Question 1

Process-focused layouts are used for?
A) Production of different products
B) Production in small volumes
C) Both production of different products and in small volume
D) Neither production of different products nor production in small volume

Accepted Answer

Process-focused layouts are designed to handle a variety of products, which makes them flexible enough to be used for production of different products. They are also beneficial for production in small volumes, as they allow for customization and variation in the production process.

Question 2

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C). The tasks have processing times of 12, 15, and 10 minutes per unit, respectively. If the assembly line operates for 480 minutes per day with a desired output of 50 units per day, what is the takt time?
A) 0.1 units per minute
B) 13 units per minute
C) 9.6 units per minute
D) Cannot be determined from the information given

Accepted Answer

Takt time is defined as the available production time divided by the customer demand. In this case, the available production time is 480 minutes and the desired output is 50 units per day.

So, the takt time is:

Takt time = Available production time / Customer demand
          = 480 minutes / 50 units per day
          = 9.6 units per minute

Therefore, the best choice is C.

Question 3

If an assembly line has an efficiency of 80% with 3 workcenters, how would adding a fourth workcenter affect assembly line efficiency?
A) Efficiency would increase
B) Efficiency would decrease
C) Efficiency would not change
D) Efficiency would increase, but may become infeasible

Accepted Answer

The answer of If an assembly line has an efficiency...

Question 4

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C). The tasks have processing times of 12, 15, and 10 minutes per unit, respectively. If the assembly line operates for 480 minutes per day with a desired output of 50 units per day, what is assembly line efficiency?
A) Less than 90%
B) 96%
C) Greater than 98%
D) Cannot be determined from the information given

Accepted Answer

The answer of Assume that an assembly line has three...

Question 5

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C). The tasks have processing times of 7, 17, and 6 minutes per unit, respectively. What is the sum of task times?
A) 30 minutes per unit
B) 10 minutes per unit
C) 6 minutes per unit
D) Cannot be determined from the information given

Accepted Answer

The sum of task times is calculated by adding the processing times of tasks A, B, and C: 7 + 17 + 6 = 30 minutes per unit.

Question 6

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C). The tasks have processing times of 9, 9, and 11 minutes per unit, respectively. Which task is the bottleneck?
A) A
B) Both A and B
C) C
D) Cannot be determined from the information given

Accepted Answer

The task with the longest processing time per unit is known as the bottleneck, as it sets the pace for the entire assembly line. In this case, Task C has a processing time of 11 minutes per unit, which is longer than either Task A or B. Therefore, Task C is the bottleneck.

Question 7

Wait time in a process-focused layout is likely to be ______ when compared to a product-focused layout?
A) Shorter
B) Longer
C) About the same
D) Wait times cannot be compared between the two layouts

Accepted Answer

In a process-focused layout, the equipment and resources are organized based on the sequence of operations required to produce a variety of products. This means that each product is likely to follow a different path through the facility, leading to longer wait times as products may have to wait for certain processes to become available. In contrast, in a product-focused layout, the arrangement of equipment and resources is organized around specific products or product families, which allows for greater efficiency and shorter wait times.

Question 8

A focus of material flow in a process-focused layout should be on?
A) Placing frequently used departments close to each other
B) Placing rarely used departments close to each other
C) Placing rarely used departments far from each other
D) Placing frequently used departments far from each other

Accepted Answer

In a process-focused layout, the focus should be on grouping together similar activities or departments. Placing frequently used departments close to each other will minimize the material movement and increase efficiency.

Question 9

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C). The tasks have processing times of 9, 9, and 11 minutes per unit, respectively. If the assembly operates for 400 minutes per day with a desired output of 70 units per day, what is the efficiency of the assembly line?
A) 84%
B) 64%
C) 94%
D) Cannot be determined from the information given

Accepted Answer

The total time required to produce 70 units is 70 units * 11 minutes/unit = 770 minutes. The assembly line operates for 400 minutes, so the efficiency is (400/770) * 100% = 51.95%. However, since the question asks for the efficiency of the assembly line based on the desired output, the correct calculation should consider the bottleneck task, which is task C with 11 minutes. The efficiency is calculated as (70 units * 11 minutes/unit) / (3 tasks * 400 minutes) * 100% = 84%.

