d. Use the calculated cycle time. Assign tasks to workstations on the basis of most following tasks. Use shortest processing time as a tiebreaker. If ties still exist, assume indifference in choice. Work stations Following Tasks II II IV e. Compute the percent idle time and percent efficiency for the assignment in part d. Note: if the calculated cycle time and the actual bottleneck station time are different, use the actual bottleneck time in your calculations. (Round your answers to 2 decimal places) Idle percentage Efficiency %
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As part of a major plant renovation project, the industrial engineering department has been asked to balance a revised assembly operation to achieve an output of 230 units per 8-hour day. Task times and precedence relationships are as follows:
Task | Duration (minutes) |
Immediate Predecessor |
a | 0.2 | - |
b | 0.6 | a |
c | 0.4 | b |
d | 0.7 | - |
e | 1.6 | d |
f | 1.8 | c |
g | 2 | e, f |
Since you have posted a question with multiple sub-parts, we will solve the first three subparts for you. To get the remaining sub-part solved please repost the complete question and mention the sub-parts to be solved.
Assigning each task to a workstation within an assembly line to fulfill the necessary production rate and to achieve a minimum amount of idle time is known as assembly line balance. Line balancing is the process by which tasks are delegated to work stations along the assembly line such that each has roughly the same amount of work.
The advantages of assembly line balancing are:
- improved effectiveness
- A rise in productivity
- Potentially higher earnings and lower costs
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- 1. What is the outcome when a bottleneck resource is augmented with more capacity? 2. Which of the following statements are true? a) Installed capacity in service systems are always based on peak demand b) Service systems designed to handle average capacity will be more effective c) Improving effectiveness of a service will require greater investment of capacity d) None of the above 3. The arrival rate at the second server in a two stage serial queuing system is a. Service rate of server 1 b. Same as arrival rate at server 1 c. Minimum of service rate and arrival rate at server 1 d. Cannot be determined In a worker paced assembly line, consider a situation where the daily requirement has suddenly increased. Which of the following statements will be true? 4. In a worker paced assembly line, consider a situation where the daily requirement has suddenly increased. Which of the following statements will be true? a) The required cycle time will also increase proportionally b) The…At the Children’s Hospital in Seattle, there are, on average, 60 births per week. Mother and child stay, on average, two days before they leave the hospital. At the Swedish Hospital (also in Seattle), the average number of births per week is 210. Mothers and children stay in the hospital for two days, on average.a. How many new mothers, on average, are staying at the Children’s Hospital?b. How many new mothers, on average, are staying at the Swedish Hospital?c. The directors of the two hospitals are negotiating to unify the maternity wards of the two hospitals. They believe this will help reduce the number of new mothers staying in the unified ward. Are they correct? How many new mothers will stay, on average, in the unified ward? You may assume that the average number of births and the length of stay of the new mothers will not change.A Company that makes shopping carts for supermarkets and other stores recently purchased some new equipment that reduces the labor content of the jobs needed to produce the shopping carts. Prior to buying the new equipment, the company used 7 workers, who produced an average of 87 carts per hour. Workers receive $15 per hour, and machine coast was $43 per hour. With the new equipment, it was possible to transfer one of the workers to another department, and equipment cost increased by $14 per hour while output increased by four carts per hour. a) Compute the multifactor productivity (MFP) (labor plus equipment) under the Prior to buying the new equipment. The MFP (carts/S) = Blank 1 (round to 4 decimal places). b) Compute the productivity changes between the Prior to and after buying the new equipment. The productivity growth = Blank 2% (round to 2 decimal places) Blank 1 Add your answer Blank 2 Add your answer
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- The following build-up diagram tracks the number of customers for a single-server queueing system (e.g., an ATM machine) from 10:00am to 10:15am on a certain day. The number of customers shown in the chart includes both those in service and waiting in line. Build-up diagram # of Customers in system (in service + waiting) 3 2 1 0 10:00 10:01 10:02 10:03 10:04 10:07 10:09 We will call the customer who arrived the earliest during this time span the first customer, the customer who arrived the second earliest the second customer, etc.. The service discipline is first-come-first-served (FCFS). According to the diagram, how long did the second customer have to wait (in minutes) before he can enter service?44. US Airlines receives an average of 500 calls per hourfrom customers who want to make reservations, wherethe times between calls follow an exponential distribution. It takes an average of three minutes to handleeach call. Each customer who buys a ticket contributes$100 to US Airlines profit. It costs $15 per hour tostaff a telephone line. Any customer who receives abusy signal will purchase a ticket from another airline. How many telephone lines should US Airlineshave? Base your answer on an appropriate simulation.Does it matter whether the service times are exponentially distributed or gamma distributed? Experimentto find out.A single server queuing system with a Poisson arrival rate and exponential service time has an average arrival rate of 6 customers per hour and an average service rate of 15 customers per hour. The average length of time customers will spend in the system is: O a. 2.667 minutes O b. 0.1111 minutes O c. 6.667 minutes O d. 0.04444 minutes