Alberta Red Seal Nov/Dec. 2019 Flashcards
What direction should the teeth point when the blade is mounted in a hacksaw?
Teeth point pointing away from you/handle.
The purpose of draw filing is to:
a) Remove Metal Rapidly
b) Produce a smooth and flat surface
c) Finish rough surfaces
d) Remove sharp corners and burrs
b) Produce a smooth and flat surface.
The discrimination of most bevel protractors is:
- 1 Degree
The discrimination of the universal bevel protractor is:
a) 5 Deg.
b) 1 Deg.
c) 5 Inches.
d) 5 Min.
d) 5 minutes
The discrimination of the bevel protractor is:
a) 5 Deg.
b) 1 Deg.
c) 5 Inches.
d) 5 Mins
b) 1 Deg.
What is the taper ratio of a taper having a length of 200mm, a small diameter of 12mm and a large diameter of 16mm?
a) 1:30
b) 1:40
c) 1:45
d) 1:50
d) 1:50
( 16 - 12 = 4 )
( 200 / 4 = 50 )
A threading tool should have:
- No back or side rake so it cuts the correct thread form.
The correct combination of speed and feed when roughing out a workpiece on the lathe is:
a) high speed, low feed
b) high speed, high feed
c) low speed, low feed
d) low speed, high feed
d) low speed, high feed.
The capacity of a horizontal band saw is determined by the:
a) Total length of blade
b) Largest piece of square material that can be cut.
c) Weight capacity of the roller stock table
d) Largest piece of round material that can be cut.
b) Largest piece of square material that can be cut.
The speed of a horizontal band saw is always expressed in:
a) Revolutions per minute ( Rpm )
b) Inches per minute ( Ipm )
c) Inches per revolution ( Ipr )
d) Surface feet per minute ( Sfpm )
d) Surface feet per minute ( Sfpm )
Another name for a vertical band saw is:
a) Internal saw
b) Band filer
c) Cut-off saw
d) Contour saw
d) Contour saw
The speed of a power hack-saw is always expressed in:
a) Surface feet per minute ( Sfpm )
b) Inches per revolution ( Ipr )
c) Strokes per minute ( Spm )
d) Inches per minute ( Ipm )
c) Strokes per minute ( Spm)
A hand hacksaw blade for sawing thin-wall tubing should have a pitch of:
32 Teeth / Inch.
On a pedestal grinder, the gap between the grinding wheel work-rest should not exceed:
a) 1/16” ( 1.6 mm )
b) 1/32” ( 0.8mm )
c) 1/8” ( 3mm )
d) 1/4” ( 6.3mm )
c) 1/8” ( 3mm)
A direct index plate has 24 slots. What is the angular distance between the slots?
a) 5 Deg.
b) 9 Deg.
c) 15 Deg.
d) 30 Deg.
c) 15 Deg.
When simple indexing, one complete turn of the crank rotates the spindle or the workpiece:
a) 5 Deg.
b) 9 Deg.
c) 15 Deg.
d) 30 Deg.
b) 9 Deg.
When cutting an API thread on a lathe, the threading tool is set:
a) perpendicular to the taper
b) perpendicular to the machine axis
c) 29 Deg. to the taper
d) 14.5 Deg. to the machine axis
b) perpendicular to the machine axis
A diamond penetrator for testing hardness is used on the Rockwell:
a) A,B and C scales.
b) A,B and 15N scales.
c) 15N, 15T and C scales.
d) 30N, 45N and B scales.
b) A,B and 15N scales.
The major load applied to the penetrator when using the Rockwell C scale is:
a) 500 kg
b) 150 kg
c) 100 kg
d) 60 kg
b) 150 kg
The minimum thickness of workpieces when using the Rockwell B scale is:
a) 0.016”
b) 0.022”
c) 0.024”
d) 0.030”
c) 0.024”
The end relief ( Clearance ) angle for a general-purpose high-speed steel lathe tool bit should be:
a) 5 Deg. to 10 Deg.
b) 10 Deg. to 15 Deg.
c) 15 Deg. to 20 Deg.
d) 15 Deg. to 30 Deg.
a) 5 Deg. to 10 Deg.
Before mounting a grinding wheel:
a) perform a ring test on the wheel.
b) balance the wheel
c) remove the blotters
d) roll it along the floor to see if it wobbles
a) perform a ring test on the wheel.
A glazed wheel:
a) no longer cuts because the abrasive particles have become dull.
b) no longer cuts because the spaces between the abrasive particles are jammed.
c) is best used for finishing operations
d) looks and tastes just like a donut
a) no longer cuts because the abrasive particles have become dull.
Truing a wheel:
a) restores its cutting qualities
b) damages the abrasive particles
c) tightens the wheel on the shaft
d) restores the shape of the face of the wheel
d) restores the shape of the face of the wheel
Tempering, also called drawing, is the process of:
a) re-heating hardened steel to a temperature below it’s lower critical temperature, followed by a slow rate of cooling
b) re-heating hardened steel to a temperature below it’s lower critical temperature, followed by desired rate of cooling.
c) heating steel above it’s lower critical temperature and quenching in the proper medium
d) heating steel above it’s upper critical temperature, followed by slow cooking in furnace
b) re-heating hardened steel to a temperature below it’s lower critical temperature, followed by desired rate of cooling.
After hardening, tempering should be done:
a) within 24 hours
b) immediately
c) whenever time permits
d) only if one feels it is necessary for the job
b) immediately
When distortion from heat treatment must be kept to a minimum, which type of steel should be used?
a) air hardening
b) oil hardening
c) water hardening
d) low carbon
a) air hardening
Cutting speed refers to:
a) peripheral speed
b) revolutions per minute ( rpm )
c) feed rate
d) inches per revolution
a) peripheral speed
When using a sensitive drill press, what should you do as the drill breaks through the workpiece?
a) apply cutting fluid
b) increase the pressure
c) ease up on the pressure
d) switch off the machine
c) ease up on the pressure
The lip relief ( clearance ) angle on a drill should be:
a) 5 to 7 Degrees
b) 8 to 12 Degrees
c) 3 to 5 Degrees
d) 2 to 3 Degrees
b) 8 to 12 Degrees
The included point angle of a countersunk hole for most flathead screws is:
a) 60 Deg.
b) 79 Deg.
c) 82 Deg.
d) 100 Deg.
c) 82 Deg.
