Exam 9: Human Resources, Job Design, and Work Measurement

Standard time is always greater than normal time, due to the inclusion of allowances for personal time, delay, and fatigue.

Work sampling estimates the percent of time that a worker spends on various tasks.

Sample observations of a claims processor made over a 160-hour work month reveal that the worker produced a total of 384 completed claims forms. The performance rating was 90%. The worker was idle 20% of the time (so that idle time should be subtracted from the total time when computing the average observed time). The allowance factor is 10%. What is the standard time per unit?

An assembly line consists of 21 tasks grouped into 5 workstations. The sum of the 21 task times is 90 minutes. The largest assigned cycle time is 20 minutes. What is the efficiency of this line?

A facility is trying to set up an assembly line, and has identified the various tasks, and their relationship to each other, as shown in the following table. Managers wish to produce 600 units per day, working two 8-hour shifts. (a) Draw a network diagram of precedence relationships. (b) Compute the required cycle time per unit in seconds. (c) Compute the minimum number of workstations required to produce 600 units per day. (d) Balance this line using the longest processing time heuristic. (e) What is the efficiency of the line obtained in part (d)?

A bank manager wants to determine the percent of time the bank's tellers are working and idle. He decides to use work sampling, and his initial estimate is that the tellers are idle 22% of the time. Approximately how many observations should be taken to be 95% confident that the results will not be more than 5% away from the true result?

Suppose that the allowance factor for a job is 0.05, and the normal time is 5 hours. What is the standard time?

A work cell is required to make 80 computerized diagnostic assemblies (for installation into hybrid automobiles) each day. The cell currently works an eight-hour shift, of which seven hours are available for productive work. These assemblies require five operations, with times of 1.0, 1.8, 2.4, 2.5, and 1.4 minutes each. What is takt time for this cell?

The objective of warehouse layout is to minimize costs associated with warehouse space.

What design guidelines help retail layouts to maximize customer exposure to products?

________ often calls for fewer but longer days, such as four 10-hour days.

Which of the following is NOT an advantage of work cells?

Kanbans and flow diagrams are both techniques of the visual workplace because they are visual signals that replace printouts and paperwork.

Ambient conditions; spatial layout and functionality; and signs, symbols, and artifacts are all:

Hemo-tech, Inc., a biomedical technology and research laboratory, produces a standard blood filtering device on an assembly-line basis. Six basic tasks are performed along the assembly line. The time to perform each task and the tasks that must immediately precede each task are in the table below. Twenty pumps per 450-minute day must be produced by the assembly line. (a) Draw the network diagram of the precedence relationships. (b) Identify the absolute minimum and maximum cycle times. (c) What is the cycle time required to meet demand? (d) What is the minimum number of workstations required to meet the schedule? (e) Balance this line using the most following tasks heuristic. (f) What is the efficiency of the line obtained in part (e)? (g) Can the efficiency of this solution be improved? Explain.

Why do work cells increase the utilization of equipment and machinery?

Labor standards were pioneered by Frank and Lillian Gilbreth and:

Which of the following is one of the main advantages of a product-oriented layout?

The concept of customizing in a warehouse layout:

________ is the maximum time that the product is allowed at each workstation.