Exam 5: Constraint Management

A line that produces several items belonging to the same family is called a:

Table 5.3 King Supply makes four different types of plumbing fixtures: W,X,Y and Z.The contribution margins for these products are: $70 for Product W,$60 for Product X,$90 for Product Y and $100 for Product Z.Fixed overhead is estimated at $5,500 per week.The manufacture of each fixture requires four machines,Machines #1,2,3 and 4.Each of the machines is available for 40 hours a week and there is no setup time required when shifting from the production of one product to any other.The processing requirements to make one unit of each product are shown in the table.Weekly product demand for the next planning period has been forecasted as follows: 70 Ws,60 Xs,50 Ys and 30 Zs. In the questions that follow,the traditional method refers to maximizing the contribution margin per unit for each product,and the bottleneck method refers to maximizing the contribution margin per minute at the bottleneck for each product. -Use the information in Table 5.3.Using the bottleneck method,what is the profit if Burdell manufactures the optimal product mix?

Table 5.3 King Supply makes four different types of plumbing fixtures: W,X,Y and Z.The contribution margins for these products are: $70 for Product W,$60 for Product X,$90 for Product Y and $100 for Product Z.Fixed overhead is estimated at $5,500 per week.The manufacture of each fixture requires four machines,Machines #1,2,3 and 4.Each of the machines is available for 40 hours a week and there is no setup time required when shifting from the production of one product to any other.The processing requirements to make one unit of each product are shown in the table.Weekly product demand for the next planning period has been forecasted as follows: 70 Ws,60 Xs,50 Ys and 30 Zs. In the questions that follow,the traditional method refers to maximizing the contribution margin per unit for each product,and the bottleneck method refers to maximizing the contribution margin per minute at the bottleneck for each product. -Use the information in Table 5.3.Using the bottleneck method,which product should be scheduled first?

The process batch at the constraint in a drum-buffer-rope system should be:

Figure 5.1 The figure above shows the process for paying tuition at a major university.Students receive their bill,for the next term,for review.They are directed to different tables for clarifications,before being asked to pay their tuition at E.The numbers in parentheses are the time in minutes for each step of the process. -Use the information in Figure 5.1.What is the capacity for the A-B-C-E process route?

Line balancing strives to create workstations so that the capacity utilization for the bottleneck is much higher than for the other workstations in the line.

Table 5.3 King Supply makes four different types of plumbing fixtures: W,X,Y and Z.The contribution margins for these products are: $70 for Product W,$60 for Product X,$90 for Product Y and $100 for Product Z.Fixed overhead is estimated at $5,500 per week.The manufacture of each fixture requires four machines,Machines #1,2,3 and 4.Each of the machines is available for 40 hours a week and there is no setup time required when shifting from the production of one product to any other.The processing requirements to make one unit of each product are shown in the table.Weekly product demand for the next planning period has been forecasted as follows: 70 Ws,60 Xs,50 Ys and 30 Zs. In the questions that follow,the traditional method refers to maximizing the contribution margin per unit for each product,and the bottleneck method refers to maximizing the contribution margin per minute at the bottleneck for each product. -Use the information in Table 5.3.Using the traditional method,which product should be scheduled first?

Figure 5.1 The figure above shows the process for paying tuition at a major university.Students receive their bill,for the next term,for review.They are directed to different tables for clarifications,before being asked to pay their tuition at E.The numbers in parentheses are the time in minutes for each step of the process. -Use the information in Figure 5.1.Where would you expect student wait times to occur?

Table 5.3 King Supply makes four different types of plumbing fixtures: W,X,Y and Z.The contribution margins for these products are: $70 for Product W,$60 for Product X,$90 for Product Y and $100 for Product Z.Fixed overhead is estimated at $5,500 per week.The manufacture of each fixture requires four machines,Machines #1,2,3 and 4.Each of the machines is available for 40 hours a week and there is no setup time required when shifting from the production of one product to any other.The processing requirements to make one unit of each product are shown in the table.Weekly product demand for the next planning period has been forecasted as follows: 70 Ws,60 Xs,50 Ys and 30 Zs. In the questions that follow,the traditional method refers to maximizing the contribution margin per unit for each product,and the bottleneck method refers to maximizing the contribution margin per minute at the bottleneck for each product. -Use the information in Table 5.3.Using the bottleneck method,in what sequence should products be scheduled for production?

Figure 5.4 -Use the information in Figure 5.4.What are the required predecessors of activity H?

Managers should produce products with the highest contribution margins or unit sales,provided they have market demand for them.

The fourth step in Theory of Constraints application,"elevate the bottleneck(s)," means that the analyst should:

Table 5.1 A company makes four products that have the following characteristics: Product A sells for $50 but needs $10 of materials and $15 of labor to produce;Product B sells for $75 but needs $30 of materials and $15 of labor to produce;Product C sells for $100 but needs $50 of materials and $30 of labor to produce;Product D sells for $150 but needs $75 of materials and $40 of labor to produce.The processing requirements for each product on each of the four machines are shown in the table. Work centers W,X,Y,and Z are available for 40 hours per week and have no setup time when switching between products.Market demand for each product is 80 units per week.In the questions that follow,the traditional method refers to maximizing the contribution margin per unit for each product,and the bottleneck method refers to maximizing the contribution margin per minute at the bottleneck for each product. -Use the information in Table 5.1.Which work center is of greatest concern to the operations manager?

Table 5.6 Balance the following line for an output rate of five pieces per hour.The times are in minutes (not seconds). -Use the information from Table 5.6.The theoretical minimum number of stations is:

Work should be released into the system when:

Use the process flow diagram to determine which of these events has the greatest net benefit.