Exam (elaborations)
Imse 250 Final (3).
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Exam of 6 pages for the course Imse 250 at Imse 250 (Imse 250 Final (3).)
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Imse 250 FinalSingle point cutting involves the removal of metal from a workplace using cutting tools that only
have one primary cutting edge. Which is not a single cutting process? - ANS-Drilling a hole
using a twist drill lathe
Generally speaking, the _______ the rake angle, the sharper cutting edge. - ANS-Larger
For a given uncut chip thiscness, a small shear angle means a ______ cutting force. -
ANS-High
Which one of the following input parameters is the LEAST associated with continuous chip
generation? - ANS-Large depth of cut
______ occurs on the tool face that interacts with the newly-generated surface of a workplace -
ANS-Flank wear
Which represents the surface roughness from smoothest to roughest? -
ANS-Honing<Reaming<Drilling
For either slab of face milling, surfaces can be generated by two different methods: up milling
and down milling. In which method a higher clamping force is needed to hold the workplace? -
ANS-Up milling
Close pockets are usually machined by________ - ANS-End milling
For a standard twist drill, the cutting speed along with the main cutting edges is________ -
ANS-Different at different points
Abrisive machining is a mixture of_______ - ANS-cutting, plowing, and rubbing.
Grinding operation is widely used in automotive industry, but has no applications in
semiconductor industry - ANS-False
Grain size, bond type and pore size all affect wheel performance. Which is not true. -
ANS-Grinding wheel labeled by a larger mesh size usually produces rougher surfaces.
The surface roughness and accuracy produces by grinding is generally ______ that produces
by turning or milling. - ANS-better than
The material removal rate of a typical grinding process is ______ that produced by milling -
ANS-lower than
, In nontraditional machining processes, the hardness of the machine tools must be greater than
workplace being machined. - ANS-False
Abrasive waterjet machining belongs to ______ non-traditional machining processes. -
ANS-mechanical
Which one of the following is not an advantage of chemical machining? - ANS-high material
removal rate
Which one of the following does not generate a heat affected zone? - ANS-Abrasive waterjet
Machining
Which one of the following is not among the limitations of electrical discharge machining? -
ANS-Can cut only 1 hole at a time
In ultrasonic machining, either the tool or the workplace vibrated at a high frequency. -
ANS-True
Both ultrasonic machining and rotary ultrasonic machining can machine square cavities? -
ANS-False
In solid state welding, the temperatures at the welding interface _____ the melting point of the
workplace materials. - ANS-will not exceed
Why are some parts machined in two different parts? - ANS-The joined part is typically stronger
than a single piece.
Welding processes _____ generate residual stress in a joint. - ANS-will
Riviting is used when - ANS-the joined parts will not be separated.
Resistance welding is in the group of_______ welding - ANS-Fusion
Brazing involves melting both the filler material and the workplace. - ANS-False
Which on elf the following reinforcing fibers in composite materials has the highest temperature
resistance? (Space shuttle) - ANS-Ceramic
Which kind of matrix can be reused? - ANS-Thermoplastics
In the carbon fiber reinforced plastic composites, the major function of fibers is to _______ -
ANS-Support the load.
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