ADMF 102 Machine Operations 2 Quiz
Answers
What figure in the figure shown is a chamfer? - ANS-D
What size tap drill should be used to prepare the hole shown in the part drawing for the
7/16 threads. - ANS-U (0.3680)
During the hand tapping operation, the tap should be rotated counterclockwise for ½
turn following each 1 turn clockwise to _____. - ANS-Break off chips to avoid jamming
the tap
Which of the following is not true about chamfer holes? - ANS-The counterbore tool is
used to chamfer holes
A counterbore _____. - ANS-Has a pilot
A tap _____. - ANS-Looks like a screw
The ____ portion of the bit used to guide the counterbore into a hole and ensure
alignment. - ANS-Pilot
A _____ enlarges the upper part of a hole and has a square bottom. - ANS-Counterbore
Select a counterbore diameter that is approximately _____ larger than the diameter of
the head of the socket head cap screw that will be used. - ANS-1/64
The maximum strength is reached when thread engagement reaches _____. -
ANS-60%
Answers
What figure in the figure shown is a chamfer? - ANS-D
What size tap drill should be used to prepare the hole shown in the part drawing for the
7/16 threads. - ANS-U (0.3680)
During the hand tapping operation, the tap should be rotated counterclockwise for ½
turn following each 1 turn clockwise to _____. - ANS-Break off chips to avoid jamming
the tap
Which of the following is not true about chamfer holes? - ANS-The counterbore tool is
used to chamfer holes
A counterbore _____. - ANS-Has a pilot
A tap _____. - ANS-Looks like a screw
The ____ portion of the bit used to guide the counterbore into a hole and ensure
alignment. - ANS-Pilot
A _____ enlarges the upper part of a hole and has a square bottom. - ANS-Counterbore
Select a counterbore diameter that is approximately _____ larger than the diameter of
the head of the socket head cap screw that will be used. - ANS-1/64
The maximum strength is reached when thread engagement reaches _____. -
ANS-60%