Practice 4th Year Exam Flashcards
To prepare for final exam.
How is the length of a file determined? A) from the heel to the point B) from the tang to the point C) from the point to the face D) from the handle to the point
A) from the heel to the point.
To obtain a fine finish when draw filing you should use a: A) single cut file B) second cut file C) double cut file D) curved cut file
A) single cut file
A long angle file is usually used for: A) parts requiring special shapes B) lathe work C) sharpening saw teeth D) none of the above
B) lathe work
To help prevent "pinning" when filing it is good practice to: A) coat the teeth with white lead B) wipe it on your coveralls C) oil the file D) rub chalk into the teeth
D) rub chalk into the teeth
The proper cut of file to use for soft metal such as brass would be: A) smooth cut B) second cut C) rough or coarse cut D) single cut
D) single cut
When cutting soft materials such as copper, the cutting edge of a flat chisel should be ground to approximately: A) 45 degrees B) 60 degrees C) 70 degrees D) 90 degrees
B) 60 degrees
or
C) 70 degrees
The table on a contour band saw an be tilted; A) 10deg left, 45deg right B) 45deg either direction C) 12deg either direction D) 0deg either direction
A) 10deg left, 45deg right
What is the name of saw teeth in a straight row? A) buttress B) claw C) precision D) straight
C) precision
A 1" diameter aluminum shaft is to be cut with a hand hacksaw. Which of the following saw blades would be most appropriate? A) 32 TPI B) 24 TPI C) 18 TPI D) 14 TPI
D) 14 TPI remember 2 1/2 teeth in the work minimum.
When using a hacksaw, apply pressure: A) only on the forward stroke B) only on the return stroke C) on both forward and return D) it doesn't really matter.
A) only on the forward stroke
The included angle of a prick punch for use on 1040 steel with an HBN of 180 would be: A) 15deg B) 30deg C) 60deg D) 90deg
B) 30deg
or
C) 60deg
The front end of a hand reamer is: A) square B) tapered C) relieved D) with out flutes
B) tapered (hand reams are tapered with a square drive end)
What is the shape of the tip on a Phillips screwdriver A) cross tip B) square tip C) hexagonal tip D) straight tip
A) cross tip
When you select a hacksaw which of the following points dictate the number of teeth per inch required? A) thickness of material B) length of cut C) cutting speed of the material D) all of the above.
A) thickness of the material
The correct term to use when referring to the groove made by the hacksaw cut. A) slot B) swarf C) srew D) kerf
D) kerf
The cutting action of a hand reamer is like: A) a machine reamer B) an end mill C) a scraping tool D) a rose reamer
C) a scraping tool
The tap drill size should be:
A) larger than the tap
B) larger than the root diameter of the bolt
C) larger than the root diameter of the nut
D) equal to the major diameter
B) larger than the root diameter of the bolt
Concrete or masonry drills have \_\_\_\_\_\_\_ tips A) hardened B) annealed C) carbide D) high speed
C) carbide
The best locking action is attained by using a \_\_\_\_\_\_\_\_ type lock washer. A) tooth B) spring C) conical D) flat
A) tooth
The included angle of a center punch is: A) 15deg B) 30deg C) 60deg D) 90deg
D) 90deg
What is the tip shape of a Robertson screwdriver? A) cross tip B) square tip C) hexagonal tip D) straight tip
B) square
If a shop drawing has no tolerance shown for fractional dimensions, the tolerance is generally taken as: A) +/- .001" B) +/- 1/64" C) +/- .010" D) +/- 1/32"
B) +/- 1/64”
The cross sectional representation of steel would be ____________ lines drawn at 45deg:
A) parallel equally spaced 45deg solid lines
B) parallel double solid 45deg lines
C) 45deg solid line with a dashed line between each solid line.
D) 45deg parallel solid lines with perpendicular dashes equally spaced.
