Multiple choice general knowledge science & technology

Which among the below operation needs to be performed after drilling, to have the hole with accurate size;

  1. Reaming

  2. Slotting

  3. Facing

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Reaming is a finishing operation performed after drilling to achieve accurate hole size and smooth surface finish. Drilling alone produces holes with tolerances of about IT12-IT13, while reaming can achieve IT7-IT9 precision. Slotting creates grooves, facing produces flat surfaces, and neither refines hole diameter like reaming does.

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