Machine Tool Practices, 11e (Kibbe)
Section A – Introduction
1) An apprentice machinist learns the trade by entering a formal training program sponsored by
private company, trade union, or government entity.
2) After completing an apprenticeship and apprentice is then called an indentured machinist.
3) Shops that do not produce parts for other companies are called job shops.
4) A process plan details all of the things that need to be done to manufacture a part.
5) Process plans can also also called routings or routers.
6) If a personone has 10 years of experience and trained at least 3 years under s master machinist
they are given the title of journeyman machinist.
7) A Tool & Die apprenticeship is usually 5 years.
8) Job shops do not normally have their own products.
9) What is TPS?
A) Total Product Solution
B) Total Production System
C) Total Productivity System
D) Toyota Production System
10) Lean manufacturing is concerned with producing the product with fewer resources.
11) Overproduction is defined as making a product before it is actually required.
12) Polka-Yolk is a Japanese word that means mistake-proofing or fail-safe.
13) Transporting products between processes is a cost that does not add any value to the product.
14) Lean manufacturing identifies 5 typical wastes in manufacturing.
145) The term Five S comes from the Japanese.
156) Poka-Yoke uses the rate of demand to control the rate of production.
167) Kanban is a Japanese word that means mistake-proofing or fail-safe.
178) Kanban is not an inventory control system. It is a scheduling system that helps determine
what to produce, when to produce it, and how many to produce.
189) Proper dress includes:
A) Short hair and short sleeve shirt
B) Solid shoes, short or secured hair and a short sleeve shirt
C) Any shoes, short hair and short sleeves
D) Solid shoes and a shop coat
1920) A ________ contains information about the properties of particular chemicals, materials,
and other substances.
201) Compressed air may:
A) Injure skin
B) Cause metal chips to fly
C) Injure ears
D) Cause all of the above
212) Grinder operations require that:
A) Side shield safety glasses be worn
B) Dust must be controlled
C) Plain safety glasses be worn and dust controlled
D) Side shield safety glasses be worn and dust controlled
223) To protect hands:
A) Keep them out of danger by thinking about safety
B) Wear gloves
C) Clean chips with a brush instead of hands
D) Both A and C
234) Grinding dust can:
A) Be extremely fine metal particles
B) Be controlled using coolants
C) Be a hazard to health
D) All of the above
245) Gloves should be worn when cutting hot chips.
256) Safety is:
A) Something that pertains only to being inside the machine shop
B) An attitude that should be considered in everything you do
C) Really only important to beginners
D) Something that pertains only to machine tool operations
267) When cleaning a machine tool after use:
A) Use a brush to remove chips from the machine
B) Blow chips with compressed air as long as the air pressure is not over 10 PSI
C) Wash the entire machine with a non-flammable cleaning solvent
D) Use a rag to remove chips from the machine
278) The right way (position) to lift is:
A) Lean over the load and lift it slightly to see how heavy it is
B) Weigh the load to see if it is over 57 pounds
C) Size up the load to determine if it is within your lifting capacity
D) Keep the back straight, bend knees and squat down
289) You are going to do maintenance on a permanently wired machine tool. You should first:
A) Have another person stand by the machine while you work
B) Switch off the circuit breaker to the machine, tag and/or lock out the switch with an
appropriate tag and lock
C) Call an electrician to disconnect the machine wiring
D) Turn the machine switch to off
2930) ________ procedures are intended to protect workers when machine maintenance is
performed.
301) Oil soaked rags:
A) Can be a health hazard
B) Should be stored in an approved safety can
C) A, B, and D
D) Can be a fire hazard
32) An auxiliary view is normally used to show a hidden feature.
313) The difference between a screw and a bolt is:
A) Length
B) Application
C) Class of thread
D) Head shape
324) Cap screws are:
A) Also called machine bolts
B) Square headed
C) Precision screws
D) The same as machine screws
335) The term unified coarse thread refers to the number of threads per inch on standard threaded
fasteners.
346) Pitch refers to the number of threads per inch of length.
357) Set screws are used:
A) In place of machine screws
B) Because they have hex heads
C) To secure pulleys to shafts
D) Because they are soft
368) Thread classifications of A or B refer to whether the thread is internal or external. The letter
“A” would be used with an external thread.
379) A M10 × 1.5 metric thread would have a thread diameter of 1.5 mm.
3840) Thread fits are specified as 1, 2, or 3. Class 1 fits are the tightest fit.
3941) Thread forming screws are used because:
A) They eliminate the need for tapping
B) They are light
C) Of their appearance
D) They are small
402) A regular nut is:
A) Hardened
B) Thinner than a jam nut
C) Slotted
D) Thinner than its size designation
413) To protect the end of a threaded rod, use a:
A) Plastic tube
B) Pipe cap
C) Thread protector
D) Cap nut
424) An external type tooth lock washer:
A) Provides more friction than an internal tooth lock washer
B) Is used only with 82 degree flat head screws
C) Provides less friction than an internal tooth lock washer
D) Provides the same friction as an internal tooth lock washer
435) Dowel pins are:
A) Painted
B) Made from dowel stock
C) Heat treated and precision ground
D) Made from brass
446) A bearing is often held on a shaft with a (an):
A) Locktite
B) Knurled surface
C) Internal retaining ring
D) Bearing holder
457) Where extremely heavy shocks loads or high torques are encountered, use a:
A) Heavy duty Woodruff key
B) Feathered key
C) Lock washer
D) Tapered key
468) The most common print format the machinist will see is the:
A) Orthochromatic
B) Right angular
C) Two view
D) Orthographic
479) If a blueprint is drawn ½ scale. That would mean that the drawing is twice the size of the
actual part.
