What is the drum, buffer and rope concept that comes from the theory of constraint? (Eli goldratt)
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What is the drum, buffer and rope concept that comes from the theory of constraint? (Eli goldratt)
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- Which is most likely true about theory of constraints? a. The theory of constraints does not apply to companies with multiple products because of capacity measurement difficulties. b. In any profit-seeking company, there must be at least one constraint. c. Constraints or bottlenecks stop organizations from selling an infinite number of units or services. d. b & c e. All of the above f. None of the aboveIn a large microelectronics plant, the assembly cell for circuit boards has a demand for 300 units an hour. Two feeder cells supply partsA and B to the assembly cell (one A and one B for each board). Standard containers that look like divided trays are used. A container will hold 22 As or 13 Bs. It takes 13 minutes to fill up a container with As and 22 minutes to fill up a container with Bs. Transit time to the assembly cell is 5 minutes for both A and B. No safety factor is used. Kanbans to be circulated Between Process A and Assembly cell? Kanbans to be circulated Between Process B and Assembly cell?Please solve 2 questions True or false
- In a large microelectronics plant, the assembly cell for circuit boards has a demand for 250 units an hour. Two feeder cells supply parts A and B to the assembly cell (one A and one B for each board). Standard containers that look like divided trays are used. A container will hold 24 As or 10 Bs. It takes 10 minutes to fill up a container with As and 24 minutes to fill up a container with Bs. Transit time to the assembly cell is 5 minutes for both A and B. No safety factor is used. Set up a kanban control system for the assembly process.During an eight-hour shift, 750 non-defective parts are desired as a result of a manufacturing operation. The default operation time is 15 minutes. As the operators of machine are inexperienced, the actual time they take to perform the operation is 20 minutes, and, on average, a fifth of the parts that start to be manufactured are lost. Assuming that each one of the machines used in this operation will not be available for one hour in each shift, determine the number of machines needed.A company is in the business of machining parts that go through various work centers. Suppose work center A feeds work center B with parts. The following times (in minutes) are given for each work center. Work Center Setup time Run time (per part) Move time A 3 0.5 6 B 2 0.1 8 A standard kanban container holds 50 parts that are transferred from work center A to work center B. The demand rate at work center B is four parts per minute. How many kanban containers are needed for this situation? 2. If move time is cut in half, what does this do to the number of containers needed? How much will this change reduce inventory?
- Bectol, Inc. is building a dam. A total of 10 million cuft of dirt is needed to construct the dam. A bulldozer is usedto collect dirt for the dam. Then the dirt is moved via dumpersto the dam site. Only one bulldozer is available, and it rentsfor $100 per hour. Bectol can rent, at $40 per hour, as manydumpers as desired. Each dumper can hold 1,000 cu ft ofdirt. It takes an average of 12 minutes for the bulldozer toload a dumper with dirt, and each dumper an average of fiveminutes to deliver the dirt to the dam and return to the bulldozer. Making appropriate assumptions about exponen-tiality, determine how Bectol can minimize the total expected cost of moving the dirt needed to build the dam.Please solve at least 5 questions also if not possible to answer fullYou own a wheat warehouse with a capacity of 20,000 bushels. At the beginning of month 1, you have 6,000 bushels of wheat. Each month, wheat can be bought and sold at the price per 1000 bushels given in the Table
- Mr. Cherry owns a gas station on a highway in Vermont. In the afternoon hours, thereare, on average, 30 cars per hour passing by the gas station that would like to refuel.However, because there are several other gas stations with similar prices on the highway, potential customers are not willing to wait—if they see that all of the pumps areoccupied, they continue on down the road.The gas station has three pumps that can be used for fueling vehicles, and cars spendfour minutes, on average, parked at a pump (filling up their tank, paying, etc.).a. What is the offered load?b. What is the implied utilization?c. What is the capacity of the gas station (cars per hour)?d. What is the probability that all three pumps are being used by vehicles?e. How many customers are served every hour?f. What is the utilization of the pumps?g. How many pumps should it have to ensure that it captures at least 98 percent of thedemand that drives by the station?Georgia Cabinets manufactures kitchen cabinets that are sold to local dealers throughout the Southeast. Because of a large backlog of orders for oak and cherry cabinets, the company decided to contract with three smaller cabinetmakers to do the final finishing operation. For the three cabinetmakers, the number of hours required to complete all the oak cabinets, the number of hours required to complete all the cherry cabinets, the number of hours available for the final finishing operation, and the cost per hour to perform the work are shown here: Cabinetmaker 1 Cabinetmaker 2 Cabinetmaker 3 Hours required to complete all the oak cabinets 50 44 32 Hours required to complete all the cherry cabinets 61 46 34 Hours available 35 25 30 Cost per hour $36 $43 $56 For example, Cabinetmaker 1 estimates that it will take 50 hours to complete all the oak cabinets and 61 hours to complete all the cherry cabinets. However, Cabinetmaker 1 only has 35 hours available for the final…Georgia Cabinets manufactures kitchen cabinets that are sold to local dealers throughout the Southeast. Because of a large backlog of orders for oak and cherry cabinets, the company decided to contract with three smaller cabinetmakers to do the final finishing operation. For the three cabinetmakers, the number of hours required to complete all the oak cabinets, the number of hours required to complete all the cherry cabinets, the number of hours available for the final finishing operation, and the cost per hour to perform the work are shown here: Cabinetmaker 1 Cabinetmaker 2 Cabinetmaker 3 Hours required to complete all the oak cabinets 47 40 27 Hours required to complete all the cherry cabinets 64 51 36 Hours available 40 30 35 Cost per hour $34 $41 $52 For example, Cabinetmaker 1 estimates it will take 47 hours to complete all the oak cabinets and 64 hours to complete all the cherry cabinets. However, Cabinetmaker 1 only has 40 hours available for the final…