Intro to Millwright Practice Exam

What term describes the tiny particles that perform abrasive work in most abrasives?

1. Grit

2. Dust

3. Fibre

4. Shards

The correct answer is: Grit

The term that describes the tiny particles performing abrasive work in most abrasives is "grit." Grit refers specifically to the texture or size of abrasive particles used in various materials, such as sandpaper, grinding wheels, or shot blasting media. These particles are measured by their size; a higher grit number indicates smaller, finer particles, while a lower number corresponds to coarser particles. This is crucial because the size and composition of the grit directly influence the abrasiveness and the finish of the surface being worked on. Understanding this terminology is essential for selecting the appropriate abrasive material for specific tasks in millwrighting and other trades, ensuring effective and efficient results.