Operations Related to Drilling

Q. The final finishing process for the surface plate made of cast iron which is used as a reference surface is

1. Buffing
2. Grinding
3. Hand scraping
4. Honing

Q. Reaming is primarily used for achieving

1. Higher MRR
2. Improved dimensional tolerance
3. Fine surface finish
4. Improved positional tolerance

Q. Reamer is designed to have even number of flutes to

1. Balance the cutting forces
2. Conform to shop floor standard
3. Enable measurement of the reamer diameter
4. Help in regrinding of reamer

Q. Minimum dimensional and form accuracy can be obtained in the cylinder bores of automobile engines if the bores are finished by

1. Lapping
2. Reaming
3. Internal grinding
4. Honing

Q. Trepanning is performed for

1. finishing a drilled hole
2. producing a large hole without drilling
3. turning a hole for alignment
4. enlarging a drilled hole