A general purpose drill bit for drilling most metals has an included point angle of:
a) 150 Deg.
b) 130 Deg.
c) 118 Deg.
d) 59 Deg.
c) 118 Deg.
Carbide drills may be operated at a cutting speed how many times faster than high speed drills?
a) two
b) three
c) four
d) five
b) three
High speed steel cutters should not be used to cut steel harder than:
a) 25 RC
b) 35 RC
c) 45 RC
d) 55 RC
b) 35 RC
Slitting saws are less likely to break if:
a) they are run as a lower cutting speed
b) they are run at a higher feedrate
c) the cutting edges are lightly honed
d) they are mounted on an arbor without a key
d) they are mounted on an arbor without a key
When inaccuracies in the pitch of the micrometer thread takes place within one revolution of the thimble, this type of error is called:
a) progressive error
b) drunked error
c) pitch error
d) periodic error
d) periodic error
On a universal dividng head ( 40:1 ), to index for 10 divisions, you would turn the crank:
a) 6 complete turns
b) 5 complete turns
c) 8 complete turns
d) 4 complete turns
d) 4 complete turns
What element is used to control the overall height of an involute spline tooth?
a) Tooth Thickness
b) Stub Pitch
c) Major Diameter
d) Number of Teeth
b) Stub Pitch
What indexing would be required to cut a 12/24, 18 tooth involute spline shaft with a 30 Deg. Pressure Angle? Assume a 40:1 ratio on the dividing head.
a) 2 turns and 16 holes on a 72 hole plate
b) 1 turn and 9 holes on a 26 hole plate
c) 1 turn 9 holes on a 56 hole plate
d) 2 turn and 14 holes on an 82 hole plate
a) 2 turns and 16 holes on a 72 hole plate
The safest way to remove chips from a machine is to use:
a) a piece of cotton waste
b) your apron
c) a brush
d) a handcloth
c) a brush
A hacksaw blade will bind and break when:
becomes dull
If the edge of a cold chisel quickly becomes dull after each sharpening, it needs:
Hardening and Tempering
The gauge used to check internal tapers is called:
Plug Gauge
Checking the pitch of a thread can be done most accurately with the:
Pitch gauge
A reamer is used to produce _______ and _____ holes.
Smooth and Accurate holes.
A hand reamer has a taper on the end for the purpose of:
Starting.
What is the purpose of Dowel Pins?
Retain parts line up stuff ( Alignment )
Give three ( 3 ) reasons for lapping a component.
1) Improve Surface Flatness
2) Accurate Size/Finish
3) Sealing
Laying out lines parallel to an edge can best be done with the:
Hermaphrodite Calipers
The included point angle of a prick punch should be about:
30 - 60 Degrees
List four methods of making angular layout in order of least to most accurate method:
a) Dividers
b) Bevel Protractors
c) Vernier Protractors
d) Sine Bar and Gauge Blocks
Which of the following dimensions shows a bilateral tolerance?
a) .500 +.004/+.002
b) 1.500 +.000/-.003
c) 1.750 +.002/-.000
d) 2.000 +.003/-.001
d) 2.000 +.003/-.001
The most convenient steel rule for setting inside calipers is the:
Hook rule
If you machine a shaft to 1.500 +.000/-.004 and a sleeve to 1.502 +/-.001 then the resulting fit would be:
Clearance fit
Adjustable parallels can be used to ____ and to _____.
Support work and to Make measurements.
Angles and tapers are most accurately measured with a:
Sine Bar + Gauge Blocks
Negative rake cutting:
a) reduces force on the workpiece
b) reduces chatter
c) used mainly on brazed tip tools
d) developed to overcome weakness of carbide material
c) used mainly on brazed tip tools
Positive rake cutting:
a) allows chips to flow freely from the cutting edge
b) allows increased cutting speeds
c) requires high power input
d) protects the nose the weakest part of the tool
a) allows chips to flow freely from the cutting edge
An American Standard toolholder supports the tool at an angle of ____ and this angle on the tool it is called ____.
15 - 20 Degrees / Back rake
When grinding a turning tool the side relief angle must be greater than:
8 Degrees
List four ( 4 ) important properties of cutting tools:
a) Hard
b) Wear resistant
c) Have a high red hardness
d) Withstand shock
List four ( 4 ) possible causes of chatter:
a) Dull Tool
b) Too light a feed
c) Improper tool height
d) Loose tool in the tool post
The term “ Tempering “ means:
a) heating above lower critical temperature and quenching in proper medium
b) re-heating hardened steel to desired temperature below lower critical temperature
c) heating metal to just above its upper critical point, followed by slow cooling in furnace
d) heating the steel to just above it’s upper critical point and cooling in still air
b) re-heating hardened steel to desired temperature below lower critical temperature
The hardening colours for carbon tool steels are:
Cherry red
List three quenching media used in heat treatment:
( Remember “ WOA “ )
a) Water
b) Oil
c) Air
When using the tempering colors, a brown colour would indicate an approximate temperature of:
a) 450 Deg Fahrenheit
b) 490 Deg. Fahrenheit
c) 530 Deg. Fehrenheit
d) 590 Deg. Fehrenheit
b) 490 Deg. Fehrenheit
A sensitive drill press has only ____ feed.
-Hand
The quill or sleeve on a drilling machine:
a) supports the table
b) has a morse taper in one end
c) holds the cutting tool
d) does not revolve
d) does not revolve
Drilling machines with more than one drilling head and a single table are called:
Gang drill
The advantage of a radial drilling machine is that the _____ can be _____ over the ____.
