TPC 315 Machine Shop Practice Flashcards
Iron parts are usually made from
Barstock
Castings
Forgings
Sheet
Castings
What do the last two digits of the SAE steel code indicate?
Brinell hardness
Percentage of carbon
Percentage of alloy
Weight per foot
Percentage of carbon
The ability of a steel to resist cutting and scratching is called
Ductility
Elasticity
Hardness
Strength
Hardness
The process that eliminates brittleness in a steel is
Annealing
Case hardening
Cold working
Tempering
Tempering
To remove cast iron chips safely from a machine, you should use (a)
Brush
Compressed air
hook
Scraper
Brush
What tool should you use to lay out and measure distances?
Dividers
Hemaphrodite caliper
Outside caliper
Template
Dividers
To prevent cast iron surface plates from rusting, coat them lightly with
Grease
Oil
Shellac
Wax
Oil 
To raise a surface gauge for measuring above its height, support it on (a)
Box parallels
Pair of V-blocks
Right-angle plate
Surface plate
Box parallels
The distance between the centers of two adjacent holes on a bolt circle is the
Chord or pitch chord
Diagonal
Diametral pitch
Pitch diameter
Chord or pitch chord
You should carry pointed tools in a tote box or in a
Cloth bag
Deep tool box
Drawer-type chest
Pouch fastened to your belt
Pouch fastened to your belt 
The part of a lathe that holds the dead center is called the
Tail center
Tail grip
Tailpiece
Tailstock
Tailstock
To remove a live center from a lathe, you should tap it with a
Chuck key
Knockout bar
Piece of barstock
Rawhide hammer
Knockout bar
What should you use to remove a chuck that screws on a lathe spindle?
Block of wood
Length of chain
Piece of angle iron
Spanner wrench
Block of wood
To mount a workpiece on a machine table, you should hold it in a
Chuck
Collet
Hold-down
Vise
Vise
A view showing a portion of a part cut away is a
Plan view
Proportion
Section
Sketch
Section
The two dimensions of a cylinder are its and its
Diameter …….. length
Diameter ……… radius
Inside ………….. outside diameter
Width…………….. diameter
Diameter………. Length
A name for the degree of accuracy needed for a part to function is
Allowance
Fit
Precision
Tolerance
Precision
The index line of a micrometer is divided into 40 parts per inch. Each turn of the micrometer thimble moves the spindle
0.004 in.
0.010 in.
0.025 in .
0.040 in.
0.025 in.
What does a toolmaker use to check the accuracy of gauges?
Micrometer caliper
Vernier scale
Gauge blocks
Steel rule
Gauge blocks
When you grind the end of a high-speed steel tool, the steel
Creates a foul smell
Gives off dark red sparks
Smokes excessively
Turns black
Gives off dark red sparks
The surface of the tool shank that supports the cutting tip is the
Base
Face
Land
Rake
Base
The proper surface of a wheel to use for grinding high-speed steel tools is the
Edge
Face
Flats
Side
Face
What does A represent in a grinding wheel code marked A 60 N 10 V W?
Coarse or fine
Grade or hardness
Type of abrasive
Type of bond
Type of abrasive
The process of cleaning up an uneven edge formed by grinding is called
Buffing
Glazing
Honing
Scraping
Honing
The metal column that separates the flutes of a drill is called the
Helix
Land
Shank
Web
Web
The points of most general purpose twist drills have an included angle of degrees
29
59
88
118
118
A flaring cup grinding wheel produces a relief that is
Concave
Convex
Flat
Tapered
Flat
Machine countersinks have an included angle of to degrees
15 ……. 20.
30 …….. 41
45 ……… 62
60 ………. 82.
60……… 82
To remove burrs in a machine spindle, you should use a(n) reamer
Machine
Tapered pipe reamer
Tapered
Expansion
Tapered
For boring operations on a lathe, you should hold the workpiece in a
Chuck
Collet
Hold-down
Vice
Chuck
