(4a) A manufacturer plans to have three workstations in an assembly line requiring activities to be done according to the precedence diagram given below. The activity times in minutes are given above the activity numbers in circles. Give the allocation of activities to the three workstations and write down the cycle time of the line. 0.6 0.7 2 4 0.2 0.6 0.4 8 0.4 0.5 0.1 3 5 7 Cycle Time = (4b) If the customer demand is 410 assemblies in 480 minutes, can you meet the demand with your cycle time? If not, describe how you would solve this problem?

It is currently day 10 in the production calendar of the Machine Shop. Three orders(A, B, and C) are to be processed at a particular machine tool. The orders arrived in thesequence A-B-C. The table below indicates the process time remaining and productioncalendar due date for each order. Determine the sequence of the orders that would bescheduled using the following priority control rules: (a) first-come-first-serve, (b) earliest due date, (c) shortest processing time, (d) least slack time, and (e) critical ratio

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Q1) For the Lath Machine operations shown in the table below: > Write the operation name > Locate and place the arrows showing the process variables in machining (v, f, d) on the operation sketch, stating process var.ables name. > State the parts in lathe machine that is responsible (provides) the motion for each variable, following the solved example. process variables Lathe part provide Operation sketch name motion Cutting speed (V) Headstock Velocity f Depth of cut (f) Feed rate Cross slide Tool Feed Depth of cut (d) Carriage Example Operation name : Straight turning WORK PECE Operation name : Operation name :

Processing times (including setup times) and due dates for six jobs waiting to be processed at a work centre are given in the table. The average tardiness (in days) using shortest processing time rule is (correct to two decimal places). Job Processing time (days) Due date (days) 3 8 7 16 4 4 D 9 18 E 17 F 13 19 B.

The demand of a certain part is 1000 parts/year and its cost is 1000/part. The orders are placed based on the economic order quantity (EOQ). The cost of ordering is 100/order and the lead time for receiving the orders is 5 days. If the holding cost is 20/part/year, the inventory level for placing the orders is (round off to the nearest integer) .parts. Ans. (14)

The following jobs are waiting to be processed at a small machine center: JOB 10 20 30 40 50 DUE DATE 260 254 260 265 275 days (round your response to one decimal place). days (round your response to one decimal place). DURATION (DAYS) 18 T 22 14 32 All dates are specified as manufacturing planning calendar days. Assume that all jobs arrived on day 200 (yesterday) in the order shown but are not scheduled to begin until day 201 (today). a) Sequence the jobs according to LPT. According to the LPT rule, the sequence of jobs should be 50, 20, 10, 30, 40 b) What is the average completion (flow) time? The average completion (flow) time is c) What is the average job lateness? The average job lateness is d) What is the average number of jobs in the system? The average number of jobs in the system is jobs (round your response to one decimal place). 62446

Solve using graphical method (Resolution & Composition).

The following four jobs must be processed through a three-machine flow shop.MachineJob A B C1 4 262 2 373 6 564 3 48Find the optimal sequencing of the jobs in order to minimize the makespan.What is the makespan at the optimal solution? Draw a Gantt chart illustrating yoursolution.

The annual demand of valves per year in a company is 10,000 units. The current order quantity is 400 valves per order. The holding cost is Rs. 24 per valve per year and the ordering cost is Rs. 400 per order. If the current order quantity is changed to Economic Order Quantity, then the saving in the total cost of inventory per year will be Rs. places). (round off to two decimal