

(i) work sampling

(ii) time study

(iit) method study

(irr) motion study

(") ABC analysis

(g)

, t(h)

(i)

BME-035 P.T.O.

0) Time study is :

the apprhisal in terms of time, of the

value of work involving human effort

machining setting

(iii) time taken by workers to do a job

(i") method of fixing time for workers

(") method of determining the personnel

requirements

A company is making tow products A and B.

Plant of the company can operate 48 hours per

week. Production of product A will require

2 howsfunit and production of product B will

require 3 hours/unit. Each unit of product A will

contribute Rs. 40 to profits while product B will

contribute Rs. 80 per unit to profits. The marketing

department, af ter extensive research, has

determined that a maximum of 15 uni ts of

product A and 10 units of product B can be sold

each week. Formulate a linear programming

model to determine the optimal production mix

of both products that will maximrze profits. Solve

the above problem using the graphic method. L0

(i)

(ii)

2.

BME-035

3. A cement factory manager is considering the bestway to transport cement from his threemanufacfuring units P, Q, and R to depots A, B,C, D and E. The weekly production and demandsalong with transportation costs per ton are givenbelow ' 10

Supplyin Tons

603540

22 20 1B

\zVhat should be the distribution programme ?

A certain work order has five jobs which have tobe assigned'to five mechanics. The estimated time(in hours) that each mechanic requires to complete

the job is given in the following table : L0

l \ _I MECHAMCv h I z I s I + J s

P

aR

Demand

in Tons3045

4 .

M1

M,

M3

M,

Ms

7 5 9

9 1 2 7

8 5 4

7 3 6

4 6 7

8 1 1

1 1 1 0

6 9

9 5

5 11,

Assuming that each mechanic can be assigned toonly one job, determine the minimum time forcompleting the work order.

423

1.aJ

5

aJ

22

424

4

J

4

BME-035 P.T.O.

5 . A job consists of three work elements and all are

performed by the same operator. An analyst

conducted work sampling to determine the

standard time for the job. The duration of the

study is two shifts each with 400 minutes of

effective time. The details of observations are

summarized in the following table. The total

number of acceptable units produced during the

study period is 150 units. Determine the standard

time by assuming allowance of 10%. 1 0

Work element

number

Frequency of Performance

performance rating

12

3

708050

80%LzA%1,L0%

A manufacfuring company keeps stock of a special

product. Previous experience indicates the daily

demand as given below :

Simulate the demand for the next 10 days. Also

find the daily average demand for the product

on the basis of simulated data. Use the Random

Numbers 82, 96, 18, 96, 20, 84, 56, lL, 52, 03.

10

Daily

demand5 10 15 20 25 30

Probability 0.01 0.20 0.15 0.50 o.L20.02

BME-035

7. Solve the following pay off matrix to determine

the optimal strategies and the value of game.

B

I s 1 lA r IL 3 4 r

Write short notes on any tuto of the following :

(u) Data Envelopment Analysis

(b) Design for Environment

(") Factors affecting product design

(d) Human needs considerations for work

organization.

- o O o -

10

8 . 1 0

:i

l .I

BME.O35