Department of Mechanical Engineering
DVR & Dr. HS MIC College of Technology
Production Planning and Control
Assignment – I
1. (a) Discuss the objectives of Production Planning and Control.
(b) What do you understand by Control phase? Explain the activities under this phase.
2. (a) Describe the elements of Production Control.
(b) Explain the various functions of Production Planning and Control
3. (a) What are the main types of production systems? Explain.
(b) Write a note on the organization of the PPC department.
4. Forecast the production for next two years when the production quantity for last
ten years is as follows:
200,225,235,240,255,260,265,275,270,271
Use the following methods and comment on results:
(a) Simple average
(b) Moving average (3 years and 5 years)
(c) Exponential smoothing for = 0.3 and 0.7
5. The cost per standardized long distance phone call has been decreasing over time.
Using the following data for the last 8 years:
Year 1 2 3 4 5 6 7 8
Standardized Cost 3.25 3.05 2.98 2.93 3.91 2.58 2.44 2.37
(a) Use linear regression to compute an expression for cost as a linear function of time.
(b) Using above equation, predict the standardized cost for year 10.
6. List out various quantitative techniques for forecasting. Explain any three of them
in detail.
7. (a) Define inventory? Explain various functions of inventory.
(b) Explain various costs associated with inventory.
8. (a) List and explain the different costs of inventory system.
(b) The annual demand for an item is 36,000 units. The carrying cost is Rs.0.50
per unit per year. Ordering cost is Rs.25 per order, and the shortage cost is
RS.15 per unit per year. Find the optimal values of:
EOQ, Cycle time
9. (a) Distinguish between ABC analysis and VED analysis.
(b) Distinguish between the P and Q systems of inventory.
10. (a) Briefly explain the purpose and concept of Line of Balance.
(b) What does the bill of materials structure mean? Explain by an example.
11. (a)What is the purpose of modeling an enterprise? How does ERP fit in the enterprise
modeling endeavour?
(b)Explain the basic principles of JIT manufacturing system.
12. The master production schedule to manufacture a certain item is shown in Table 1
below. The details of Bill of Materials along with EOQ and stock on hand for the
final product and sub assemblies are shown in Table 2. Complete the Materials
Requirement Plan for the different parts of the item shown in Table 2, and find
what quantities of orders must be released, and when they should be released in
order to satisfy the MPS.
Table 1 : Master Production Schedule
Week 1 2 3 4 5 6 7 8
Demand 100 - 150 140 200 140 - 300
Table 2 : Details of Bill of Materials
Parts Required Order Quantity No. of Units Lead Time(Weeks) Stock on Hand
Fire extinguisher 300 1 1 150
Cylinder 450 1 2 350
Valve Assemblies 400 1 1 325
Valve 350 1 1 150
Valve Housing 450 1 1 350
Handle Bars 700 2 1 650
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