Drilling Machine

16 practice questionsWorkshop PracticeStep-by-step solutions

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What angle is usually used for a countersink chamfer?

A.90 degrees

B.45 degrees

C.60 degrees

D.120 degrees

What are the standard length series of twist drills called?

A.Jobber series, stub series, long series, and extra long series

B.Light, medium, heavy, and extra heavy series

C.Type A, Type B, Type C, and Type D series

D.Coarse, fine, super-fine, and ultra-fine series

How can a workpiece be held in place on a drilling machine, per the module?

A.By clamping to the worktable, in a vice, or in a jig for production work

B.Only by hand pressure from the operator

C.Only by magnetic chucking on the base

D.Only between centres in a tailstock

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