Drilling head / Moved / Workpiece
The highest spindle speed on a sensitive drill press is achieved with the V-belt on the:
a) largest diameter groove of the motor pulley
b) largest diameter groove of the spindle pulley
c) smallest diameter groove of the motor pulley
d) largest diameter groove of motor and spindle pulley
a) largest diameter groove of the motor pulley
Excessive feed rates on a drilling operation would most likely cause:
Breakage of the chisel point
As the twist drill begins to break through the work:
Reduce feed
The point angle on drills that are used for soft materials is:
60 - 90 Degrees
The included angle of most common countersink drills is:
82 Degrees
The feed rate for reaming as compared to drilling is usually:
2 - 3 times the feedrate for drilling
In general, there are two ( 2 ) types of power saws:
Vertical and Horizontal
A minimum of ____ teeth should be kept in contact with the workpiece at all times.
2 - 3 Teeth
The most common types of set on a metal cutting bandsaw blade are the ____ set and the ____ set.
Straight / Raker
Newly-welded band saw blades require:
a) annealing of the welded area
b) hardening of the welded area
c) Tempering of the welded area
d) normalizing of the welded area
a) annealing of the welded area
In order to stop the blade on a vertical bandsaw from running off the upper wheel:
a) adjust the upper saw blade guide
b) adjust the lower saw blade guide
c) adjust the tilt hand wheel
d) adjust the blade tension
c) adjust the tilt hand wheel
Band velocity on band saws is expressed in:
a) Inches/min
b) Surface feet/min
c) RPM
d) Inches/foot
b) Surface feet/min
Setting a lathe tool above the center line of the lathe will reduce the effective:
End Clearance
Left handed threads are cut by reversing the direction of rotation of the:
Lead screw
The thread chasing dial is located on the:
Apron
The side relief for a single point lathe tool for cutting brass should be:
8 - 10 Degrees
A thread cutting tool is set 90 Deg. to the workpiece axis with the help of a:
Center gauge
The best method to cut 45 Deg. or bevels on the lathe is the:
Compound
The split or half-nut when cutting fractional half threads can be engaged:
1 - 3 or 2 - 4
Name two types of taper turning attachments:
a) Plain
b) Telescoping
To align lathe centers for accurate cylindrical turning:
a) mount a test bar between center’s, adjust tailstock with set over screws, and test with a dial indicator
b) adjust set over screws until lines on the tailstock are in alignment
c) bring tailstock up to headstock and adjust set over screws until centers are in alignment
d) use a micrometer to check the diameter of the work over its entire length
a) mount a test bar between centers, adjust tailstock with set over screws, and test with a dail indicator.
When machining between centers and the work is reversed to machine the opposite end, if the two diameters are not concentric it indicates:
a) the tailstock is out of alignment adjusted away from the operator
b) the tailstock is out of alignment adjusted towards the operator
c) the headstock centre does not run true
d) the tool bit is not on centre height
c) the headstock centre does not run true
Which of the following would give the tightest fitting bolt - nut combination?
a) 1A and 1B
b) 3A and 1B
c) 3A and 3B
d) 2A and 3B
e) 2A and 2B
c) 3A and 3B
On which of the following do you normally find two thread angles?
a) Metric thread
b) American Pipe thread
c) Buttress thread
d) API thread
e) Multiple start thread
c) Buttress thread
What milling cutter is required to produce a blind keyway in the center of a shaft?
Endmill
When milling a spiral reamer which method of indexing is used?
a) direct indexing
b) simple indexing
c) differential indexing
d) any method of indexing
b) simple indexing.
In order to revolve the spindle one complete revolution on most dividing or index heads, the index crank must be revolved:
a) 20 times
b) 40 times
c) 60 times
d) 80 times
b) 40 times
The lead of helix is:
a) length of the workpiece
b) distance required to make one complete turn
c) number of teeth per inch
d) number of teeth per revolution
b) distance required to make one complete turn
One complete revolution of the index crank revolves the work through an angle of:
a) 9 degrees
b) 10 degrees
c) 29 degrees
d) 40 degrees
a) 9 degrees
The gears required for differential indexing are mounted between the ____ and the ____.
Spindle / Indexing plate
The best cutter for fluting reamers is a:
a) radius cutter
b) Woodruff cutter
c) double angle cutter
d) concave cutter
c) double angle cutter
The radial face of the tooth of a reamer is located:
a) 1/64 in. behind the centre
b) 1/64 in. before the centre
c) through the centre
d) at angle to the centre
b) 1/64 in. before the centre
The side relief angle for a single point lathe tool for cutting brass should be:
8 - 10 degrees
Three methods for fastening lathe chucks to the spindle nose are:
a) Threaded
b) Cam Lock
c) Tapered Key
The safest way to file in a lathe is left-handed.
True / False
True
If, when turning work held between centres, the job tapers smaller on the headstock end:
a) adjust the tailstock away from you
b) adjust the tailstock towards you
c) take a smaller cut
d) re-grind the cutting tool
b) adjust the tailstock towards you
What is snagging?
a) precision grinding with hand-held grinders
b) grinding cylindrical pieces held between centers
c) grinding down welds and flash from castings
d) sharpening saws
c) grinding down welds and flash from castings
How is the depth of cut set on a surface grinder?
a) by moving the knee up
b) by raising the saddle
c) by lowering the wheelhead
d) by lowering the column
c) by lowering the wheelhead
What must be done to a magnetic chuck from time to time to keep it true?
a) grind it
b) hone it
c) dial it in
d) scrape the ways
b) hone it
What is the most likely cause of chatter marks?
a) an unbalanced wheel
b) a glazed wheel
c) a loaded wheel
d) a wheel that is too small
a) an unbalanced wheel
Surface grinders are typically accurate to within:
a) 0.005 inch
b) 0.001 inch
c) 0.0005 inch
d) 0.0001 inch
d) 0.0001 inch
What parts of a universal cylindrical grinder can be swivelled?
