Attempt all the problems.
problem1) Describe the concept of aggregate planning. How do we disaggregate the aggregate plan?
problem2)a) What are the basic attributes of Quality?
b) How could Control Charts help in controlling delivery time of home delivery of Pizzas?
problem3)a) How could we enhance productivity in Indian Manufacturing and retail sectors?
b) Describe the concepts of work sampling and time study.
problem4)a) Describe Cycle View of Supply Chain Management. What are the major decisions to be taken for an effective SCM?
b) Bob Fero is the operations analyst for Sell-Rite Discount stores of Washington, D.C. He is presently studying ordering and stocking policies at Sell-Rite’s central warehouse for one of its best-moving items, a child’s toy. Examination of historical supply and demand data for this item indicated and almost constant lead time (LT) of 10 days, and abundant production capacity allowed very consistent production and delivery times. Bob also discovered that demand per day(d) was nearly normally distributed with a mean (d) of 1,250 toys per day with the standard deviation (σd) of 375 toys per day.
i) find out order point for toy if the service level is specified at 90% during lead time.
ii) How much safety stock is provided in your answer in Part A?
Company receives parts from suppliers to be used in its manufacturing departments. The quality control department should perform two operations when shipments and received: Operation A—draw the random sample, package, and deliver to testing, and Operation B—test the materials and issue a disposition report. Time estimates for processing six shipments through quality control are:
Shipment Operation A (hours) Operation B (hours)
1 1.3 0.9
2 1.3 1.1
3 0.8 1.5
4 1.6 1.4
5 1.5 1.0
6 1.2 1.9
problem5) Case problems:
a) Use Johnson’s rule to set sequence of processing the shipments through quality control. (Operations need change over to new jobs at the same time.)
b) How much total time is needed to process six shipments through quality control? What is the idle time on each operation A & B?