Operations Management Test-1

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Economics

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Feb 20, 2024

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1. Aggregate planning in manufacturing ties organizational strategic goals to a production plan. Ans. True 2. A small metal shop operates 10 hours each day, producing 100 parts/hour. If productivity were increased 20%, how many hours would the plant have to work to produce 1000 parts? Ans. between 8 and 9 hours. New production rate = 100 parts/hour + (20% * 100 parts/hour) = 100 parts/hour + (0.20 * 100 parts/hour) = 100 parts/hour + 20 parts/hour = 120 parts/hour Now, we can calculate the number of hours required to produce 1000 parts using the new production rate: Number of hours = Total parts / Production rate = 1000 parts / 120 parts/hour = 8.33 hours Since the metal shop operates for 10 hours each day, it would need to work between 8 and 9 hours to produce 1000 parts. Therefore, the answer is option D. between 8 and 9 hours. 3. The objective of aggregate planning is to meet demand while ________ over the planning period. Ans. minimizing cost 4. Disaggregation is the process of breaking the aggregate plan into greater detail. Ans. True. 5. Dependence on an external source of supply is found in which of the following aggregate planning strategies? Ans. Subcontracting 6. Which of the following statements is true? Ans. The person most responsible for initiating use of interchangeable parts in manufacturing was Eli Whitney. 7. Gibson Valves produces cast bronze valves on an assembly line, currently producing 1600 valves per shift. If the production is increased to 2000 valves per shift, labour productivity will increase by Ans. [(2000-1600)/1600 * 100] % = (0.25*100) % = 25% 8. Which of the following are the primary functions of all organizations? Ans. marketing, production/operations, and finance/accounting 9. Which of the following actions is consistent with the use of pure level strategy? Ans. use inventory to meet demand requirements. 10. Osprey Machine Works has the following demand requirements and other data for the upcoming four quarters. Quarter Demand Previous quarter's output 2500 units 1 2300 Beginning inventory 200 units 2 2400 Stockout (backorder) cost $50 per unit 3 2600 Inventory holding cost $10 per unit at end of quarter 4 2100 Hiring workers $4 per unit Laying off workers $8 per unit Unit cost $30 per unit Overtime $10 extra per unit What is the total cost of pursuing a level aggregate plan over the coming year? Ans. 11. Aggregate planning occurs over the medium or intermediate future of 3 to 18 months. Ans. True 12. The Dulac Box plant produces 500 cypress packing boxes in two 10-hour shifts. What is the productivity of the plant?
Ans. 25 boxes/hr 13. Operation Management is the set of activities that creates value in the form of goods and services by transforming inputs into outputs. Ans. True 14. What is the effort to plan the coordination of demand forecasts with functional areas of the firm and its supply chain? Ans. sales and operations planning 15. The Dulac Box plant produces 500 cypress packing boxes in two 10-hour shifts. Due to higher demand, they have decided to operate three 8-hour shifts instead. They are now able to produce 600 boxes per day. What has happened to productivity? Ans. It has increased by 20%. ( [(600-500)/500]*100% ) 16. Which of the following statements about aggregate planning is true? Ans. Aggregate planning uses the adjustable part of capacity to meet production requirements. 17. The service sector has lower productivity improvements than the manufacturing sector because Ans. services usually are labour-intensive. 18. Which of the following is the best example of a pure service.? Ans. Counselling 19. Martin Manufacturing has implemented several programs to improve its productivity. They have asked you to evaluate the firm's productivity by comparing this year's performance with last year's. The following data are available: Last Year This Year Output 10,500 units 12,100 units Labour Hours 12,000 13,200 Utilities $7,600 $8,250 Capital $83,000 $88,000 Has Martin Manufacturing improved its productivity during the past year? Ans. Output per labor hour: Last Year: 10,500 units / 12,000 labor hours = 0.875 units per labor hour This Year: 12,100 units / 13,200 labor hours = 0.916 units per labor hour Output per dollar of capital: Last Year: 10,500 units / $83,000 = 0.126 units per dollar of capital This Year: 12,100 units / $88,000 = 0.138 units per dollar of capital Yes 20. Productivity in Canada has increased significantly every year since 1973. Ans. False 21. Which of the following statements about aggregate planning is true? Ans. A pure chase strategy allows lower inventories when compared to pure level scheduling. 