a) lower table, upper table, and foot-stock
b) upper table, headstock, and foot-stock
c) upper table, wheel-head, and foot-stock
d) upper table, wheel-head, and headstock
d) upper table, wheel-head, and head-stock
Where should you mount the diamond dresser when dressing the grinding wheel?
a) lower table
b) upper table
c) work-head
d) wheel-head
b) upper table
How far should a wheel traverse per revolution when rough grinding?
a) 1/2 to 2/3 it’s width
b) 1/8 to 1/3 it’s width
c) 1/3 to 2/3 it’s width
d) 1.8 to 1/2 it’s width
a) 1/2 to 2/3 it’s width
What part of a cylindrical grinder can be swivelled to grind a short, steep taper?
a) work-head
b) foot-stock
c) lower table
d) upper table
a) work-head
What precautions should you take when grinding up to a shoulder?
a) do not change the speed of the grinding wheel
b) do not change the speed of the workpiece
c) do not change the traverse speed
d) do not change the amount of infeed
c) do not change the traverse speed
How far should the wheel feed past the end of the work when parallel grinding?
a) not at all
b) 1/3 the width of the wheel
c) 2/3 the width of the wheel
d) completely
b) 1/3 the width of the wheel
What part of a cylindrical grinder supports the middle of a long, thin work-piece?
a) foot-stock
b) collet
c) center rest
d) back rest
c) center rest
What is the drag angle when dressing a wheel on a cylindrical grinder?
a) 0 degrees
b) 1 to 3 degrees
c) 3 to 5 degrees
d) 10 to 15 degrees
d) 10 to 15 degrees
What combination of materials provides the longest life?
a) hardened steel worm and bronze worm gear
b) bronze worm and hardened steel worm gear
c) hardened steel worm and hardened steel worm gear
d) cast iron worm and cast iron worm gear
a) hardened steel worm and bronze worm gear
How are most Course Pitch worm threads mass-produced?
a) turning
b) short-lead helical milling set-up on a universal milling machine
c) rolling
d) milling
d) milling
To what angle do you set the dividing head when milling a straight bevel gear?
a) face angle
b) addendum angle
c) dedendum angle
d) root ( cutting ) angle
d) root ( cutting ) angle
A fixture must constrain how degrees of freedom?
a) 2
b) 3
c) 6
d) 12
c) 6
What type of locator is often used for castings?
a) sighting plate
b) conical locators
c) C-washers
d) buttons
d) buttons
Because the measurement of the pitch diameter is least affected by an error in the thread angle, the best size wire is one that contacts the thread at the:
a) base
b) root
c) pitch line
d) crest
c) pitch line
When using the compound-rest method of cutting multiple threads, the machinist moves the compound, for each thread, a distance that is:
a) equal to the depth of the tread
b) equal to the pitch of the thread
c) equal to the lead of the thread
d) three-forths the pitch of the thread
b) equal to the pitch of the thread
A disadvantage of feeding a threading tool with the cross-slide is that:
a) the cutting pressure is on the point of the tool
b) the cutting pressure is on both side of the tool
c) the depth cannot be calculated
d) the form of the thread is not accurate
b) the cutting pressure is on both side of the tool
Which of the following is not a method or tool for measuring thread for size?
a) three-wire method
b) thread snap gauge
c) screw thread micrometer
d) screw thread comparator micrometer
b) thread snap gauge
Multiple threads are used to give:
a) strength
b) power
c) speed
d) self-locking ability
c) speed
The minimum depth of an undercut for a unified thread should be equal to:
Root diamter
The arbor key should:
a) be sufficiently long to extend into the bushings
b) be a drive fit in the cutter
c) be the same length as the cutter
d) be fitted to the spindle nose
a) be sufficiently long to extend into the bushings
The cutter should be mounted:
a) so that it holds the job down on the table
b) so that it tends to loosen the arbor nut
c) so that it removes the pressure from the cutter
d) as close to the column as is practical
d) as close to the column as is practical
When using a helical tooth cutter place it on the arbor so that the work pressure tends to force the cutter toward the machine column.
True or False
True
Which of the following operations would be most difficult to perform on a horizontal boring mill?
a) external threading
b) internal threading
c) external taper turning
d) internal taper boring
a) external threading
The size of a vertical boring mill is determined by the:
a) distance from the table to the turret head
b) size from the rail to the table
c) size from the vertical head to the table
d) size of the table
d) size of the table
The pedestal grinding wheel vibrates excessively, it is an indication that the wheel is:
a) turning too slowly
b) out of balance
c) turning too fast
d) loaded
b) out of balance
To ensure the safe operation of a grinding machine:
a) the wheel should be sharpened or dressed as often as is needed
b) a large amount of coolant should be used
c) the wheel should be operated when dry
d) a resinoid-bonded wheel should be used
a) the wheel should be sharpened or dressed as often as is needed
Which cylindrical grinding machine is best-suited for mass production?
Centerless Grinding
When grinding wheel leaves chatter marks on the work, the only possible reason is that the wheel is out of round.
True or False
False
Which of the following terms does not apply to internal grinding?
a) blind hole grinding
b) through-feed grinding
c) form grinding
d) taper grinding
b) through-feed grinding
Unbalanced wheels cause:
a) chatter
b) very little vibration
c) enough damage to warrant they’re being discarded
d) clogging
a) chatter
A metric taper ratio is:
a) the difference between a taper’s major or minor diameters
b) the length of a taper divided by it’s major diameter
c) expressed in degrees, minutes and seconds
d) the length of the taper for every 1mm increase in diameter
d) the length of the taper for every 1mm increase in diameter
The end relief ( clearance ) angle for a general-purpose high-speed steel lathe tool bit should be:
a) 5 Deg. to 10 Deg.
b) 10 Deg. to 15 Deg.
c) 15 Deg. to 20 Deg.
d) 15 Deg. to 30
a) 5 Deg. to 10 Deg.
