ME 09 702-OPERATIONS MANAGEMENT OCTOBER 2012 (2009 Admissions)

SUBJECT - OPERATIONS MANAGEMENT

CODE -  09 702

SEMESTER - SEVENTH

BRANCH - ME

UNIVERSITY - CALICUT

YEAR - 2012

Part A

Answer all Questions

1.What is productivity?

2.What is MRP?

3.What is BIN card.

4.What is crashing of network.

5.Explain master production schedule.

(5x2=10 marks)

Part B

Answer any four questions,

6.What are the principles of good product design?

7.What are the ’qualitative methods in forecasting?

8.Explain Johnsons rule for sequencing.

9.What are the basic inputs for MRP.

10.What are the objectives of materials management.

11.How can we find out the optimum period for replacement.

(4x5=20 marks)

Part C

Answer all questions

12.ABC Ltd. Has started the production of invertors. The demand for different weeks of March and April of the company are given below. Assume the initial forecast for the first week of March as 6000 and corresponding initial trend as zero. Assume a =0.1 and = 0.2. Represent the trend adjusted exponential smoothing forecast for March and April. Also find MAD, MSE, MAPE and tracking signal.

Month March April

Week "2 3 4 1 2 3 4 ‘

Demand 6500 6000 5500 6500 6500 6250 7000 7100

Or

13.Write short note on:

(i)Standardization

(ii)Simplification

(iii)Product design

14.Briefly explain computerized layout planning.

Or

15.Explain (i) Aggregate production planning

(ii) Assembly line balancing.

16.Briefly explain Deterministic and probabilistic inventory models.

Or

17. We have five jobs each of which must go through three machines A, B and c * order A, B, C. Processing time in hours are given. Determine a sequence for the fjVe

that will minimize the total elapsed time. Find also the idle time for machines A t* Q * ° and

Job Processing time

i. Ai ■ Bi . Ci

1 16 . 10 8

2 20 12 18

3 12 4 16

4 14 6 12

5 22 8 10

18.The precedence relationship with Node numbers of a maintenance job are given as 1 follows. Draw the arrow diagram and show the critical path. Indicate the slack times for m jobs (3, 5) and (7, 8).

Job a b c d e f g h k L

Node

Number 1-2 2-3 2-4 3-5 3-6 4-6 4-7 5-8 6-8 7-8

Duration

(Days) 2 3 4 5 10 6 3 8 7* 3

Or

19.Explain preventive maintenance and break down maintenance in detail.

(4x10=40 marks)

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