Introduction to Abrasive Machining and Finishing Processes : Week-1 Solution

 

Introduction to Abrasive Machining and Finishing Processes : Week-1 NPTEL SOLUTION

HERE WE TO SHOW SOLUTION OF ALL NPTEL QUEISTION,WEEK WISE UPDATE ON THIS WEBSITE SO SEE THE FULL SOLUTION

What is the major criteria for employing finishing process?

 To get more material removal

 To achieve minimum surface roughens

 To improve better aesthetic appearance

 To achieve minimum sufface roughness and aestheric appearance

1 point

What is the formula used for measuring of abrasive particle size?

1.52mmmesh number${\displaystyle \frac{1.52\text{mm}}{\text{mesh number}}}$

15.2mmmesh number${\displaystyle \frac{15.2\text{mm}}{\text{mesh number}}}$

152mmmesh number${\displaystyle \frac{152\text{mm}}{\text{mesh number}}}$

0.152mmmesh number${\displaystyle \frac{0.152\text{mm}}{\text{mesh number}}}$

1 point

Ball milling process is used to _____________

 Remove residual stresses

 Increase tensile strength

 Reduce size of powder particles

 Enhances the hardness of components

1 point

The specification of grinding wheel is given as C 23 M 2 V. The abrasive particles used in this wheel is

 Alumina

 Cesium oxide

 Silicon carbide

 Boron carbide

1 point

Which type of bond is used in grinding wheel for minimizing the heat generation?

 Rubber bond

 Silicate bond

 Vitrified bond

 Metal bond

1 point

Regulating wheel is made of ______ bonded abrasives.

 Rubber

 Silicate

 Vitrified

 Metal

1 point

Friability of grinding wheel is associated to _______

 Hardness

 Fracture

 Size

 None of the above

1 point

In machining titanium workpieces, which of the following cutting fluid additive is not used?

 Sulfur

 Chlorine

 Both sulfur and chlorine

 Argon

1 point

The function of the emulsifier is to ____________

 Increase the surface tension

 Decrease the viscosity of fluid

 Reduce the surface tension

 Increase the thermal stability of the fluid

1 point

In anti-rusting additives in cutting fluids, weight ratio of aromatic acid to aliphatic acid is ____?

 8:1

 10:1

 2:1

 1:1