Each tooth on a broach is higher than the one before by an amount called the:
a) chip breaker
b) rake angle
c) depth of cut
d) land
c) depth of cut
Broaching is capable of producing a surface finish of:
a) 16 micrometers
b) 32 micrometers
c) 64 micrometers
d) 125 micrometers
b) 32 micrometers
The non-destructive inspection method that can be used to measure the wall thickness of closed vessels is the:
a) radiographic method
b) ultrasonic method
c) fluorescent method
d) magnetic particle method
b) ultrasonic method
How far is the centerline of the spindle from the edge of the work-piece when using a 0.200in diameter edge finder?
a) 0.300
b) 0.100
c) 0.200
d) 0.050
b) 0.100
When turning a taper on a lathe, where is the point of the cutting edge of the tool set?
a) perpendicular to the taper
b) on the centre height
c) 0.020 in above centre
d) 0.020 in below centre
b) on the centre height
In CNC machining, what is the term used for a set of instructions or blocks that can be inserted into a program and repeated when required?
a) miscellaneous function
b) diagnostics
c) sub-program
d) programmable increment
c) sub-program
Which type of hole requires a spiral fluted hand reamer?
a) oversized
b) oval-shaped
c) keyed or slotted
d) bell-mouthed
c) keyed or slotted
What product is used to check the final fit of mating tapers?
a) penetrating dye
b) lapping compound
c) Prussian blue
d) layout dye
c) Prussian blue
Which part of a lathe threading mechanism determines how fast the carriage travels?
a) lead screw
b) feed rod
c) feed clutch
d) crossfeed screw
a) lead screw
Which component is adjusted on a vertical band saw to cut an angular surface?
a) work table
b) saw guidepost
c) tension crank
d) carrier wheel
a) work table
How are feed rates expressed for milling operations?
a) meters per millimeter
b) feed per minute
c) inches per revolution
d) inches per minute
d) inches per minute
How do you accurately align a vise mounted on a milling machine table perpendicular to the column, and the vise should be aligned with?
a) dowel pins
b) square
c) dial indicator against the moveable jaw
d) dial indicator against the fixed jaw
d) dial indicator against the fixed jaw
Which of the following is the thread angle of an imperial thread?
a) 60 Deg.
b) 118 Deg.
c) 29 Deg.
d) 120 Deg.
a) 60 Deg.
Which of the following does a bolt that is tightened by turning counter-clockwise is said to have what?
a) left-hand thread
b) right-hand thread
c) pan-head
d) hardened shaft
a) left-hand thread
Which of the following types of threads is ideal for load support in one direction?
a) NC
b) Buttress
c) Square
d) NPT
b) Buttress
Which of the following would you use for accurate angle measurement?
a) tape measure
b) bevel protractor
c) gauge block and sine bar
d) vernier caliper
c) gauge block and sine bar
The Acme threading tool forms an include angle of how many degrees?
a) 30
b) 55
c) 29
d) 60
c) 29 deg.
In what position is the compound normally set for cutting right hand external Acme threads?
a) set a 90 degrees
b) 29 degrees to the right
c) 14 ½ degrees to the right
d) 14 ½ degrees to the left
c) 14 ½ to the right
Hand reamers can be readily identified by the?
a) length of the flutes
b) length of the body
c) markings on the neck
d) square on the shank
d) square on the shank
The cutting speed used to do a job depends on?
a) the work material
b) the condition of the machine
c) the tool material
d) all the above
d) all the above
A feed rate that is too low will..?
a) leave a very dull finish
b) speed up the job
c) dull the cutter quickly
d) burn the cutting edge
c) dull the cutter quickly
Direct indexing is performed?
a) with the worm engaged
b) on the spindle nose
c) through a gear train
d) on the side index plate
d) on the side index plate
A direct index plate with 24-holes is available. Which of the divisions can not be performed?
a) 3
b) 6
c) 8
d) 9
d) 9
The sector arms are used?
a) when direct indexing
b) on the side index plate
c) to divide a circle plate
d) none of the above
a) when direct indexing
Contoured surfaces are machined with?
a) contour saw
b) stagger tooth cutters
c) form relieved cutters
d) helical plain milling cutters
d) helical plain milling cutters
Helical milling cutters?
a) have a smooth cutting action
b) chatter easily
c) leave rough surfaces
d) cannot be re-sharpened
a) have a smooth cutting action
An adjustable boring head is needed to make?
a) holes in specific locations
b) true cylindrical holes
c) non-standard size holes
d) none of the above
b) true cylindrical holes
Vibration in a boring operation can be?
a) caused by an unbalanced cutting
b) caused by a long boring tool
c) stopped by increasing the feed rate
d) all of the above
d) all of the above
An advantage of turning between centers is that?
a) it produces less chatter than by other methods
b) A more positive drive is possible
c) A shaft can be removed or turned end to end without loss of concentricity
d) Long work can be supported in a steady rest so facing drilling or boring can be carried out
c) A shaft can be removed or turned end to end without loss of cencentricity
Driving force is transmitted to the workpiece when turning between centers by means of a?
a) three or four jaw chuck
b) drive plate and a lathe dog
c) trip dog that automatically stops rotation at a predetermined point
d) collet and drawbar
b) drive plate and a lathe dog
Which of the following, in reference to fasteners, does TPI stands for?
a) teeth per inch
b) taper per inch
c) tooling per inch
d) threads per inch
d) threads per inch
Which of the following are NPT threads are used for?
a) finer threads than UNEF are required
b) acme threads are required for the female thread
c) threading/pipe fitting
d) mating parts are subject to vibration
c) threading/pipe fitting
The gear ratio of a single reduction worm gear is determined by the number of teeth on the gear and from which of the following?
a) Diameter of the gear
b) Helix angle
c) Worm pitch
d) The number of thread on the worm
d) The number of thread on the worm
Which of the following is what you would call on the portion of tooth above the centerline?
