COB 300 Operations Chp 5 EXAM QUESTIONS AND ANSWERS WITH RATIONALES|ALREDY GRADED A+

COB 300 Operations Chp 5 EXAM QUESTIONS AND ANSWERS WITH RATIONALES|ALREDY GRADED A+ Product-process matrix - ANSWER- a framework depicting when the different production process types are typically used, depending on product volume and how standardized the product is. the horizontal access shows the volume of a particular product. The vertical access shows standardization, variations in the product that is produced. This is measured in terms of differences. Highly Standardized is highly similar. Low standardized are different in their processes of production. it is desirable to design processes along the diagonal. Depending on where your product lands (medium product volume/product standardization would land in the manufacturing cell) determines the environment you should use. Some of the layouts span across large areas of this framework. special-purpose equipment - ANSWER- more specialized, often available as an alternative to a general-purpose machine. Example: special-purpose drill, drill press break-even analysis - ANSWER- Step 1: Find the demand by comparing two processes. 2500 + 25 U = 2600 + 26 U, solve for U to find demand. Step 2: Find the one with less cost for demand of less then or greater then the demand. The point where we are indifferent between two options. the process of evaluating different production level trade-offs in order to break even. Must consider the cost of the equipment, the setup time, and the time per unit. Choose among alternative processes or equipment. Presents alternative profits and losses due to the number of units produced or sold. Depends on demand, most suited for large initial investments and fixed costs, when variable costs are reasonably proportional to the number of units produced. can approach at cost minimization or profit maximization. break-even analysis example: Given the following options 1. Buy the part for 200 per unit 2. buy a machine and make the part for 75$ per unit, where the machine costs 80,000 3. buy a machine center and make the part for 15$ per unit, where the center costs 200,000 Given demand of over 2,000 units, what is the best option for lowest cost? Given demand between 640-2,000 units, what is the best option for lowest cost? Given demand under 640 units, what is the best option for lowest cost? - ANSWER- With a demand of over 2,000 units, the costs are as followed: 1. 200 per unit * demand of 2,001= 400,200 2. 75 per unit * demand of 2,001 + 80,000= 230,075 3. 15 per unit * demand of 2,001 + 200,000= 230,015 So buying the machine center is the best option. With a demand between 640-2,000 units, the costs are as followed: 1. 200 per unit * demand of 641= 128,200 2. 75 per unit * demand of 641 + 80,000= 128,075 3. 15 per unit * demand of 641 + 200,000= 209,615 So buying just one machine is the best option. With a demand under 640 units, the costs are as followed: 1. 200 per unit * demand of 639= 127, 800 2. 75 per unit * demand of 639 + 80,000= 127,925 3. 15 per unit * demand of 639 + 200,000= 209,585 So buying the product from someone else is the best option. Manufacturing process flow design - ANSWER- evaluates the specific processes that raw materials, parts and sub assemblies follow as they move through the plant. Design is made up of: assembly drawing, assembly chart, operation and route sheet, and flow process charts. Focus should be on identifying activities that can be minimized or eliminated. Fewer the moves, delays and storage, the better the flow. Breakeven analysis example: 3 different processes Process: 1, fixed cost of 18,500 VC 35 Process: 2, fixed cost of 20,000 VC 25 Process: 3, fixed costs 23,000 VC 20 Which production process should we select? Getting breakeven point between 1 & 2? If the demand is above 150, which process should we select? Between process 2 + 3, above 600? Above 300 for 1 & 3? - ANSWER- Breakeven point between process 1 & 2: 18,500 + 35 U = 20,000 + 25 U Where U= 150 (Demand of more then 150) 18,500 + 35 (151) = 20,000 + 25 ( 151) 23785 = 23775 Process 2 better Above 600? Comparing! 20,000 + 25 U= 23,000 + 20 U 20,000 + 25 (601)= 23,000 + 20 (601) 35025= 35020 Process 3 is better Above 300? 18,500 + 35 U = 23,000 + 25 U 18,500 + 35 (301) = 23,000 + 25 (301) 29035 = 30525 Process 1 is better assembly drawing - ANSWER- exploding view of the product showing its component parts assembly chart - ANSWER- uses the information presented in the assembly drawing and defines how parts go together, their order of assembly, and often the overall material flow pattern. Specifies specific parts and where they come into play in the production process, unlike the process flowchart where it shows the overall product design. operations and route sheet - ANSWER- specifies operations and process routing for a particular part. Conveys type of equipment, tooling and operations required to complete the part. Specifically for just a part, shows the flow to complete the part, not the whole product. process flowchart - ANSWER- shows what happens to the product as it progresses through the productive facility. The fewer the moves, the better the flow. shows material received from supplier all the way through finished good. Process analysis involves adjusting the capacities and balance among different parts of the process to maximize output or minimize the costs with available resources. Our company supplies a component from our emerging plant to several large auto manufacturers. This component is assembled in a shop by 15 workers working an eighthour shift on an assembly line that moves at the rate of 150 components per hour.