Question 10

If an assembly line has an efficiency of 80% with 3 workcenters, how would removing a workcenter affect efficiency?
A) Efficiency would increase
B) Efficiency would decrease
C) Efficiency would not change
D) Efficiency would increase, but may become infeasible

Accepted Answer

The answer of If an assembly line has an efficiency...

Question 11

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C). The tasks have processing times of 12, 15, and 10 minutes per unit, respectively. Which task is the bottleneck?
A) A
B) B
C) C
D) Cannot be determined from the information given

Accepted Answer

The bottleneck is the task that takes the longest time per unit. In this case, Task B takes 15 minutes per unit, which is longer than either Task A (12 minutes per unit) or Task C (10 minutes per unit). Therefore, Task B is the bottleneck.

Question 12

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C). The tasks have processing times of 9, 9, and 11 minutes per unit, respectively. If the assembly operates for 400 minutes per day with a desired output of 70 units per day, what is minimum number of workstations?
A) 4
B) 6
C) 8
D) Cannot be determined from the information given

Accepted Answer

We can use the basic formula for calculating the minimum number of workstations:

Minimum number of workstations = (Total processing time)/(Time available per day)

Total processing time = Processing time per unit * Desired output per day 
Total processing time = (9 + 9 + 11) * 70 = 1890

Time available per day = 400 minutes 
Minimum number of workstations = 1890/400 = 4.725

Since we cannot have a fractional number of workstations, we must round up to the nearest whole number. Therefore, the minimum number of workstations required is 5.

However, the question asks for the minimum number of workstations, not the closest integer. We need to check if there is a better configuration that can be used.

By calculating the cycle time, we can determine if the processing times can be combined in a way that reduces the total number of workstations.

Cycle time = Time available per day / Desired output per day 
Cycle time = 400/70 = 5.71 minutes

We can use the following table to calculate the cycle time for each task combination:

Task combination	Processing time per unit	Cycle time
A	9	5.71
B	9	5.71
C	11	5.71
AB	18	11.43
AC	20	11.43
BC	20	11.43
ABC	29	33.33

Based on the table, the best combination is AB, which has a cycle time of 11.43 minutes. Therefore, the minimum number of workstations required is:

Minimum number of workstations = (Total processing time for AB)/(Time available per day) 
Minimum number of workstations = 1260/400 = 3.15

Rounding up to the nearest whole number, the minimum number of workstations required is 4.

Since option B is the only one that is equal to or greater than 4, the answer is B (6 workstations).

Question 13

If an assembly line has a target takt time of 10 minutes per unit (due to capacity constraints), how many units per day can be produced? Assume that a production day is 480 minutes.
A) 10 units
B) 48 units
C) 400 units
D) Cannot be determined from the information given

Accepted Answer

To find the number of units that can be produced in a day, we need to divide the total available time by the takt time:

480 minutes / 10 minutes per unit = 48 units per day.

Therefore, the correct answer is B).

Question 14

Takt time is calculated by which of the following?
A) Desired output per day/Daily operating time
B) Cycle time/Daily operating time
C) Daily operating time/Desired output per day
D) Sum of all task times/Cycle time

Accepted Answer

Takt time is calculated by dividing the daily operating time by the desired output per day, which helps in aligning production pace with customer demand.

Question 15

If an assembly line operates for 420 minutes per day and its demand forecast calls for production of 20 units per day, what is the assembly line's takt time?
A) 420 minutes per unit
B) 20 minutes per unit
C) 21 minutes per unit
D) 0.05 minutes per units

Accepted Answer

Takt time is calculated by dividing the available production time by the daily demand. Takt time = 420 minutes / 20 units = 21 minutes per unit. Therefore, the correct answer is C.

