Question

to prevent the bit from seizing
select one:
a. run at a slow rpm
b. run at a high rpm
c. reduce pressure to the pilot feed levelers just before bit breaks through back side
d. apply cutting lubricant

Explanation:

Running at a slow RPM can help prevent the bit from seizing as it reduces the frictional heat and stress on the bit. High RPM can generate more heat and increase the risk of seizing. Reducing pressure just before bit break - through is more related to bit integrity during that specific operation rather than seizing prevention. Applying cutting lubricant is mainly for cooling and chip removal in some cutting operations but is not the most direct way to prevent bit seizing compared to running at a slow RPM.

Answer:

a. Run at a slow RPM