BUAD 341: Lean Operations Exam 3 Review

A work cell at Chris Ellis Commercial Laundry has a workstation with two machines, and each unit produced at the station needs to be processed by both of the machines. (The same unit cannot be worked on by both machines simultaneously.) Each machine has a production capacity of 4 units per hour. The throughput time of the work cell = ___ minutes per unit (enter your response as a whole number).

30 (60/4) = 15 15 + 15 = 30

If a plant has an effective capacity of 6,500 and an efficiency of 88%, then its actual (planned output = ____ units (enter your response as a whole number)

5720 (6500*0.88)

Under ideal conditions, a service bay at a Fast Lube can serve 6 cars per hour. The effective capacity of a Fast Lube service bay is 5.5 cars per hour, with efficiency known to be 0.88. The minimum number of service bays Fast Lube needs to achieve an anticipated production of 200 cars per 8-hour day = [ service bays (enter you response rounded up to the next whole number).

6 (200) / (5.5 * 0.88 * 8)

Southeastern Oklahoma State University's business program has the facilities and faculty to handle an enrollment of 2,200 new students per semester However, in an effort to limit class sizes to a reasonable level (under 200, generally), Southeastern's dean, Holly Lutze, placed a ceiling on enrollment of 1,600 new studentsAlthough there was ample demand for business courses last semester, conflicting schedules allowed only 1,440 new students to take business courses. The utilization rate for Southeastern % (enter your response as a percentage rounded to one decimal place)

65.5% (1440/2200)*100

Southeastern Oklahoma State University's business program has the facilities and faculty to handle an enrollment of 2,200 new students per semester However, in an effort to limit class sizes to a reasonable level (under 200, generally), Southeastern's dean, Holly Lutze, placed a ceiling on enrollment of 1,600 new studentsAlthough there was ample demand for business courses last semester, conflicting schedules allowed only 1,440 new students to take business courses. The efficiency rate for southeastern = ____% (enter your response as a percentage rounded to one decimal place)

90% (1440/1600)*100

Assume a two-step process: (i) step 1 with a capacity of 5 parts/hr and (il) step 2 with a process time of 10 mins. The throughput time for this two-step process is. A. 22 minutes B. 15 minutes C. 12 minutes D. 10 minutes E. 5 minutes

A. 22 minutes (60/5) + 10

The staff training center at a large regional hospital provides training sessions in CPR to all employees. Assume that the capacily of this training sy was designed to be 1200 employees per year. Since the training center was first put into use, the program has become more complex, so that 960 represents the most employees that can be trained per year. in the past year, 850 employees were trained. The efficiency of this system is approximately ____ and its utilization is approximately ____. A. 79.2 percent, 90.5 percent B. 89.5 percent, 70.8 percent C. 90.5 percent: 79.2 percent D. 950 employees: 850 employees E. 87.5 percent, 950 employees

B. 89.5 percent, 70.8 percent Efficiency = (850/960)*100 Utilization = (850/1200)*100

Effective capacity x Efficiency equals: A. utilization B. expected output C. design capacity D. eficient capacity E. actual capacity

B. Expected output

Assume a two-step process: (i) step 1 with a capacity of 5 parts/hr and (ii) step 2 with a process time of 10 mins. The bottleneck time for this two-step process is... A. 22 minutes B. 15 minutes C. 12 minutes D. 10 minutes E. 5 minutes

C. 12 minutes (60/5)

Christopher's Cranks uses a machine that can produce 70 cranks per hour. The firm operates 12 hours per day, five days per week. Due to regula scheduled preventive maintenance, the firm expects the machine to be running during approximately 94% of the available time. Based on experie with other products, the firm expects to achieve an efficiency level for the cranks of 75%. What is the expected weekly output of cranks for this company? (Round answer to the nearest whole unit.) A. 4,145 B. 3,150 C. 2,961 D. 1,974 E. 3,948

C. 2,961 1. Calculate the available time per week (12 hours per day, 5 days a week): Available Time = 12 hours/day * 5 days/week = 60 hours/week 2. Take into account the expected machine uptime due to maintenance (94%): Machine Uptime = 0.94 * Available Time = 0.94 * 60 hours/week = 56.4 hours/week 3. Calculate the effective capacity based on the machine's production rate (70 cranks per hour): Effective Capacity = 70 cranks/hour * 56.4 hours/week = 3,948 cranks/week 4. Apply the expected efficiency (75%): Expected Weekly Output = Effective Capacity * Efficiency Expected Weekly Output = 3,948 cranks/week * 0.75 = 2,961 cranks/week

Which of the following is not one of Goldratt's scheduling rules? A. Utilization and activation of a resource are not the same B. Priorities can be set only by examining the system's constraints C. Do not balance flow, balance capacity D. An hour saved at a non-bottleneck is a mirage E. Bottlenecks govern both throughput and inventory

C. Do not balance flow, balance capacity

What is the theoretical maximum output of a system in a given period under ideal conditions? A. effective capacity B. efficiency C. design capacity D. utilization

C. design capacity

Design capacity is the: A. minimum usable capacity of a particular facility B. capacity a firm expects to achieve given the current operating constraints C. theoretical maximum output of a system in a given period under ideal conditions D. sum of all of the organization's inputs E. average output that can be achieved under ideal conditions

C. theoretical maximum output of a system in a given period under ideal conditions

Which of the following corresponds to "Elevating" the constraint? A. Tying the release of raw materials to the constraint B. Finding the step with the least capacity C. Moving quality control in front of the constraint D. Adding capacity at the constraint E. All of the above

D. Adding capacity at the constraint

When is a bottleneck also the constraint? A. Never B. Always C. When there are at least two bottlenecks in the system D. When there is only one bottleneck in the system

D. When there is only one bottleneck in the system

Utilization will typically be lower than efficiency because: A. effective capacity is greater than design capacity. B. effective capacity equals design capacity. C. expected output is less than actual output. D. expected output is less than rated capacity. E. effective capacity is less than design capacity.

E. effective capacity is less than design capacity.

A production line at V. J. Sugumaran's machine shop has three stations. The first station can process a unit in 6 minutes. The second station has two identical machines, each of which can process a unit in 10 minutes (each unit only needs to be processed on one of the two machines). The third station can process a unit in 10 minutes. ___ is the bottleneck station, with a bottleneck time of ___ minutes per unit (enter your response as a whole number).

Station 3; 10

True or False? Design capacity is the theoretical maximum output of a system in a given period under ideal conditions.

True