Question 16

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C). The tasks have processing times of 9, 9, and 11 minutes per unit, respectively. If the assembly line operates for 400 minutes per day with a desired output of 70 units per day, what is the takt time?
A) 13.8 units per minute
B) 5.7 units per minute
C) 0.4 units per minute
D) Cannot be determined from the information given

Accepted Answer

Takt time = available production time per day ÷ desired output per day
Available production time per day = 400 minutes
Desired output per day = 70 units
Thus, takt time = 400 minutes ÷ 70 units = 5.7 units per minute.

Question 17

Assembly line efficiency is calculated by which of the following?
A) Takt time/(Sum of all task times x Number of workcenters)
B) Sum of all task times + (Number of workcenters x Takt time)
C) Number of workcenters/Sum of all task times
D) Sum of all task times/(Number of workcenters x Takt time)

Accepted Answer

Assembly line efficiency is calculated by dividing the sum of all task times by the product of the number of workcenters and takt time.

Question 18

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C). The tasks have processing times of 12, 15, and 10 minutes per unit, respectively. If the assembly line operates for 480 minutes per day with a desired output of 50 units per day, what is minimum number of workstations?
A) 1
B) 3
C) 4
D) Cannot be determined from the information given

Accepted Answer

The total time to complete one unit is 12 + 15 + 10 = 37 minutes. To produce 50 units, 50 * 37 = 1850 minutes are needed. With 480 minutes available per workstation, at least 1850 / 480 = 3.85, rounded up to 4 workstations are needed.

Question 19

Product-focused process layouts can lead to all of the following effects except?
A) Decreased worker injuries
B) Worker turnover
C) Worker boredom
D) Lower worker job satisfaction

Accepted Answer

Product-focused process layouts do not necessarily have a direct impact on worker injuries. However, they can potentially lead to worker turnover, boredom, and lower job satisfaction due to the repetitive nature of the work and limited opportunities for skill development and job variety.

Question 20

A good process-focused layout should seek to?
A) Maximize product lead times
B) Maximize WIP inventory
C) Minimize time in system
D) Minimize total distance traveled

Accepted Answer

The answer of A good process-focused layout should seek to?
A)...

Quiz 8: Material Flow Analysis and Facility Layouts

Process-focused layouts are used for?

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C) . The tasks have processing times of 12, 15, and 10 minutes per unit, respectively. If the assembly line operates for 480 minutes per day with a desired output of 50 units per day, what is the takt time?

If an assembly line has an efficiency of 80% with 3 workcenters, how would adding a fourth workcenter affect assembly line efficiency?

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C) . The tasks have processing times of 7, 17, and 6 minutes per unit, respectively. What is the sum of task times?

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C) . The tasks have processing times of 9, 9, and 11 minutes per unit, respectively. Which task is the bottleneck?

Wait time in a process-focused layout is likely to be ______ when compared to a product-focused layout?

A focus of material flow in a process-focused layout should be on?

If an assembly line has an efficiency of 80% with 3 workcenters, how would removing a workcenter affect efficiency?

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C) . The tasks have processing times of 12, 15, and 10 minutes per unit, respectively. Which task is the bottleneck?

If an assembly line has a target takt time of 10 minutes per unit (due to capacity constraints) , how many units per day can be produced? Assume that a production day is 480 minutes.

Takt time is calculated by which of the following?

If an assembly line operates for 420 minutes per day and its demand forecast calls for production of 20 units per day, what is the assembly line's takt time?

Assume that an assembly line has three tasks that must be completed (in order, A, B, and C) . The tasks have processing times of 9, 9, and 11 minutes per unit, respectively. If the assembly line operates for 400 minutes per day with a desired output of 70 units per day, what is the takt time?

Assembly line efficiency is calculated by which of the following?

Product-focused process layouts can lead to all of the following effects except?

A good process-focused layout should seek to?