Mechanical Engineering Quiz Test!

When using a grinder, wearing goggles is necessary to protect the eyes from any potential hazards such as sparks, debris, or fragments that may be generated during the grinding process. Gloves are not specifically designed for eye protection and may not effectively shield the eyes. Holding the work firmly and using a tool rest are important for stability and control, but they do not directly address eye protection. Therefore, wearing goggles is the most appropriate safety measure for protecting the eyes when using a grinder.

The correct answer is "higher levels of knowledge and skills". Technical workers in construction and manufacturing industries are paid more than skilled or semi-skilled workers because they possess advanced knowledge and skills that are necessary for their job roles. These workers typically have specialized training and expertise in their respective fields, allowing them to perform complex tasks and handle advanced machinery. Their higher levels of knowledge and skills make them more valuable to employers, leading to higher pay.

Filing is the correct answer because it is not typically done using computer numerically controlled (CNC) machines. Filing is a manual process that involves using a hand tool to remove material from a workpiece, whereas CNC machines are automated and controlled by computer programs to perform precise operations such as milling and plasma cutting.

Back injuries are the most common injury-causing absence from work because they can occur due to various reasons such as lifting heavy objects, poor posture, repetitive movements, or accidents. Back injuries can be debilitating and cause severe pain, making it difficult for individuals to perform their job duties. Additionally, back injuries often require medical treatment and rehabilitation, leading to extended periods of absence from work. Therefore, back injuries are a significant cause of work-related absences.

Proportion represents the size relationship of the parts of a whole. It is used to compare the relative sizes of different components within a whole. Proportion is often expressed as a ratio or a fraction, indicating the comparative sizes of the parts in relation to the whole. This concept is widely used in various fields such as art, design, mathematics, and statistics to create balanced and visually pleasing compositions and to analyze data accurately.

Computer-aided manufacturing (CAM) is a process that utilizes computer software to oversee and manage the production of high-quality parts. By using CAM, manufacturers can ensure precision and accuracy in the manufacturing process, resulting in consistent and reliable products. This technology allows for greater control over various aspects of production, such as tooling, machining, and quality assurance, ultimately leading to improved efficiency and reduced errors. CAM eliminates the need for manual intervention and reduces labor-intensive activities, making the manufacturing process more streamlined and cost-effective.

Ergonomics is the science of fitting the job or work environment to the worker. This means designing and arranging workspaces, tools, and equipment in a way that maximizes efficiency and comfort for the worker. It involves considering factors such as body posture, movement, and physical capabilities to reduce the risk of injuries and improve overall productivity. Ergonomics aims to create a work environment that is well-suited to the needs and abilities of the worker, ultimately enhancing their performance and well-being.

Detailed orthographic drawings are used to show the dimensions of a finished product for manufacturing. These drawings provide accurate and precise measurements of the product, including its length, width, and height. This information is crucial for manufacturers as it helps them understand the exact size and shape of the product, allowing them to create it accordingly. Additionally, orthographic drawings also include annotations and notes that provide further details about the product, such as tolerances and material specifications, which are essential for the manufacturing process.

The product developer should consider anthropometrics during the design process. Anthropometrics refers to the study of human body measurements and proportions. Since the products are intended to be used by persons of various weights and heights, it is important to design them in a way that accommodates the different body sizes and shapes. By considering anthropometrics, the developer can ensure that the products are comfortable, safe, and suitable for a diverse range of users.

Employers must identify possible workplace hazards when the need arises in order to ensure the safety and well-being of their employees. This means that they should be proactive in identifying and addressing any potential hazards or risks that may arise in the workplace, rather than waiting for an incident or accident to occur. By identifying hazards as they arise, employers can take appropriate measures to mitigate risks and create a safer work environment for their employees.