B) parallel double solid 45deg lines
The maximum clearance that could exist between a shaft sized .749" +.000" -.001" and a bore sized .750" +.001" -.000" will be: A) .002" B) .003" C) -.002" D) -.003"
B) .003”
The three dimensional view is refered to as: A) oblique B) orthographic C) perspective D) isometric
D) isometric
An obtuse angle is: A) greater than 90deg B) less than 90deg C) greater than 45deg D) less than 45deg
A) greater than 90deg
A straight line touching the circumference of a circle only at one point is called: A) chord B) sector C) tangent D) diameter
C) tangent
When setting a surface gauge, make the final adjustment with the: A) V-notch cut in the base B) thumbscrew holding the scriber C) thumbscrew holding the spindle D) adjusting screw on the base
D) adjusting screw on the base
Hermaphrodite calipers are used for: A) locating the center of a shaft B) scribing a line parallel with an edge C) scribing a line parallel with a shoulder D) any of the above
D) any of the above
A 0 to 25mm micrometer has 50 grads around the thimble and 50 revolutions of the thimble is the complete range of the micrometer. What is the pitch of the spindle? A) .5cm B) .5mm C) 5.0mm D) 50.0mm
B) .5mm
A universal bevel protractor has 12 divisions on either side of zero on the vernier plate, to what degree of accuracy can it be read? A) .5deg B) .5 minutes C) 5.0 minutes D) 5.0deg
C) 5.0 minutes ( 60 minutes to a degree. 60/12)
In the Metric system of measurement one one - hundredth of a meter is a: A) hectometer B) millimeter C) centimeter D) decimeter
C) centimeter
To convert an inch reading to millimeters, you must multiply by: A) 2.54 B) 25.4 C) 39.37 D) none of the above
B) 25.4
Each graduation on the thimble of a metric micrometer is equal to: A) .01mm B) .10mm C) .02mm D) .001mm
A) .01mm
The formula to determine the circumference of a circle is: A) 2xr B) .262xD C) .7854 x r D) none of the above
D) none of the above (pi x R squared)
The most accurate method of measuring the pitch diameter of a screw thread is: A) with thread gauges B) the three wire method C) the optical comparator D) with a thread micrometer
B) 3 wire method MOW= E-0.86603P-3W E= M+ 0.86603+3W W= .57735xP P=pitch E= P dia MOW= measurement over wires
One foot is equal to: A) 25.4 centimeters B) 25.4 millimeters C) 30.48 centimeters D) 30.48 millimeters
A) 25.4 centimeters
The basic linear unit of the metric system is: A) centimeter B) meter C) kilometer D) millimeter
B) meter
The degree of accuracy of a standard English Micrometer is: A) .0001" B) .0005" C) .001" D) .01"
C) .001”
7/8 - 14 UNC - 1A The "1" in the above thread specification represents: A) internal thread B) class of fit C) style of thread D) external thread
B) class of fit
The pitch of a screw thread is equal to:
A) the distance between the crests of adjacent threads
B) the reciprocal of he threads per inch
C) the lead divided by the number of starts
D) all of the above
D) all of the above
The standard taper per foot on a National Pipe Thread is: A) 3/8 inch per foot B) 3/16 inch per foot C) 3/4 inch per foot D) none of the above
C) 3/4 inch per foot
Which of the following does not apply to an interference fit: A) a shrink fit B) a press fit C) a slip fit D) a push fit
C) a slip fit
The taper per foot on a standard taper pin is: A) 1/4 inch per foot B) 5/16 inch per foot C) 3/16 inch per foot D) 1/8 inch per foot
A) 1/4 inch per foot
The combination drill and countersink is commonly referred to as a: A) spot facer B) center drill C) countersink D) pilot drill
B) center drill
How much stronger is a 100% depth tapped thread than a 75% depth tapped thread?
A) 50%
B) 25%
C) 5%
D) 15%
C) 5%
The best method for making large quantities of bolts, screws, and studs is:
A) in the lathe
B) by thread milling
C) by thread rolling
D) by thread grinding
C) by thread rolling
A threaded fastener that screws into one part and bears against an inner part is called a:
A) hex head bolt
B) set screw
C) stove bolt
D) cap screw
B) set screw
What type of fastener would be required by the following: 1/2 - 13 UNC - 3B
A) loose nut
B) tight bolt
C) tight nut
D) loose bolt
C) tight nut
The cutting speeds for materials are given in: A) surface feet per minute B) surface feet per second C) revolutions per minute D) inches per minute
A) surface feet per minute
The included angle for a countersunk hole for a flat head machine screw is: A) 60deg B) 95deg C) 82deg D) 71deg
C) 82deg
A tap drill size is approximately equal to:
A) half the outside diameter
B) twice the minor diameter
C) the minor diameter
D) the major diameter plus the minor diameter
C) the minor diameter
One of the purposes that a flute serves in a reamer is to: A) form the cutting edge B) relieve the strain on the reamer C) flute out the metal D) reduce the cutting action
A) form the cutting edge
The drill you should use before machine reaming a 1/2" hole is: A) 31/32" B) 15/32" C) 33/64" D) 31/64"
B) 15/32” (=> 1/2 is a 32’nd)
The speed for machine reaming should be: A) 3/4 that of drilling B) the same as drilling C) half that of drilling D) twice the drilling speed
