GRINDING MCQ PART -2 FOR SEM 2

1) Grinding with a balanced grinding wheel will make it possible to achieve the required

Dimensional accuracy with the surface finish

Positional tolerance surface finish only

Positional tolerance

Pattern of lay

2) Snagging is a process used to remove the metal by

filling

hacksawing

chiseling

grinding

3) Which one of the following materials are used for making a grinding wheel?

Granite

Sand

Silicon carbide 

Calcium carbonate

4) What is the trouble when grinding wheel fails to cut in a grinding machine?

Grinding wheel’s grade is too soft.

Grinding wheel is not securely mounted on the spindle.

Grinding wheel is glazed.

Too much feed is given.

5) The depth of infeed per pass in dressing a grinding wheel should be not more than

0.25 mm

0.025 mm

0.0025 mm 

0.00025 mm

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

E

J

P

Y

7) It is required to finish grind a 050 mm mild steel shaft on a cylindrical grinding machine. What will be the surface speed if r.p.m?. of the job is 191?

20 metres/mm.

25 metres/mm.

30 metres/mm.

35 metres/mm.

8) Which among the following is the artificial abrasive?

Corundum

Diamond

Emery

All of the above

9) By which unit the roughness value is expressed for grinding.

µ m

µ in

µ lbs

µ ft

10) Grain number of the grinding wheel is ___ to grain size

Directly proportional

Inversely proportional

Does not depend

None of the above