(4) Higher wheel speeds grinding. reduce the incidence of heat damage to the workpiece surface in (A) will (B) will not (5) Lower wheel speeds grinding. reduce the incidence of heat damage to the workpiece surface in (A) will (B) will not (6) Which one of the following is the best description of the grinding ratio? (A) The rate at which the grinding wheel wears per unit time. (B) The ratio of volume of grinding wheel worn relative to the volume of the work material removed. (C) The ratio of volume of work material removed relative to the volume of the grinding wheel worm. (D) The ratio of wheel surface speed relative to work surface speed. (7) For grinding a flat surface, which process is capable of higher material removal rates? (A) Conventional surface grinding. (B) Creep feed grinding. (8) Which one of the following abrasive processes is commonly used to finish the bores of internal combustion engines? (A) Honing . (B) Lapping. (C) Superfinishing. (9) Which one of the following abrasive processes is commonly used in the production of glass optical lenses? (A) Honing . (B) Lapping. (C) Superfinishing. (10) Grain size in the grinding wheel specification is indicated by a number system in which a higher number indicates a grit size. (A) smaller (B) larger