Correct option is B
The code "51 A 60 K 5 V 05" on a conventional abrasive wheel represents different characteristics of the wheel. 'V' in this code refers to the bond type used to hold the abrasive grains together. In this case, 'V' stands for a vitrified bond, which is a common bond type used in grinding wheels. Vitrified bonds are made of clay and other ceramic materials, offering a rigid and porous structure that is suitable for a wide range of grinding applications. Each part of the code indicates different features like abrasive type, grit size, grade, structure, bond type, and other specific parameters.