22. A firm practices the pure chase strategy. Production last quarter was 1000. Demand over the next four quarters is estimated to be 900, 700, 1000, and 1000. Hiring cost is $20 per unit, and firing cost is $5 per unit. Over the next year, the sum of hiring and layoff costs will be Ans. $7500 Quarter 1: Demand = 900 Output (last quarter) = 1000 Layoffs = Output (last quarter) - Demand = 1000 - 900 = 100 units Layoff cost = Layoffs * Firing cost per unit = 100 * $5 = $500 Quarter 2: Demand = 700 Output (last quarter) = 900 (after layoffs) Layoffs = Output (last quarter) - Demand = 900 - 700 = 200 units Layoff cost = Layoffs * Firing cost per unit = 200 * $5 = $1000 Quarter 3:
Demand = 1000 Output (last quarter) = 700 (after layoffs) Hiring = Demand - Output (last quarter) = 1000 - 700 = 300 units Hiring cost = Hiring * Hiring cost per unit = 300 * $20 = $6000 Quarter 4: Demand = 1000 Output (last quarter) = 1000 No hiring or layoffs needed Hiring cost = 0 Layoff cost = 0 Total sum of hiring and layoff costs over the next year: Total cost = Sum of hiring costs + Sum of layoff costs Total cost = $6000 + $500 + $1000 + $0 = $7500 Therefore, the sum of hiring and layoff costs over the next year, assuming the pure chase strategy, will be $7500. 23. The _______ strategy maintains a constant output rate, or workforce level, over the planning horizon. Ans. Level Strategy 24. Technology combined with rapid international communication of news, entertainment, and lifestyles is dramatically increasing the life span of products. Ans. False 25. All organizations, including service firms such as banks and hospitals, have a production function. Ans. True 26. _______ means designing green products and packaging that minimize resource use, can be recycled or reused, and are generally environmentally friendly. Ans. Sustainability 27. Which of the following attributes is most typical of a service? Ans. production and consumption occur simultaneously 28. Which of the following would most likely fall under the scope of only an operations manager? Ans. setting inventory levels 29. Aggregate planning is capacity planning for Ans. the intermediate range. 30. In level scheduling, what is kept uniform from month to month? Ans. production/workforce levels 31. A foundry produces circular utility access hatches (manhole covers). Currently, 120 covers are produced in a 10-hour shift. If labour productivity can be increased by 20%, it would then be Ans. New Labor Productivity = Current Labor Productivity * (1 + Percentage Increase) New Labor Productivity = 12 covers/hr * (1 + 0.20) = 12 covers/hr * 1.20 = 14.4 covers/hr Therefore, if labor productivity is increased by 20%, the new labor productivity would be 14.4 32. Reasons to study Operations Management include Ans. knowing how goods and services are consumed. 33. Among the ethical and social challenges facing operations managers are Ans. honouring financial commitments. providing an efficient workplace. ensuring quality products maintaining a sustainable environment. 34. Planning tasks associated with loading, sequencing, expediting, and dispatching typically fall under Ans. short-range plans. 35. Customer interaction is often high for manufacturing processes, but low for services. Ans. False 36. Which of the following statements is true? Ans. Each manufacturing employee now produces about 20 times more than in 1950. 37. Which of the following aggregate planning strategies is a "capacity option"? Ans. changing inventory levels 38. The purchasing function is concerned with Ans. generating the demand for the organization's products or services. 39. Eagle Fabrication has the following aggregate demand requirements and other data for the upcoming four quarters. Quarter Demand Previous quarter's output
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