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Multiple Choice Quiz
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1
Which is not characteristic of twist drills:
A)they can be resharpened easily
B)they are flat cutting tools
C)they are commonly made of HSS
D)they are somewhat flexible
2
Which of the following drills is a good choice to use when creating a 1/4-20 internal thread?
A)1/4
B)Letter E
C)3/16
D)#7
3
Which is not an equation for determining RPM:
A)surface speed x 12 / pi x diameter (in.)
B)surface speed x 4 / diameter of object (in.)
C)surface speed x 300 / diameter of object (mm)
D)surface speed x pi / diameter of object (in.)
4
Using the short formula, what is the proper RPM for a 1/2 inch drill bit using a surface speed of 140 f/M?
A)4060
B)2000
C)1120
D)500
5
When using a grinding wheel, which of the following is considered a safe practice?
A)making sure eye guards and scatter shields are in place
B)wearing safety glasses
C)checking that the tool post is close enough to the wheel
D)all of these are correct





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