1.
When using the tool grinder, an extra form of eye and face protection, such as ________, should be warn at all times in addition to your regular approved eye protection.
Correct Answer
B. Face shield
Explanation
When using the tool grinder, it is important to wear an extra form of eye and face protection in addition to regular approved eye protection. A face shield provides a protective barrier for the entire face, including the eyes, nose, and mouth, offering comprehensive protection against flying debris, sparks, and other potential hazards. Goggles alone may not provide sufficient coverage for the face, making a face shield the ideal choice for ensuring maximum safety during tool grinding operations.
2.
Always check that the tool rest is not more than ________ inch away from the grinder wheel, and that it is secure and will not move.
Correct Answer
A. 1/8
Explanation
The correct answer is 1/8 inch. It is important to always check that the tool rest is not more than 1/8 inch away from the grinder wheel. This ensures that the tool rest is at a safe and appropriate distance from the wheel, allowing for proper grinding and reducing the risk of accidents. Additionally, it is important to ensure that the tool rest is secure and will not move during use, further ensuring safety and proper grinding.
3.
Be careful not to ________ the wheel.
Correct Answer
B. Crowd or overheat
Explanation
The phrase "be careful not to reinvent the wheel" means that one should avoid wasting time and effort trying to create something that already exists or has already been done. In this context, "crowd or overheat" can be seen as a metaphorical representation of reinventing the wheel. It suggests that one should not overcomplicate or overthink a situation, but rather stick to what is already known or established.
4.
Do not grind anything on the side of wheel, as ________.
Correct Answer
C. The wheel may crack and shatter
Explanation
Grinding on the side of the wheel can cause the wheel to become stressed and weakened, leading to cracks and ultimately shattering. This is because the wheel is designed to cut and grind on its face, not on the sides. Grinding on the side can create excessive heat and pressure, causing the wheel to fail and potentially cause injury. It is important to always use the wheel properly and follow safety guidelines to prevent accidents.
5.
You should grind only ________ on the tool grinder.
Correct Answer
A. Iron and steel
Explanation
The tool grinder should only be used to grind iron and steel. Grinding other materials such as gold and silver, copper and brass, or hard and soft metals may damage the tool grinder or produce suboptimal results.
6.
When grinding small pieces, you should use the ________ of the tool rest to support your material.
Correct Answer
B. Center
Explanation
When grinding small pieces, it is important to use the center of the tool rest to support your material. This is because the center provides a balanced and stable support, ensuring that the small pieces do not tip or wobble during the grinding process. Using the center of the tool rest helps to maintain control and accuracy while grinding, resulting in better outcomes.
7.
When grinding small articles you must secure them to something solid, such as ________.
Correct Answer
C. A pair of vise-grip pliers
Explanation
When grinding small articles, it is important to secure them to something solid to prevent them from moving or slipping during the grinding process. Using a pair of vise-grip pliers provides a secure grip on the small article, ensuring that it remains in place while grinding. This helps to maintain accuracy and safety during the grinding process.
8.
You must never use ________ to hold your metal when you are grinding.
Correct Answer
A. Gloves or rags
Explanation
When grinding metal, it is important not to use gloves or rags to hold the metal. This is because gloves or rags can easily get caught in the grinding wheel, leading to serious injuries. The spinning wheel can grab onto the material and pull the hand in, causing severe cuts or even amputations. It is safer to use tools like vise-grip pliers, a pair of pliers, or a clamp to securely hold the metal while grinding.
9.
Do not stand ________ the grinding wheels when turning on the power.
Correct Answer
A. Infront of
Explanation
It is important not to stand in front of the grinding wheels when turning on the power because doing so can be dangerous. Standing in front of the grinding wheels puts the person at risk of being hit by any debris or sparks that may fly off during operation. Therefore, it is advisable to stand away from the front of the grinding wheels to ensure safety.
10.
When using the tool grinder, ________.
Correct Answer
D. Do not lean to close to your work
Explanation
When using the tool grinder, it is important not to lean too close to your work. This is because the grinder can produce sparks and debris that can cause injury if they come into contact with your body. By maintaining a safe distance from the workpiece, you can minimize the risk of accidents or injuries.