ADDA DRAFTING CERTIFICATION: COMPETENCY
1(GENERAL TERMINOLOGY)
centimeters - Answer -1/100th of a meter
millimeters - Answer -1/1000ths of a meter
meter - Answer -basis for metric system; = to 100 cm, 1000mm, 10 dm, etc.
decimeter - Answer -1/10th of a meter
American Society of Mechanical Engineers - Answer -ASME
dekameter - Answer -10 meters
kilometer - Answer -100 dekameters; 1000 meters
25.4 - Answer -millimeters per inch
fraction - Answer -part of a whole, such has 1/2 or 1/4
1:2 - Answer -half scale
2:1 - Answer -double size
drawn to scale - Answer -drawing an object to a set proportion
metric system - Answer -decimal system of wights and measures based on the meter
and the kilogram; SI (international system) linear unit is millimeter
lettering - Answer -single stroke gothic; TOM Q. VAXY is all the letters that are as tall
as they are wide; drawn w/HB
foreshortened - Answer -surfaces do not give a clear or accurate representation of the
size or shape of the surface or features and should not be dimensioned; lines and
surfaces that are inclined to the picture plane appear this way
bisecting - Answer -dividing into two equal parts; drawn by setting compass length
greater than half of line's length and striking arc w/center at each endpoint, then drawing
a line perpendicular to the original line through the point where the arcs crossed
equilateral - Answer -all side lengths are equal
concentric - Answer -having a common center
, 180º - Answer -number of degrees in a triangle
360º - Answer -number of degrees in a circle [and quadrilateral]
quadrant - Answer -one of four sections into which the coordinate plane is divided
(and/or a circle)
revision block - Answer -placed in upper righthand corner of page; brief listing of
revisions made to a drawing since it was initially released to manufacture, includes
revision zone, letter, date, and name of revisor and revising checker
surface finish mark - Answer -can appear as checkmark, check with micron-
smoothness number in it, a V, or an S with a line through it where it intersects the object
line; indicates surfaces that are machine finished
8.5" x 11" - Answer -A-size layout
11" x 17" - Answer -B-size layout
17" x 22" - Answer -C-size layout
22" x 34" - Answer -D-size layout
34" x 44" - Answer -E-size layout
28" x 40" - Answer -F-size layout
beam compass - Answer -compass where arm is extended by beam; allows large
circles to be drawn
two-bevel scale - Answer -scale where cross-section looks like trapezoid
four-bevel scale - Answer -scale where cross-section looks like elongated hexagon
opposite-bevel scale - Answer -scale where cross-section looks like parallelogram
triangular scale - Answer -scale where cross-section looks like three-point star or
throwing star; most common used
v-type drafting machine - Answer -took place of t-squares along with elbow-type
elbow-type drafting machine - Answer -took place of t-squares along with v-type
1 bite - Answer -smallest amount of memory in computer
1(GENERAL TERMINOLOGY)
centimeters - Answer -1/100th of a meter
millimeters - Answer -1/1000ths of a meter
meter - Answer -basis for metric system; = to 100 cm, 1000mm, 10 dm, etc.
decimeter - Answer -1/10th of a meter
American Society of Mechanical Engineers - Answer -ASME
dekameter - Answer -10 meters
kilometer - Answer -100 dekameters; 1000 meters
25.4 - Answer -millimeters per inch
fraction - Answer -part of a whole, such has 1/2 or 1/4
1:2 - Answer -half scale
2:1 - Answer -double size
drawn to scale - Answer -drawing an object to a set proportion
metric system - Answer -decimal system of wights and measures based on the meter
and the kilogram; SI (international system) linear unit is millimeter
lettering - Answer -single stroke gothic; TOM Q. VAXY is all the letters that are as tall
as they are wide; drawn w/HB
foreshortened - Answer -surfaces do not give a clear or accurate representation of the
size or shape of the surface or features and should not be dimensioned; lines and
surfaces that are inclined to the picture plane appear this way
bisecting - Answer -dividing into two equal parts; drawn by setting compass length
greater than half of line's length and striking arc w/center at each endpoint, then drawing
a line perpendicular to the original line through the point where the arcs crossed
equilateral - Answer -all side lengths are equal
concentric - Answer -having a common center
, 180º - Answer -number of degrees in a triangle
360º - Answer -number of degrees in a circle [and quadrilateral]
quadrant - Answer -one of four sections into which the coordinate plane is divided
(and/or a circle)
revision block - Answer -placed in upper righthand corner of page; brief listing of
revisions made to a drawing since it was initially released to manufacture, includes
revision zone, letter, date, and name of revisor and revising checker
surface finish mark - Answer -can appear as checkmark, check with micron-
smoothness number in it, a V, or an S with a line through it where it intersects the object
line; indicates surfaces that are machine finished
8.5" x 11" - Answer -A-size layout
11" x 17" - Answer -B-size layout
17" x 22" - Answer -C-size layout
22" x 34" - Answer -D-size layout
34" x 44" - Answer -E-size layout
28" x 40" - Answer -F-size layout
beam compass - Answer -compass where arm is extended by beam; allows large
circles to be drawn
two-bevel scale - Answer -scale where cross-section looks like trapezoid
four-bevel scale - Answer -scale where cross-section looks like elongated hexagon
opposite-bevel scale - Answer -scale where cross-section looks like parallelogram
triangular scale - Answer -scale where cross-section looks like three-point star or
throwing star; most common used
v-type drafting machine - Answer -took place of t-squares along with elbow-type
elbow-type drafting machine - Answer -took place of t-squares along with v-type
1 bite - Answer -smallest amount of memory in computer
