Question

The grinding stone wheels of a flour mill are regularly taken out and
grinding surfaces are made rough. Why?
(A) It reduces consumption of electricity.
(B) Speed of the grinding wheel increases.
(C) It increases friction.
(D) It makes up a damage, caused due to earlier friction.​

Answer 1

Answer:

option a is correct

......thank ......

Answer 2

Answer:

Because, It makes up a damage, caused due to earlier friction.​

Explanation:

• Grinding, often known as surface grinding, is a machining process that involves removing material with a powered abrasive wheel, stone, belt, paste, sheet, compound, or other tool to achieve fine finish tolerances and surface finishes.

• Grinding is an abrasive machining method that employs the use of a grinding a flour. It makes up a damage, caused due to earlier friction So, grinding stone wheels of a flour mill are regularly taken out and  grinding surfaces are made rough. Knife that is turned by hand -stones for sharpening (grindstones) Angle grinders and die grinders are examples of portable power tools.