30) Which grinding process specially shaped wheels are used to grind gear teeth, threads, and splined shafts?

31) What type of surface is produced by external cylindrical grinding?

32) Calculate the spindle speed (RPM) if the diameter of the wheel is 300 mm (d) and the surface speed is 25 m / sec [V] ?

33) Find the surface speed of the grinding wheel if the diameter of the grinding wheel is 300 mm (d) and RPM of the spindle is 2000 (N)?

34) Which types of guide wheel in used for sharpening hand saws?