Just-in-Time Manufacturing

Description: This quiz will test your knowledge on Just-in-Time Manufacturing (JIT), a production strategy that aims to minimize waste and improve efficiency by producing goods only as needed.
Number of Questions: 15
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Tags: manufacturing production inventory management lean manufacturing
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What is the primary goal of Just-in-Time Manufacturing (JIT)?

  1. To reduce production costs

  2. To increase production speed

  3. To minimize waste and improve efficiency

  4. To maximize inventory levels


Correct Option: C
Explanation:

JIT aims to eliminate waste in all its forms, including waste of materials, time, and resources, by producing goods only as needed.

Which of the following is a key element of JIT manufacturing?

  1. Large batch production

  2. Long lead times

  3. Pull production system

  4. High levels of inventory


Correct Option: C
Explanation:

JIT uses a pull production system, where production is triggered by customer demand rather than by forecasts or inventory levels.

What is the concept of "kanban" in JIT manufacturing?

  1. A visual signal used to authorize production

  2. A method for reducing setup times

  3. A technique for improving quality control

  4. A system for forecasting customer demand


Correct Option: A
Explanation:

Kanban is a visual signal, typically a card or tag, that is used to authorize the production of a specific quantity of a product.

What is the role of suppliers in JIT manufacturing?

  1. To provide raw materials and components on an as-needed basis

  2. To maintain large inventories of finished goods

  3. To offer discounts for bulk purchases

  4. To negotiate long-term contracts


Correct Option: A
Explanation:

JIT suppliers are expected to deliver raw materials and components exactly when they are needed for production, minimizing the need for inventory.

How does JIT manufacturing impact lead times?

  1. It increases lead times due to smaller batch sizes

  2. It has no significant impact on lead times

  3. It reduces lead times by eliminating waste and inefficiencies

  4. It increases lead times due to longer setup times


Correct Option: C
Explanation:

JIT manufacturing aims to reduce lead times by eliminating waste, reducing setup times, and improving production flow.

Which of the following is NOT a benefit of JIT manufacturing?

  1. Reduced inventory levels

  2. Improved product quality

  3. Increased production costs

  4. Enhanced customer satisfaction


Correct Option: C
Explanation:

JIT manufacturing aims to reduce production costs by eliminating waste and inefficiencies, not increase them.

What is the term used for the continuous improvement process in JIT manufacturing?

  1. Kaizen

  2. Kanban

  3. Heijunka

  4. Andon


Correct Option: A
Explanation:

Kaizen is the Japanese term for continuous improvement, which is a core principle of JIT manufacturing.

What is the purpose of "heijunka" in JIT manufacturing?

  1. To level out production schedules

  2. To reduce setup times

  3. To improve quality control

  4. To authorize production


Correct Option: A
Explanation:

Heijunka is a technique used in JIT manufacturing to level out production schedules and reduce fluctuations in demand.

Which of the following is NOT a common challenge in implementing JIT manufacturing?

  1. Resistance to change from employees

  2. Difficulty in finding reliable suppliers

  3. High initial investment costs

  4. Increased inventory levels


Correct Option: D
Explanation:

JIT manufacturing aims to reduce inventory levels, not increase them.

How does JIT manufacturing impact the relationship between a company and its suppliers?

  1. It fosters closer collaboration and communication

  2. It leads to adversarial relationships

  3. It has no significant impact on the relationship

  4. It reduces the need for suppliers


Correct Option: A
Explanation:

JIT manufacturing requires close collaboration and communication between a company and its suppliers to ensure timely delivery of materials and components.

What is the primary focus of "andon" in JIT manufacturing?

  1. To identify and resolve production problems

  2. To authorize production

  3. To level out production schedules

  4. To reduce setup times


Correct Option: A
Explanation:

Andon is a visual signaling system used in JIT manufacturing to identify and resolve production problems quickly.

Which of the following is NOT a common metric used to measure the performance of JIT manufacturing systems?

  1. Lead time

  2. Inventory turnover ratio

  3. Overall equipment effectiveness (OEE)

  4. Work-in-progress (WIP)


Correct Option: D
Explanation:

Work-in-progress (WIP) is not a common metric used to measure the performance of JIT manufacturing systems, as JIT aims to minimize WIP.

How does JIT manufacturing impact the role of employees?

  1. It requires employees to be more flexible and adaptable

  2. It reduces the need for skilled workers

  3. It eliminates the need for teamwork

  4. It increases the workload for employees


Correct Option: A
Explanation:

JIT manufacturing requires employees to be more flexible and adaptable to handle changes in production schedules and to work effectively in teams.

Which of the following is NOT a common application of JIT manufacturing?

  1. Automotive industry

  2. Electronics industry

  3. Food and beverage industry

  4. Construction industry


Correct Option: D
Explanation:

JIT manufacturing is not commonly applied in the construction industry due to the unique challenges and constraints of construction projects.

What is the term used for the process of reducing setup times in JIT manufacturing?

  1. Single-minute exchange of die (SMED)

  2. Kaizen

  3. Heijunka

  4. Andon


Correct Option: A
Explanation:

Single-minute exchange of die (SMED) is a technique used in JIT manufacturing to reduce setup times and improve production efficiency.

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