1. In a grinding wheel specification, grit size is indicated after ?

abrasive type

grade

bond type

wheel structure

Answer: abrasive type

Explanation:


2. Which one of the following is an artificial abrasive ?

emery

diamond

corundum

silicon carbide

Answer: silicon carbide

Explanation:


3. Which of the following is not an abrasive used in a grinding wheel ?

silicate

aluminium oxide

silicon carbide

diamond

Answer: silicate

Explanation:


4. Which of the following is a Precision grinder ?

portable grinder

swing frame grinder

abrasive belt grinder

surface grinder

Answer: surface grinder

Explanation:


5. Grinding fluid are mainly used for ?

wash away chips

prevent loading of wheel

improve the finish

reduce the friction between the wheel face and the job

Answer: reduce the friction between the wheel face and the job

Explanation:


6. Removal of clogs and blunt abrasive grain from the surface of the grinding wheel is know as ?

truing

dressing

glazing

loading

Answer: dressing

Explanation:


7. The grade of a grinding wheel is specified by letter from A to Z. Which are of the following refers to the hardest grade ?

"E"

"Y"

"P"

"J"

Answer: "Y"

Explanation:


8. Dressing and truing of a grinding wheel are ?

only for form grinding wheel

done only for coarse grinding wheels

done with the same equipment

exactly the same operation

Answer: done with the same equipment

Explanation:


9. The effect of using a glazed or loaded wheel ?

more heat generation

poor surface finish

excessive cutting pressure between the wheel face and the work surface

all of the above

Answer: all of the above

Explanation:


10. Grinding in steels is done using grinding wheel with abrasive as ?

aluminium oxide

iron oxide

silicon carbide

iron carbide

Answer: aluminium oxide

Explanation: