Question

two techs are threading a hole in a steel part. technician a says to consult a tap drill chart to determine the proper sized drill bit. technician b says that the tap needs to be lubricated when cutting threads. who is correct? select one: a. technician a b. technician b c. both a and b d. neither a nor b

Explanation:

Step1: Importance of tap - drill chart

To thread a hole, a tap - drill chart is consulted to find the proper sized drill bit for the tap to ensure correct thread formation.

Step2: Importance of lubrication

When cutting threads with a tap, lubrication reduces friction, heat, and wear on the tap, and improves the quality of the threads. So both technicians are correct.

Answer:

C. Both A and B