a) Addendum
b) Dedendum
c) Pitch
d) Root
a) Addendum
A standard micrometer has a discrimination of what part of an inch?
a) .0001
b) .001
c) .010
d) .100
a) .0001
Live centers are?
a) hardened and serrated
b) soft metal
c) made with carbide inserts
d) hardened
d) hardened
The half nuts should be engaged when threading odd-numbered threads when the threading dial is positioned at?
a) any line
b) only one line
c) any numbered line
d) opposite lines only
d) opposite lines only
For threading, the spindle should be turning?
a) at about one-fourth normal turning speeds
b) the rpm given in standard charts for the type of metal you are working on
c) at the slowest speed the lathe can be set
d) none of the above
b) the rpm given in standard charts for the type of metal you are working on
Which of the following is referred to on a drawing has a dimension followed by two numbers such as +.002, -.002?
a) Tolerance
b) Allowance
c) Clearance
d) Tightness
a) Tolerance
When making one complete revolution, the distance a worm moves forward is called, which of the following?
a) Helix angle
b) Pitch
c) Lead
d) Tooth form
c) Lead
Herringbone gears are best described to have, which of the following?
a) helix
b) formed point at the gear center
c) straight teeth cut parallel to the shaft
d) minimal teeth in contact
b) formed point at the gear center
Which of the following is called the pitch circle of a gear?
a) Outside diameter
b) Pitch diameter
c) Diametric pitch
d) Circular pitch
b) Pitch diameter
Which of the following liquids cools the tool the quickest when tempering a hand tool?
a) oil
b) lime
c) coolant
d) water
d) water
A drive gear with 50 teeth turns at 300 RPM. The driven gear has 20 teeth. How many RPM is the driven gear turning at?
a) 750 RPM
b) 675 RPM
c) 800 RPM
d) 120 RPM
a) 750 RPM
( 50 x 300 / 20 )
Hypoid gears are best described as which of the following?
a) Operate at non-parallel, non-intersecting axis
b) Operate at parallel, intersecting axis
c) Operate at non-parallel, intersecting axis
d) Operate at parallel, non-intersecting axis
a) Operate at non-parallel, non-intersecting axis
If work is not flat, the first place to check is?
a) length of grinding stroke
b) wheel grade or hardness
c) wheel bearings
d) chuck alignment
d) chuck alignment
How can tapers be turned in a lathe?
a) With the compound taper attachment offset tailstock and tool methods
b) By the off-hand method the taper slide method
c) By the angular slide attachment the offset center and the single tool
d) None of the above
a) With the compound taper attachment offset tailstock and tool methods
If the compound swivel base is set on 60 degrees at the lathe centerline index, how many degrees will the reading be at the cross slide index?
a) 180
b) 30
c) 90
d) 45
b) 30
The formula for calculating the offset of the tailstock is?
Offset= Lx (D-d)
2xL1
Where L is the total length of the piece and L1 is the length of taper,
D is large dia and d is small dia.
If the shaft to be tapered on one end is eight inches long and taper is to be
three inches in length, the shaft dia is 1 ¼ inches and the small end of the
taper 1 inch, how many inches should the offset be?
a) 1/3 or .333
b) 2/3 or .666 8x(1.25-1)
c) 0.100 2x3
d) 0.250
a) 1/3 or .333
Offset= Lx(D-d)
2xL1
Offset = 8 x ( 1.25-1 )
= 2
2/3 = .666666
.666 / 2 = .3333
If a vertical mill table is loose and has side play, the best solution to alleviate side play is which of the following?
a) loosen the taper gib adjustment
b) tighten the taper gib adjustment
c) use a parallel clamp and angle plate to eliminate any movement
d) tighten the clamps that lock the table
b) tighten the taper gib adjustment
Tough material causes accelerated tool wear. What may a machinist do to reduce tool wear and possible tool breakage?
a) increase the spindle speed and feed
b) decrease the spindle speed
c) increase the spindle speed
d) switch tooling to non-coated high-speed steel end mills
b) decrease the spindle speed
The most accurate method for aligning a vise mounted on a vertical mill table is by using which of the following?
a) scale and measure distances
b) dial indicator mounted on the quill or in a collet
c) calipers, perform triangulation and apply roll pins
d) keys mounted on the bottom of the vise fitting the slots
b) dial indicator mounted on the quill or in a collet
Which of the following is the gauge block height for an angle of 9 degrees on a 10-inch sine plate?
a) 0.5673 inches
b) 0.9822 inches
c) 1.5643 inches
d) 2.1486 inches
c) 1.5643
The amount of stock removed by cylindrical from the diameter of a shaft in relation to the wheel in-feed is?
a) twice the in-feed
b) equal to the in-feed
c) half the in-feed
d) one quarter the in-feed
c) half the in-feed
To support two tons using a vertical lift, what diameter rope is needed?
a) 1/2 “
b) 1/4 “
c) 1 “
d) 3/4 “
a) 1/2 “
If using the same rope, what type of lifting technique has the least lifting capacity?
a) Basket hitch
b) 2 [art Bridle
c) Vertical hitch
d) Choker sling
d) Choker sling
Which of the following is a tag line used for?
a) secure the snatch block
b) prevent swinging of the load
c) assist the main-line in lifting
d) prevent the whip line from coming unraveled
b) prevent swinging of the load
Which of the following is the correct drilling operation for cutting a recess for a socket head cap screw?
a) spot-facing
b) counter-sinking
c) counter-boring
d) recessing
c) counter-boring
To thread to the bottom of a blind hole, which tap should you use?
a) pointed
b) plug
c) bottoming
d) taper
c) bottoming
The length of a tapped hole should be how many times the diameter of the screw?
a) 1/2
b) one and one-half
c) two times the diameter
d) three and a half
b) one and one-half
When tapping a blind hole you will require the use of?
a) flat end tap
b) spiral tap
c) bottoming tap
d) plug tap
c) bottoming tap
The pitch circle of a gear can be called?