4850) Scale numbers serve the same purpose as the letters and numbers on the borders of maps.
4951) Not all features will have specific tolerances shown on a blueprint.
502) If a feature on a print does not have a specified tolerance, there is no tolerance for that
feature.
5351) An isometric drawing is one method used to represent an object in three dimensions.
524) In an orthographic drawing the baselines of the part are drawn at a 30-degree angle to
horizontal.
535) Surface finish has three components: lay, surface roughness, and waviness.
546) The most common measure of surface finish is average roughness.
557) When machining a part, the machinist should always try to get the best surface finish
possible.
568) First-angle projection is the one used in America.
579) What type of drawing is typically used in maintenance manuals?
A) Exploded
B) Isometric
C) Orthographics
D) Section
5860) An auxiliary view is normally used to show a hidden feature.
5961) Object lines are thick solid lines that outline all surfaces of a part that are visible to the
eye.
602) A dimension line is a thin solid line that shows the extent and direction of a dimension.
613) Features should be shown in a view where they appear to be true to their size so that they
can be dimensioned. Section Views are used for this purpose.
624) The top, front, and right-side views are the most common on typical drawings.
635) There are 6 possible standard views on a blueprint.
646) Which of the following are blueprint line types? (choose two)
A) Phantom, extension, break, section
B) Leader, extension, ghost, cutting plane
C) Cutting plane, section, auxiliary
D) Ghost, auxiliary, section, break
657) Phantom lines are thin lines that can be used to indicate alternate positions of the parts of an
object.
668) The tolerance of a bore is 1.250 plus or minus .005. The tolerance is:
A) Unilateral
B) Bilateral
C) Standard
D) None of the above
679) After boring the hole through the coupling, a machinist measures the bore diameter to be
1.251 inches. The tolerance was 1.250 plus or minus .005. It can be concluded that the diameter
of the bore is:
A) Too large
B) Within acceptable tolerance
C) Exactly as specified on the drawing
D) Too small
6870) The tolerance of the keyset width is .125 plus .002 minus .000. It is a ________ tolerance:
A) unilateral
B) 0.002 inch “absolute”
C) bilateral
D) unidirectional
6971) A transition fit exists when two mating parts may have an interference fit or a clearance fit
when assembled.
702) Countersinking is a machining operation in which the end of a hole is shaped to accept a
flat head screw.
713) Counterboring is a machining operation where the end of a hole is enlarged in diameter so
that a bolt head may be recessed.
724) There are three basic types of fit: clearance; drive, and interference.
735) A tolerance does not have to be the same in the positive and negative specification for a
feature.
746) On many drawings, tolerances will be specified at the specific feature’s dimension. If no
specific tolerances are specified at the feature’s dimension, there is no tolerance for the feature.
757) A limit dimension shows the upper and lower limit for the allowable size.
768) CS is an abbreviation for countersink.
779) CSK is an abbreviation for countersink.
7880) The abbreviation for bolt circle is Bltcirc.
7981) Geometric tolerancing is designed to establish specifications so that parts will function as
designed.
802) The difference between GD&T tolerancing and regular tolerancing is that regular tolerances
are based on the part’s function.
813) GD&T can actually allow larger tolerances while ensuring the parts will function properly.
824) Geometric tolerancing utilizes a rectangular tolerance zone.
835) Datums are reference points, lines, areas, and planes that are theoretically exact for the
purpose of calculations and measurements.
846) The term basic dimension (or true position) represents a theoretically exact dimension
describing the location or shape of a part feature.
857) A datum does not have to be a surface.
868) On an external cylindrical feature MMC would be the high limit of the feature tolerance.
879) MMC for a hole would bet the largest size hole allowed by the tolerance.
8890) Unless MMC or LMC is specified on the drawing, the tolerance zone size remains the
same even though the feature size changes.
8991) A parallel tolerance specifies a tolerance zone defined by two parallel planes within which
all points on the surface must lie. The tolerance is specified by a zone formed by two parallel
planes.
902) With a line profile, the tolerance applies to each checked line. The points on one line are
compared with the points on other checked lines.
913) In a surface profile all points on the surface must fall within the tolerance zone.
924) Note that when checking circularity, more than one circle might be checked on a diameter,
but all checks are independent for circularity.
935) A flatness tolerance does not have to be related to a datum.
946) When straightness is inspected each line checked on the surface is independent.
957) The exact, or true, position of the feature is indicated by its basic dimensions.
968) Maximum material condition (MMC) specifies a minimum size and positional location of
the hole.
979) Circular runout is used to provide control of the circular elements of a surface.
98100) The MMC specification adds a bonus tolerance to a location based on the hole size.