UNIT 3 surface grinding,

1. Which of the following is the primary purpose of surface grinding?

• a. To produce round parts with high precision
• b. To sharpen cutting tools
• c. To remove material from a flat surface
• d. To make internal bores of varying diameters.

2. What is the most common type of abrasive material used in surface grinding?

• a. Diamond
• b. Cubic boron nitride (CBN)
• c. Aluminum oxide
• d. Silicon carbide

3. What is the maximum surface finish that can be achieved with surface grinding?

• a. 63 microinches (Ra)
• b. 125 microinches (Ra)
• c. 250 microinches (Ra)
• d. 500 microinches (Ra)

4. Which of the following is a disadvantage of using a horizontal spindle rotary surface grinder?

• a. Requires a larger work area
• b. Cannot grind small or thin parts
• c. Limited to grinding flat surfaces only
• d. Requires a skilled operator to operate safely.

5. What is the purpose of the coolant in surface grinding?

• a. To prevent the workpiece from overheating
• b. To cool the grinding wheel
• c. To remove the swarf from the grinding zone
• d. To improve the surface finish of the workpiece.

6. Which of the following is a common application of surface grinding?

• a. Grinding internal surfaces
• b. Sharpening milling cutters
• c. Grinding spherical surfaces
• d. Grinding flat surfaces with high precision.