Which one of the following is not a direct material? A. Plastic used in the covered case for a home PC B. A tire used for a lawn mower C. Steel used in the manufacturing of steel-radial tires D. Lubricant for a ball-bearing joint for a large crane
The Correct Answer and Explanation is:
The correct answer is D. Lubricant for a ball-bearing joint for a large crane.
Explanation:
In manufacturing, direct materials refer to the raw materials that are used in the production of a product and can be directly traced to that product. These materials are an integral part of the finished product and are physically incorporated into it.
Let’s break down the options:
- A. Plastic used in the covered case for a home PC: This is a direct material because the plastic is an essential component of the home PC case, and it is directly incorporated into the final product.
- B. A tire used for a lawn mower: This is also a direct material because the tire is an essential and visible part of the lawn mower, and it can be traced directly to the final product.
- C. Steel used in the manufacturing of steel-radial tires: Steel is a direct material because it is a major component of the steel-radial tires and becomes a part of the final tire product.
- D. Lubricant for a ball-bearing joint for a large crane: The lubricant is not a direct material because it is not a physical part of the finished crane. While the lubricant plays an important role in the functioning of the crane, it does not become part of the final product. It is considered an indirect material since it is used during production but is not traceable to the final product.
In summary, direct materials are those that are used in the production process and form part of the final product. The lubricant, while important, is not part of the crane’s final structure, making it the correct choice for something that is not a direct material.