C) half that of drilling ( 1/2 speed twice feed)
What is the tap drill size for a #10 - 32 UNF machine screw: A) 5/32 (.1562) B) #21 (.1590) C) 11/64 (.1719) D) #24 (.1520)
B) #21 (.159) [ Machine screw # x .013 + .06 less one pitch ]
A 3 or 4 fluted drill is commonly called a: A) gun drill B) precision drill C) core drill D) spade drill
C) core drill
A twist drill with high helix flutes is better suited for drilling: A) steel B) aluminum C) brass D) cast iron
B) aluminum
A tool that can be used for spot facing is a: A) countersink B) counter bore C) spotter D) drill
B) counter bore
For drilling in steels with hardness of 40RC, a twist drill should be sharpened to which of the following point angles: A) 60deg B) 90deg C) 118deg D) 135deg
D) 135deg
A lathe has a cross slide screw with 8 TPI. The cross slide has 125 graduations. How much stock is removed from the job when the tool is advanced three graduations? A) .003" B) .006" C) .009" D) .012"
B) .006” [ .001” per grad = .003” radially = .006” off the material size
A double start screw thread has a lead of .250", this means that the number of threads per inch would be: A) 2 B) 4 C) 6 D) 8
D) 8 [ lead / # of starts = pitch ]
What would be the best wire size to use when measuring a 7/16 - 14 UNC bolt using the 3 wire method: A) .0412" B) .0438" C) .0464" D) .0715"
A) .0412 [BWS= .57735 x pitch]
Which of the following gear trains would be used for cutting 28TPI on a lathe equipped with a 4TPI lead screw:
A) drivers 84 & 48; driven 24 & 24
B) drivers 24 & 48; driven 84 & 48
C) drivers 24 & 24; driven 48 & 84
D) drivers 24 & 84; driven 48 & 24
C) drivers 24 & 24; driven 48 & 24
Screw thread specifications include: diameter, threads per inch, class and \_\_\_\_\_\_\_\_\_\_\_\_\_ A) thread lead B) thread angle C) type of thread D) head size
C) type of thread
In reference to threads, how many classes of fits are used? A) two B) three C) four D) five
B) three
The American National thread form has: A) 60deg rounded crests & roots B) 60deg flat crests & roots C) 60deg flat or rounded crests & roots D) 60deg sharp crests & roots
B) 60deg flat crests & roots
The Unified thread form has: A) 60deg rounded crests & roots B) 60deg flat crests & roots C) 60deg flat or rounded crests & roots D) 60deg sharp crests & roots
C) 60deg flat or rounded crests & roots
To square a tap on a lathe when tapping a hole: A) a square is used B) a centering plug is used C) a tailstock dead center is used D) the tool holder is used
C) a tail stock dead center is used
The center gauge is used to: A) center the threading tool B) gauge the pitch of the thread C) check the angle of the threading tool D) all of the above
D) all of the above
The "best wire size" for measuring a Unified thread could be found by the formula: A) .5 x P x sec 1/2 incl. angle B) (sec 1/2 incl. angle x p) / 2 C) .57735 x P D) any of the above
D) any of the above
The number of threads per inch that are cut on a lathe depends on the number of turns the work makes and the: A) ratio of the spindle speed B) distance the carriage travels C) SFPM the work travels D) amount feed used
B) the distance the carriage travels
A plain mandrel has a taper per foot of approximately: A) .001" to .003" TPF B) 5/8" TPF C) .006" to .008" TPF D) it is not tapered
C) .006” to .008” TPF
When filing on a lathe the operator should file:
A) left handed
B) right handed
C) either right or left handed
D) right handed with the lathe in reverse
A) left handed
The pitch of a screw thread is usually determined by measuring:
A) the major diameter with a micrometer
B) the fattener grip length with a rule
C) the threads per inch with a thread gauge
D) the depth of thread with a depth micrometer
C) the threads per inch with a thread gauge
A taper is being turned and a machine with a telescopic taper attachment. When the taper is checked it is found to have a slight bulge in the middle. This is caused by: A) a dull tool bit B) backlash in the cross slide C) tool not on center D) tail stock offset
A) a dull tool
On a taper turning attachment apart from taper per foot what else would the scale be graduated in?
A) corresponding included angle
B) degrees and minutes
C) degrees
D) required movement for a tailstock offset
C) degrees
Which of the following is not a standard taper? A) Brown & Sharp B) Jarno C) Morse D) Jacobson
D) Jacobson
The included angle of a lathe live center is: A) 30deg B) 59deg C) 60deg D) 61deg
C) 60deg
When cutting a 14TPI thread with a 4TPI lead screw, which positions on the thread dial could be used: A) same position every pass B) opposite positions C) any numbered line D) any line
D) any line
To turn a #4 Morse taper by using the taper attachment you would set the graduated scale at approximately: A) 1/2" TPF B) 5/8" TPF C) 3/4" TPF D) .600 TPF
B) 5/8” TPF
When facing a piece of steel in a chuck it is important to set the tool face: A) slightly above the work center B) slightly below the work center C) .010" away from the face of the work D) on the work center line.
D) on the work center line
