USCG USCG General Eng
Set 16 • Question #218 of 498
Launch Interactive Practice Room When drilling holes larger than 1/2 inch, a smaller pilot hole should be drilled first to __________.
A
ensure the maximum cut by the large drill
B
provide a path for the dead center of the drill
✓ Correct Answer
C
allow the use of a drill with a lesser lip clearance angle
D
increase the cutting speed of the drill bit
USCG NMC Regulatory Explanation
In USCG Marine Engineering General Subjects, for engine room systems involving 'When drilling holes larger than 1/2 inch, a smaller pilot hole should be drilled first to', the standard operating requirement is: 'provide a path for the dead center of the drill'.
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