a) pitch diameter
b) outside pitch
c) circular pitch
d) diametral pitch
a) pitch diameter
The type of gear that reduces the end thrust in a parallel gearbox is?
a) worm gear set
b) hypoid gears
c) herringbone gears
d) bevel gears
c) herringbone gears
The type of coupling does NOT require a key and/or key seat?
a) roller chain
b) compression
c) jaw
d) flanged
d) flanged
What is a dowel pin used for?
a) act as a location device
b) eliminate the need for bolts
c) used for screws
d) used as guides
a) act as a location device
How are external threads cut?
a) vice grips
b) die tap
c) T-handle tap wrench
d) bottom tap
b) die tap
Name the most accurate way used to measure axial movement in a shaft play?
a) vernier caliper
b) micrometer
c) dial indicator
d) depth gauge
c) dial indicator
Which of the following is the included angle of an acme thread?
a) 40 degrees
b) 60 degrees
c) 118 degrees
d) 29 degrees
d) 29 degrees
An electromagnetic chuck is used on a surface grinder because it?
a) holds work-pieces more firmly than hold down clamps
b) will hold any work-piece
c) makes every surface of a work-piece available for grinding
d) is the fastest way to set up most work
d) is the fastest way to set up most work
Which of the following is the most precise hand wheel control on the grinder?
a) chuck
b) traverse
c) cross-feed
d) down-feed
d) down-feed
For grinding most steels, the preferred abrasive is?
a) diamond
b) silicon carbide
c) aluminum oxide
d) cubic boron nitride
c) aluminum oxide
Grade in a grinding wheels specification refers to the?
a) strength with which the bond hold the grain
b) relative hardness of the abrasive grain in the wheel
c) dollar value of the abrasive grain
d) relative hardness of the bond in the wheel
a) strength with which the bond hold the grain
How do you know if a bearing is tight enough on the sleeve?
a) Sleeve is loose
b) Slight drag on the bearing
c) Bottoms out
d) Pre-load condition
b) slight drag on the bearing
Which of the following is the recommended amount of material to leave prior to hand reaming an 11/16” hole?
a) .003” to .005”
b) .006” to .010”
c) .001” to .005”
d) .015” to .025”
c) .001” to .005”
Which of the following types of blades should be used when cutting carbon steel with a bandsaw?
a) Alternating angled teeth 28 TPI
b) Regular tooth 10 - 16 TPI
c) Regular straight tooth 6 - 10 TPI
d) Wavy tooth, 36 TPI
c) Regular straight tooth 6 - 10 TPI
In accordance with rigging and common safety practices, what is the primary use of a double latched hook?
a) when shock load may free the load from the hook
b) when load hook angle is offset
c) on a snatch block
d) on personal safety harness
d) on personal safety harness
What is used to locate holes for punching?
a) cold chisel
b) scriber
c) centre punch
d) alignment punch
c) centre punch
The inertia of an object is?
a) it’s velocity
b) it’s density
c) resistance to movement
d) specific gravity
c) resistance to movement
The first thing to check for if you see chatter marks is?
a) abrasive grit size
b) wheel dressing
c) wheel grade or hardness
d) vibration
d) vibration
Which of the following combinations of gauge blocks from an 81-block set can be used to gauge a length of 0.9528 inches?
a) 0.152, 0.1002, 0.400
b) .1008, 0.452, 0.500
c) .1008, 0.102, 0.750
d) 0.1006, 0.862
c) .1008, 0.102, 0.750
Which of the following is the best technique for milling on a vertical mill that is not equipped with an automatic table?
a) conventional mill
b) spot-face
c) peck mill
d) climb mill
a) conventional mill
Which of the following is the main cause of warping when grinding long slender pieces?
a) structure of the wheel is too open
b) vibration of the work-piece during the grinding operation
c) heat checking due to a hard wheel
d) loose of cracked diamond used for wheel dressing
c) heat checking due to a hard wheel
How many degrees is the included angle of General Purpose Acme threads?
a) 60
b) 30
c) 14 ½
d) 29
d) 29
Bores of machine parts such as gears and pulleys are not made by drilling in a lathe without further machining because drills..?
a) tend to produce undersize holes that run eccentric to the work axis
b) are not made in standard shaft sizes
c) make bell mouthed holes that must be corrected by reaming or boring
d) tend to produce oversize holes that run eccentric to the work axis
d) tend to produce oversize holes that run eccentric to the work axis
On a reciprocating table surface grinder, the electromagnetic chuck is made of..?
a) cast iron
b) solid steel
c) alternating strips of steel and non-magnetic metal
d) alternating rings of steel and non-magnetic metal
c) alternating strips of steel and non-magnetic metal
The principal precaution in checking the work is to use?
a) double faced tape
b) at least half the available power
c) the least amount of power that will hold the work safely
d) on third to one half of the power available
c) the least amount of power that will hold the work safely
The table of a universal milling machine should be?
a) aligned before the vise is square
b) is longer than that of the plain milling machine
c) should be aligned after vise is squared
d) cannot be accurately aligned
a) aligned before the vise is square
The main advantage of boring over reaming in the lathe is?
a) boring corrects any eccentricity in the bore and reaming does not
b) boring corrects axial misalignment and reaming does not
c) better finishes are obtainable
d) finishing the bore to a precision diameter can be done more quickly
b) boring corrects axial misalignment and reaming does not
Under normal cutting conditions, the depth of cut for an end mill should be no more than?
a) ½ the cutting diameter
b) ¼ the cutting diameter
c) 2 times the cutter diameter
d) The diameter of the cutter
d) The diameter of the cutter
End mills capable of making their own starting holes are termed?
a) plunge cut
b) starting hole
c) center drilled
d) center cutting teeth
a) plunge cut
Carbide tipped end mills should be used to machine?
a) deep grooves
b) very soft material
c) highly abrasive materials
d) none of the above
c) highly abrasive materials
Milling cutters with carbide inserts are used to?
