CWA ICWA Exam Papers Inter Group II
Operations Management and Information System December 2010
This Paper has 55 answerable questions with 3 answered.
Time Allowed : 3 Hours Full Marks : 100
The figures in the margin on the right side indicate full marks.
Section I : Operation Management
Answer Question No. 1 which is compulsory and any two from the rest, under Section I.
1. (a) For each part below, choose the most appropriate answer out of the four options indicated below each part: 1×5
(i) Linear programming is a technique used in
(a) Plant layout, (b) Production programme, (c) Product mix, (d) Manufacturing sequence
(ii) Relaxation allowances are considered in
(a) Time study, (b) Method study, (c) Ergonomic study, (d) Feasibility study,
(iii) PERT is
(a) Event oriented technique, (b) Activity oriented technique,
(c) Both (a) and (b), (d) None of these,
(iv) Industrial Engineering is a
(a) Line function, (b) Staff function, (c) Both line and staff function, (d) Co–ordination function,
(v) Annealing is a process of
(a) Joining, (b) Forming, (c) Machining, (d) Heat treatment.
(b) Match the terms in Column I with the relevant terms in Column II.
(A) Foundry (i) Gearbox
(B) Machine Shop (ii) Value Analysis
(C) Brainstorming (iii) Electrode
(D) Automobile (iv) Lathe
(E) Forge Shop (v) Cupola
(F) Welding (vi) Power Hammer
(G) Heat Treatment (vii) Rubber
(H) Tyres Plant (viii) Hardening
(I) Assembly Line (ix) Go–No–Go gauge
(J) Inspection (x) Conveyor
(c) What recording technique will be used for the following production situation? 1×4
(i) To reduce movement of materials. (0)
(ii) To reduce ineffective body movements. (0)
(iii) To study one operator running one machine. (0)
(iv) To develop work bench layout. (0)
2. (a) A manufacturing organisation operates an incentive scheme on slab-rates based on cost of production as shown below:
Savings in production cost
(Labour + Material + Overheads) Incentive Amount
(as % of savings)
Above 70% 5%
Three workers X, Y, and Z take 25 hours, 30 hours and 15 hours respectively to produce 10 units of the product and their respective wage rates are Rs. 6.00, Rs. 6.50 and Rs. 7.00 per hour. The material cost is Rs. 50/- per unit and the overhead recovery rate is @ 500% of cost of wages. The standard cost of production per unit is determined at Rs.175 per unit.
What is the amount of incentive earned by each of these workers and what is the actual cost of production per unit in each case?
(b) Expand the following: 1×5
(i) GERT (0)
(ii) CRP (0)
(iii) CIM (0)
(iv) MTBF (0)
(v) TQM (0)
(c) A shaft 600 mm long is machined on a lathe at a speed of 200 r.p.m. Calculate the time taken for the cutter to pass through the length of the shaft if the feed is 0.30 mm per revolution. 3 (0)
3. (a) Given below is the existing process layout of a factory manufacturing toys:
C B D
E A F
The following table gives the trip matrix for the unit. Arrive at an improved layout using the Load Distance matrix assuming that E and F should remain at their current positions:
From/To A B C D E F
A 2 2 1
B 1 6 5
C 1 4
(b) A solar manufacturing company has observed the following number of breakdowns in its new lantern over the past year:
breakdowns 0 1 2 3
No. of months
it occurred 3 6 2 1
It costs the firm Rs. 1500 to rectify a lantern. Should the company go in for preventive maintenance at Rs. 600 per month which will limit the breakdown to one per month? Please advise.
(c) A tool manufacturing SSI Unit requires about 900 nos. of HSS bars of size 2 cm square and 10 cms length in machined and annealed condition. The unit can get the input as above in two ways:
(i) Purchase un-machined HSS bars of standard size of 2.5 cm square and 10 cms lenght from market at a price of Rs. 60.00 per piece and then machine in its machine shop with shapers to size 2 cms square and 10 cms length and anneal it further in its heat treatment shop. The cost of shapers is Rs. 6 per cubic centimeter of metal removed. The annealing cost is Rs. 900 for a batch size of upto 200 nos. maximum and if the batch size is smaller the same cost will be incurred. The HSS scrap produced after machined can be sold in scrap market at the rate of Rs. 4 per cubic cm.
