Measurement, Materials, and Safety Cert chapter 2 Q 41-50

Material becoming embedded in the teeth of file refers to ___________, and if not cleaned, this could lead to poor cutting and scratches on the work piece:

• pinning

• packing

• glazing

• none of the above

A manufacturing company is switching the type of coolant currently used in its CNC turning Department. Information about the reactivity of the new coolant can be found on the ____________, and employee should be formally trained about how to protect them-selves when handling this coolant at the regularly scheduled__________________.

• Container label; production meeting

• inventory control sheet; awards luncheon

• PPE; department meeting

• MSDS: safety meeting

Which method listed here is considered safe and acceptable?

• Using a file to pry two fixtures components apart

• Pushing a wrench away from you to loosen a bolt

• Carrying a scribe in your pocket

• Establishing a balance position and pulling a wrench toward you to loosen a bolt

A _____________is a tapered wedge that can be adjusted to reduce the side play, which can develop over time from use, on the sliding components of a machine tool.

• drift

• gib

• way

• shim

A part print specifies a part's thickness at 1.000"  $\pm$  0.003" and a quantity of 300 parts. Which of the following inspection methods is both accurate and the most efficient to inspect this demension during the machining process?

• Use a 0-1" micrometer and a 1-2" micrometer

• Use a 6" dial caliper

• Use a dial indicator mounted on a surface gage, calibrated to 1.000" gage block, with a surface plate.

• use a height gage with a surface plate

Which choice listed here correctly identifies the files shown in the following figure?

• mill, square, flat, half, round

• bimetal, diamond, alternate, wavy

• jeweler,die maker, rough cut, hook

• single cut, double cut, curved tooth, rasp tooth

A 5/16" tap drill is used to create a hole prior to tapping a 3/8-UNC thread. Using the shop reference for students and apprentices or the Machinery's Handbook as a reference, find the percentage of thread that will be achieved.

• 65

• 70

• 77

• 81

A class of fit suitable for steel parts, or for shrink fits on light sections, and is considered the tightest fit permissible on external cast iron features describes.

• FN 2 medium drive fit

• RC 2 sliding fit

• RC 4 close running fit

• FN 3 heavy drive fit

What is the hole tolerance for a 2.250" RC 2 sliding fit?

• 0.000" to 0.0007"

• 0.000" to 0.007"

• 0.0004" to 0.009"

• 0.000" to 0.007"

A part print specifies a slot to be machined on the workpiece at 0.875"  $\pm$  0.003" wide. The depth of the slot is specified at 0.375"  $\pm$  0.003". Which method would be the best choice for machining this slot?

• A

• B

• C

• D