a) remove material efficiently
b) avoid re-sharpening
c) machine most materials
d) all of the above
d) all of the above
When milling a keyway into a shaft?
a) the cutter should be sharp
b) the cutter has to be the correct size
c) the cutter needs to be centered with that shaft
d) all of the above
d) all of the above
Chucks and face-plates are mounted on the spindle by means of?
a) Interchangeable spindle noses
b) any one of several types of spindle noses
c) circle of socket head cap screws
d) permanent assembly
c) circle of socket head cap screws
The independent chuck has?
a) Four jaws, each one can move without affecting the position of the other
b) Two, three or six jaws that all move in or out an equal distance
c) Three jaws that move independently of each other
d) special adjusting system that makes the jaws center round work more accurately
a) Four jaws, each one can move without affecting the position of the other
A steady rest should be used to?
a) hold the tool steady so it won’t chatter
b) support long shafts that are being threaded
c) support work-pieces that extend three diameters from the chuck
d) support long shafts
d) support long shafts
The follower rest is used for?
a) turning work-pieces without a center
b) Resting the tool so it will not cause the work to chatter
c) Support long springy work
d) Supporting long springy work by following the tool
d) Support long springy work by following the tool
You can set up a steady rest when the shaft has no center by?
a) Setting up a different diameter shaft that has a center and adjusts the jaws to it
b) Using a dial indicator to show run out which can be adjusted out by moving the jaws
c) Placing a center punch mark in the center of the shaft and measuring to the steady rest frame with a steel rule
d) Placing a punch mark in the center of the shaft and adjusting the steady rest jaws to align the punch mark to the dead center
b) Using a dial indicator to show run out which can be adjusted out by moving the jaws
Which of the following type of milling is used for non-ferrous milling?
a) Non-ferrous milling
b) Climb milling
c) Conventional milling
d) Fast speed
b) Climb milling
Which of the following is the visual difference between hot and cold rolled steel?
a) Hot rolled steel has better dimensional control
b) Hot rolled steel has a scaly surface
c) Hot rolled steel is painted for identification
d) Hot rolled steel has a bring finish
b) Hot rolled steel has a scaly surface
Which of the following best describes a zero mechanical state?
a) when machinery breaks down
b) a state where you lock out the machine’s electrical power supply
c) a safe condition where equipment has no stored energy, and all energy sources are made inoperative
d) when a power failure occurs
c) a safe condition where equipment has no stored energy. and all energy sources are made inoperative
Which of the following are four good electrical insulators?
a) Glass, air, plastic, porcelain
b) Plastic, rubber, wood, carbon
c) Paper, glass, air aluminum
d) Glass, wood copper, porcelain
a) Glass, air, plastic, porcelain
When taking a facing cut on a work-piece held in a chuck, the point of the tool should be?
a) on center
b) sharp with no radius
c) slightly below the center
d) slightly above center
c) slightly below the center
With relation to CNC repetitive cycle programming, which of the following does the D stand for in the code G71 P_Q_U_W_D_S_F_ ( rough turning and boring repetitive cycle )?
a) depth of cut for the roughing pass
b) tells the CPU how the X value must be adjusted
c) ratio of cut from the far to near surface
d) block number immediately following the G71
a) depth of cut for the roughing pass
When programming a multiple-start threading operation for a CNC machine, the shift amount is always equal to which of the following amount of the thread?
a) lag
b) lead
c) depth
d) pitch
d) pitch
In relation to CNC repetitive cycle programming and boundaries which of the following describes park location D?
a) XZ position of the tool before the repetitive cycle G71 is activated
b) first location chew off the work-piece before defining the part profile to be machined
c) last location on the work-piece defining the profile to be machined
d) position of the tool clear of the work-piece after the profile is machined
d) position of the tool clear of the work-piece after the profile is machined
Which CNC G-code cancels the mirror image coordinates for double turret turning centers?
a) G69
b) G70
c) G76
d) G90
a) G69
With relation to CNC linear interpolation programming what does the U refer to in G01 U_W_F_: ( incremental feed motion )?
a) program feed code
b) linear interpolation code
c) coordinate along the Z-axis
d) coordinate along the X-axis
d) coordinate along the X-axis
What does the W refer to in G01 U_W_F_: ( incremental feed motion ) with relation to CNC linear interpolation programming?
a) linear interpolation code
b) program feed code
c) coordinate along the X-axis
d) coordinate along the Z-axis
d) coordinate along the Z-axis
A common comparison measuring system for holes ranging from approximately ½ to 6 inches would be a?
a) binocular gauge and scale
b) telescoping gauge and micrometer
c) small hole gauge
d) dial bore gauge
b) telescoping gauge and micrometer
Which of the following does an M03 represent in relation to CNC turning machines and Miscellaneous M codes?
a) Spindle on in counter-clockwise rotation
b) Program stop and ends program execution
c) Optional stop used when occasional part inspection may be required
d) Spindle in clockwise rotation
d) Spindle in clockwise rotation
Correctly calculate the feed per minute on an 8 tooth CNC cutter that is rotating at 700 rpm and the chip load is 0.008 inch. The feed per minute will be how many inches?
a) 44.8
b) 22.9
c) 6.8
d) 38.2
a) 44.8
( 700 x 8 x .008 )
Which of the following does the acronym FN represent?
a) Fundamental fit
b) Force fit
c) Frontal fit
d) Fast fit
b) Force fit
What drives the work when it is held between centres on a lathe?
a) A drive mandrel
b) A drive dog
c) A centre
d) A 3-jaw chuck
b) A drive dog
What material is easily contaminated during the polishing process?
Sintered bronze
The distance a nut advances on a screw in one revolution is the:
- Lead
In order to drill a hole in a workpiece using a vertical milling machine that has a moveable spindle, you would need to include a command with a:
a) Negative Y-value
b) Positive X-value
c) Positive D-value
d) Negative Z-value
d) Negative Z-value