(ii) The unit has got an offer from another firm for supply of machined and annealed HSS bars @ Rs. 115 per piece.
Which alternative should the unit adopt?
(d) What are the advantages of preventive maintenance? 3 (0)
4. (a) M/s HMT Bearings Ltd. is committed to supply 24,000 bearings per annum to M/s Lokesh Machines on a steady daily basis. It is estimated that it costs Re. 1.00 as inventory holding cost per bearing per month and that the setup cost per run of bearing manufacture is Rs. 3240.
(i) What is the optimum run size for bearing manufacture?
(ii) What should be the interval between the consecutive optimum runs?
(iii) What is the minimum inventory holding cost?
(b) Differentiate between Jigs and Fixtures. What are their uses in a production system? 1+2 (0)
(c) Explain grading method of job evaluation. 2 (0)
(d) Jaago Engineering is analyzing the efficiency of its work and service personnel. Its service procedure is classified into the following seven activities along with its duration:
Activity Duration(Hrs.) Precedence Activity
A 8 –
B 4 –
C 6 A
D 9 B
E 11 A
F 3 C
G 1 D,E,F
From the above details:
(i) Draw the network diagram,
(ii) Find the critical path,
(iii) Calculate the expected time,
(iv) Slack time for each path,
(v) Earliest Start and Finish Time,
(vi) Latest Finish and Start Time.
Section II : Information Systems
Answer Question No. 5, which is compulsory and any two questions from the rest, under Section II.
5. (a) Put an appropriate word in blank position: 1×4
(i) Check digit is to ensure _____________ of code. (0)
(ii) Firewall offers an effective system to protect _____________ access (0)
(iii) Time sharing allows number of jobs processed _____________ (0)
(iv) Debugging is the process of eliminating _____________ . (1)
(b) Expand the following acronyms: 1×5
(i) BPR; (1)
(ii) PROM; (0)
(iii) VGA; (0)
(iv) OLAP; (0)
(v) ASCII. (0)
(c) Each statement below is either True or False. Indicate the same in your answers: 1×5
(i) Interpreter translates a whole program. (0)
(ii) File volatility is the rate of change in the records in a file. (0)
(iii) Cache memory is a very fast RAM. (0)
(iv) Oracle is a programming language. (0)
(v) DBMS reduces data redundancy. (0)
6. (a) What are generally the sub-systems in Sales and Distribution Module of an ERP Package? 5 (0)
(b) What is Gap analysis? How is it important in ERP implementation? 1+2 (0)
(c) (i) What is Computer fraud? Describe five common types of computer fraud? 1+5 (0)
(ii) Mention two important measures each for detection of fraud and prevention of damage out of fraud. 2+2 (0)
7. (a) What is an Interface device? Describe three commonly used Interface devices. 1+3 (0)
(b) What is a virus scanner? Describe briefly the functions of a virus scanner. 1+3 (0)
(c) PQR Ltd. is considering three options to acquire for computerizing one of its important functional areas. The options are:
(i) Buying the software package available in the market;
(ii) Engaging software industries to design the software;
(iii) Developing the software in-house with the help of their own IT people. Narrate the relative advantages and disadvantages of each option.
(d) Match Column I with relevant term in Column II:
(A) Encryption (i) Relating to measurement of network speed
(B) Broadband (ii) Output device
(C) Peer–to–Peer (iii) Communication between two pieces of hardware
(D) Bandwidth (iv) Scrambling of Data
(E) Handshaking (v) Picture elements in individual dots
(F) LCD (vi) Collection of computers with same access right as every other computer on the network
(G) Spooling (vii) Buffer storage to reduce processing delays
(H) Pixels (viii) Different kind of transmission at the same time
8. Write short notes on any six of the following: 3×6
(a) Models to represent Information; (0)
(b) Search Engines; (0)
(c) Computer as audit tools; (0)
(d) Problems in Internet; (0)
(e) VB; (0)
(f) Audit Charter; (0)
(g) Characteristics of Data Base; (0)
(h) WAN. (0)