Question 1

The ultimate goal of a lean system is to achieve a balanced,rapid flow of materials through the system.

Accepted Answer

This is one of the main principles of lean manufacturing. The goal is to eliminate waste and optimize the flow of materials (as well as information and people) in order to maximize value for the customer. This includes achieving a balanced and rapid flow of materials through the system.

Question 2

A major difference between kanban and MRP in scheduling the products to be built is that kanban is primarily a manual system.

Accepted Answer

Kanban is a visual workflow management method often using physical cards or boards, while MRP (Material Requirements Planning) is a computerized system for production planning and inventory control.

Question 3

A benefit of small lot sizes in JIT systems is that each product is produced less frequently.

Accepted Answer

Small lot sizes in JIT systems actually mean that products are produced more frequently in smaller quantities, which helps reduce inventory levels and lead times.

Question 4

JIT refers to a production system in which goods arrive for processing just as the preceding batch is completed.

Accepted Answer

JIT (Just-In-Time) is a production system where inventory is minimized and goods arrive for processing just in time to be used in production. This helps to reduce waste, improve efficiency, and lower costs.

Question 5

The use of small lot sizes in JIT is in conflict with the EOQ approach.

Accepted Answer

The answer of The use of small lot sizes in...

Question 6

Setup time and cost can often be reduced by the use of group technology.

Accepted Answer

Group technology involves grouping similar parts or processes together to reduce setup time and cost. By identifying commonalities and standardizing processes, setup time can be reduced as workers become more efficient in their tasks and don't need to switch equipment or tools as frequently. Additionally, cost can be reduced as economies of scale are achieved through standardization and bulk ordering of materials or supplies.

Question 7

In a JIT environment,anything superfluous is viewed as waste.

Accepted Answer

In a JIT (Just-in-Time) environment, the goal is to minimize waste, including any unnecessary or superfluous activities, processes, or inventory. This is because any excess or wasteful actions can lead to inefficiency, increased costs, and decreased productivity. Therefore, anything viewed as unnecessary or non-value adding is considered waste and should be eliminated or improved upon.

Question 8

In a broad sense,JIT is identical to lean production.

Accepted Answer

JIT (Just-in-Time) is a concept that is a part of lean production, which aims to eliminate waste and improve efficiency in production processes. Therefore, in a broad sense, JIT is identical to lean production.

Question 9

Waiting time is not considered a waste in the JIT philosophy.

Accepted Answer

In the JIT (Just-In-Time) philosophy, waiting time is considered a waste because it does not add value to the product and is seen as an inefficiency that should be minimized or eliminated.

Question 10

A JIT system uses long production runs as this reduces the setup time required.

Accepted Answer

JIT (Just-In-Time) system aims at producing goods in small batches in response to customer orders. This system emphasizes reducing inventory and minimizing waste. Long production runs are not preferred in a JIT system as it can lead to excessive inventory and waste, which goes against the principles of JIT. The focus is on reducing setup time and producing only what is needed when it is needed.

Question 11

Reductions in setup time are necessary to make a JIT system feasible.

Accepted Answer

JIT systems rely on quick and efficient production processes with minimal waste. Therefore, reducing setup times is crucial in order to minimize downtime and maximize productivity.

Question 12

Continuous improvement and flexible systems are requirements for successful JIT and lean systems.

Accepted Answer

Continuous improvement and flexibility are necessary for JIT and lean systems to adapt to changing customer demands and improve efficiency over time. Without the ability to continuously improve and make adjustments, these systems are at risk of becoming stagnant and outdated. Therefore, the statement is true.

Question 13

"Group technology" can be used to reduce setup cost and time in a JIT conversion.

Accepted Answer

Group technology involves classifying similar products together and then designing standardized processes and setups for each group. This can help reduce setup costs and time by allowing for quicker and more efficient changeovers from one product group to another in a JIT conversion.

Question 14

JIT was developed at the Ford Motor Company by Henry Ford.

Accepted Answer

JIT was actually developed by the Toyota Motor Company in Japan.

Question 15

The four building blocks of JIT are: product design,process design,personnel/organizational elements,and planning and control.

Accepted Answer

The four building blocks of JIT are indeed product design, process design, personnel/organizational elements, and planning and control.

Question 16

The small lot-sizing policy works well in a situation where both holding costs and setup costs are high.

Accepted Answer

The small lot-sizing policy is more effective when setup costs are low, allowing for frequent production runs without incurring high costs, whereas high holding costs discourage maintaining large inventories, making small lot sizes preferable. High setup costs would typically discourage small lot sizes due to the increased cost of frequent setups.

Question 17

Manufacturing cells are commonly used in JIT systems

Accepted Answer

Manufacturing cells are commonly used in JIT (Just-in-Time) systems, as they allow for efficient and flexible production with minimal waste or inventory.

Question 18

Flexible systems undermine the goals of JIT and lean systems to have a balanced,rapid flow of products.

Accepted Answer

Flexible systems actually complement JIT (Just-In-Time) and lean systems by allowing for a more adaptable production process, which can respond quickly to changes in demand, thereby supporting the goal of having a balanced and rapid flow of products.

Question 19

A benefit of JIT is the flexibility to handle a mix of products within a short time frame.

Accepted Answer

JIT allows for quick and efficient switching between different products, enabling a company to handle a variety of products within a short time frame.

Question 20

In the JIT philosophy,the smaller the lot size,the better.

Accepted Answer

JIT (Just-in-Time) philosophy emphasizes on producing goods only when they are needed in the production process, which requires smaller lot sizes, efficient supply chain management and continuous improvement to minimize waste, reduce inventory costs and improve quality.

Quiz 21: Just-In-Time and Lean Production