Pilot hole drilling means

Hole drilled by a pilot

A small hole drilled into a material to guide a larger drill

Drilling done by a machine

Drilling continuously a number of holes

Answer is:

A small hole drilled into a material to guide a larger drill

Explanation:

Image Not Yet Uploaded! Will be updated soon

4) Drill drift is used for

Drawing a drill location

Fixing a chuck on the machine spindle

Removing a broken drill from the work

Removing the drill from the machine spindle

Answer is:

Removing the drill from the machine spindle

Explanation:

6) Lock nut in the micrometer is provided to

control the movement of the spindle

lock the reading after setting it over the work piece

Measure the work piece accurately

lock the micrometer when it is not in use

Answer is:

lock the reading after setting it over the work piece

Explanation:

The lock nut is simply a quarter turn nut that locks the spindle from turning. The sleeve contains the scale which is used to determine the measurement and the internal threads which allow the spindle to move.

7) Taper ring gauge is used to measure

Answer is:

External taper

Explanation:

Pilot hole drilling means

A small hole drilled into a material to guide a larger drill

For More ISRO Technician-B Turner Question Paper - 2019 (Set-1) with Answer Key

Related ISRO Technician-B Turner Question Paper - 2019 (Set-1) with Answer Key

4) Drill drift is used for

Removing the drill from the machine spindle

5) 1 mm is equal to

1000 microns

6) Lock nut in the micrometer is provided to

lock the reading after setting it over the work piece

7) Taper ring gauge is used to measure

External taper

For More ISRO Technician-B Turner Question Paper - 2019 (Set-1) with Answer Key