Question 1

A manufacturing cell groups identical machines together to work on products having similar shapes and processing requirements.

Accepted Answer

A manufacturing cell groups different machines together to work on products that go through similar processing steps, not necessarily having similar shapes but requiring similar operations.

Question 2

The efficiency of an assembly line is found by a ratio of the sum of all task times divided by the cycle time.

Accepted Answer

The efficiency of an assembly line is found by a ratio of the cycle time divided by the sum of all task times.

Question 3

A workcenter is a basic production layout format in which similar equipment or functions are grouped together.

Accepted Answer

This statement is true. In a workcenter, equipment or functions that are similar are grouped together to optimize the production process.

Question 4

If the sum of the task times required to produce a product is 45 minutes and the cycle time for the same product is 10 minutes, the theoretical minimum number of workstations is 5 using the assembly-line balancing procedure.

Accepted Answer

The theoretical minimum number of workstations is calculated by dividing the sum of the task times by the cycle time, so 45 minutes / 10 minutes = 4.5, which rounds up to 5 workstations.

Question 5

The assembly-line balancing procedure determines the precedence relationships of manufacturing tasks.

Accepted Answer

The assembly-line balancing procedure is primarily focused on distributing tasks among workstations in a way that each has an approximately equal amount of work, not on determining the precedence relationships of manufacturing tasks. Precedence relationships, which dictate the order in which tasks must be performed, are typically established before the balancing process.

Question 6

A manufacturing cell layout is similar to the workcenter and assembly-line layouts.

Accepted Answer

A manufacturing cell layout is a type of layout where machines and workstations are grouped together based on the specific tasks they perform. It is similar to workcenter and assembly-line layouts as they all aim to improve efficiency by grouping similar tasks together to minimize unnecessary movement and reduce lead times.

Question 7

Assembly lines are a special case of product layout.

Accepted Answer

Assembly lines are a type of product layout where machinery and workers are arranged in a specific sequence to produce goods in a continuous flow.

Question 8

In balancing an assembly line, workstation cycle time has to be less than the time between successive units coming off the end of the line.

Accepted Answer

In balancing an assembly line, workstation cycle time has to be equal to or less than the time between successive units coming off the end of the line to ensure a smooth and continuous production flow without bottlenecks or idle time.

Question 9

For the purposes of assembly-line balancing, cycle time is found by dividing production time per day by the required units of output per day.

Accepted Answer

Cycle time is calculated by dividing the total production time available by the required units of output per day.

Question 10

In designing a production line, a mixed-model line layout is used by JIT manufacturers.

Accepted Answer

A mixed-model line layout is used by JIT manufacturers to efficiently produce multiple product models on the same assembly line. This allows for better workflow and minimizes inventory waste.

Question 11

In designing a production layout a flexible line layout might have the shape of a "U".

Accepted Answer

A "U" shaped layout allows for efficient material flow and promotes flexibility in production as it allows for easy access and movement of materials and personnel.

Question 12

Systematic layout planning is used to design products.

Accepted Answer

Systematic layout planning is not used to design products, it is a method used in designing layouts and floor plans for factories, warehouses, and other industrial facilities.

Question 13

Assembly lines are a special case of a project layout.

Accepted Answer

Assembly lines are a special case of a product layout, not a project layout, as they are designed for the mass production of a specific product.

Question 14

An assembly-line layout is similar to the basic production layout format of flow-shop layout.

Accepted Answer

An assembly-line layout is a type of flow-shop layout, where the production process is divided into a series of individual tasks performed in a sequence, with each task being carried out by a specialized worker or machine. Therefore, it is similar to the basic production layout format of flow-shop layout.

Question 15

The term "assembly line" refers to progressive assembly linked by some material handling device.

Accepted Answer

The term "assembly line" describes a manufacturing process in which each worker performs a specific task in a continuous flow of production, often connected by a conveyor belt or other material handling device.

Question 16

If the sum of the task times required to produce a product is 80 minutes and the cycle time for the same product is 15 minutes, the theoretical minimum number of workstations is 8 using the assembly-line balancing procedure.

Accepted Answer

The theoretical minimum number of workstations can be calculated by dividing the total task time by the cycle time, which gives 80/15 = 5.33. This means that we need 5.33 workstations, but since we cannot have a fraction of a workstation, we need to round up to 6. Therefore, the correct answer is B, false.

Question 17

The first step in balancing an assembly line is to specify the precedence relationships among tasks to be performed on the line.

Accepted Answer

This is true. Before balancing an assembly line, it is necessary to determine the sequence of tasks and their relationship to each other. This is known as developing a precedence diagram.

Question 18

In assembly-line balancing, the theoretical minimum number of workstations is found by a ratio of the sum of all task times divided by the cycle time.

Accepted Answer

This is the formula for calculating the minimum number of workstations in assembly-line balancing, also known as the "theoretical minimum."

Question 19

A project layout is similar to the basic production layout format of the workcenter.

Accepted Answer

A project layout is designed for one-time, large-scale operations, focusing on the specific needs and location of the project, whereas a workcenter (or job shop) layout is organized around particular types of activities or processes suitable for small-scale, custom products or services.

Question 20

A workcenter layout is similar to the basic production layout format of job-shop.

Accepted Answer

A workcenter layout, also known as a process layout, is similar to the job-shop production layout format where machines and equipment are arranged based on similar functions and processes. This layout allows for flexibility in producing a variety of products or product variations.

Quiz 8: Facility Layout