Types of Grinding Operation

Q. If the longitudinal feed in centreless grinding is expressed by $V_t=\pi DNsin\alpha ,D$ stands for

1. Diameter of blank
2. Diameter of finished workpiece
3. Diameter of control wheel
4. Diameter of grinding wheel

Q. Abrasives are not used in

1. Buffering process
2. Burnishing process
3. Polishing process
4. Super finishing process

Q. A grinding ratio of 200 implies that the

1. grinding wheel wears 200 times the volume of the material removed
2. grinding wheel wears 0.005 times the volume of the material removed
3. aspect ratio of abrasive particles used in the grinding wheel is 200
4. ratio of volume of abrasive particle to that of grinding wheel is 200

Q. Cutting speed in grinding is set to a high vlaue to

1. Reduce the cutting time
2. Increase the bond strength
3. Improve cooling of job and wheel
4. Reduce the wheel wear