Precision Machining NIMS Review Exam
Questions 100% Correct Solutions
Dial bore gages are used to measure - Answers -✔✔ holes
Using the Machinist Hand Book, determine the hole size for a Class FN2 force fit if the
diameter is 1.625. - Answers -✔✔ 1.6226 to 1.6242
The stock allowance for reaming is - Answers -✔✔ 1/64 inch
Which type of head on a combination set is used to find the center of a rod? - Answers -
✔✔ center
Which of the following combinations of layout instrumentsprovides the most accurate
layout? - Answers -✔✔ digital height gage with a scribe attachment
In order to start a tap and maintain perpendicularity, the best practice is to
____________ the hole edge. - Answers -✔✔ countersink
Inspection plans are needed to - Answers -✔✔ 1.) identify measuring tools
2.)coordinate inspection procedures
3.)check dimensions in a repeatable and reliable way
When facing a work piece, one would use which feed? - Answers -✔✔ cross-feed
What is the range of the following sampling: {0.345, 0.382, 0.353, 0.380, 0.377}? -
Answers -✔✔ 0.037
Tough material causes accelerated tool wear. A michinist should: - Answers -✔✔
reduce the spindle speed
Which formula is used to figuring the feed rate when facing on a lathe? - Answers -✔✔
[(cutting speed / 12) / rpm] / 2
Identify the statement that best describes the relationship between type of material,
cutting speed, and rpm for milling operations with high-speed steel tooling. - Answers -
✔✔ hard materials require lower cutting speeds and lower rpm
The feed rate for reaming a hole on a drill press should be ____________ that of
drilling. - Answers -✔✔ 2 times
Identify the process of enlarging a hole to place a bolt or nut below its surface. -
Answers -✔✔ counterbore
, what is the safest item to use when removing chips? - Answers -✔✔ brush
Which of the following combinations of gage blocks (from an 81-block set) can be used
to gage a length of 0.9528? - Answers -✔✔ 0.1008, 0.102, 0.750
To indicate an angled surface and make that surface parallel to a surface plate, the
machinist would use: - Answers -✔✔ a sine plate and gage blocks
Applying the formula below, find the taper per foot for a workpiece with a large diameter
of 3.5 inches and a small diameter of 2.75 inches with a taper length of 5.5 inches.
TPF= [(D-d)/(Lngth of taper)] × 12 - Answers -✔✔ 0.0896 inch taper per foot
The most important factor in selecting measuring tools for inspection is: - Answers -✔✔
the critical and important dimensions to inspect
The best item to use to remove pinning from a file is: - Answers -✔✔ file card
The machining process used to seat a flat head screw is: - Answers -✔✔ countersink
Referring to the Machinist Hand Book, what is the minimum pitch diameter for an
external thread 7/16-14 UNC-2A? - Answers -✔✔ 385
For layout of an angle other than 45 or 90, the ____________head of a combination set
would be applied.. - Answers -✔✔ protractor
Metal flaking during a knurling operation means that: - Answers -✔✔ proper knurling
action is taking place and the flakes must be cleaned off
Deep scratches found in the work piece after filing is the result of: - Answers -✔✔
pinning
Which type of material bit is used when figuring the RPM with the formula (cutting speed
X 8) / diameter? - Answers -✔✔ carbide
The proper tool to remove a broken tap is: - Answers -✔✔ tap extractor
The resolution of a mictometer with a vernier scale is: - Answers -✔✔ 0.0001 inches
Identify the machining process that has the ability to enlarge an existing hole. - Answers
-✔✔ boring bar
What does the acronym FN represent? - Answers -✔✔ force fit
Questions 100% Correct Solutions
Dial bore gages are used to measure - Answers -✔✔ holes
Using the Machinist Hand Book, determine the hole size for a Class FN2 force fit if the
diameter is 1.625. - Answers -✔✔ 1.6226 to 1.6242
The stock allowance for reaming is - Answers -✔✔ 1/64 inch
Which type of head on a combination set is used to find the center of a rod? - Answers -
✔✔ center
Which of the following combinations of layout instrumentsprovides the most accurate
layout? - Answers -✔✔ digital height gage with a scribe attachment
In order to start a tap and maintain perpendicularity, the best practice is to
____________ the hole edge. - Answers -✔✔ countersink
Inspection plans are needed to - Answers -✔✔ 1.) identify measuring tools
2.)coordinate inspection procedures
3.)check dimensions in a repeatable and reliable way
When facing a work piece, one would use which feed? - Answers -✔✔ cross-feed
What is the range of the following sampling: {0.345, 0.382, 0.353, 0.380, 0.377}? -
Answers -✔✔ 0.037
Tough material causes accelerated tool wear. A michinist should: - Answers -✔✔
reduce the spindle speed
Which formula is used to figuring the feed rate when facing on a lathe? - Answers -✔✔
[(cutting speed / 12) / rpm] / 2
Identify the statement that best describes the relationship between type of material,
cutting speed, and rpm for milling operations with high-speed steel tooling. - Answers -
✔✔ hard materials require lower cutting speeds and lower rpm
The feed rate for reaming a hole on a drill press should be ____________ that of
drilling. - Answers -✔✔ 2 times
Identify the process of enlarging a hole to place a bolt or nut below its surface. -
Answers -✔✔ counterbore
, what is the safest item to use when removing chips? - Answers -✔✔ brush
Which of the following combinations of gage blocks (from an 81-block set) can be used
to gage a length of 0.9528? - Answers -✔✔ 0.1008, 0.102, 0.750
To indicate an angled surface and make that surface parallel to a surface plate, the
machinist would use: - Answers -✔✔ a sine plate and gage blocks
Applying the formula below, find the taper per foot for a workpiece with a large diameter
of 3.5 inches and a small diameter of 2.75 inches with a taper length of 5.5 inches.
TPF= [(D-d)/(Lngth of taper)] × 12 - Answers -✔✔ 0.0896 inch taper per foot
The most important factor in selecting measuring tools for inspection is: - Answers -✔✔
the critical and important dimensions to inspect
The best item to use to remove pinning from a file is: - Answers -✔✔ file card
The machining process used to seat a flat head screw is: - Answers -✔✔ countersink
Referring to the Machinist Hand Book, what is the minimum pitch diameter for an
external thread 7/16-14 UNC-2A? - Answers -✔✔ 385
For layout of an angle other than 45 or 90, the ____________head of a combination set
would be applied.. - Answers -✔✔ protractor
Metal flaking during a knurling operation means that: - Answers -✔✔ proper knurling
action is taking place and the flakes must be cleaned off
Deep scratches found in the work piece after filing is the result of: - Answers -✔✔
pinning
Which type of material bit is used when figuring the RPM with the formula (cutting speed
X 8) / diameter? - Answers -✔✔ carbide
The proper tool to remove a broken tap is: - Answers -✔✔ tap extractor
The resolution of a mictometer with a vernier scale is: - Answers -✔✔ 0.0001 inches
Identify the machining process that has the ability to enlarge an existing hole. - Answers
-✔✔ boring bar
What does the acronym FN represent? - Answers -✔✔ force fit
