203 a b review Flashcards
(53 cards)
what is advantage of isometric drawings over other drawing
seen in all the directions
what orientation is always used on isometrics spool sheets
north
a precision dimension is usually expressed in what unit?
decimals
Can all sides of a oblique drawing be drawn to scale?
no
dimensions should always be placed _____ the object for clarity.
outside
for general welding work, you should be able to read an imperial rule to the nearest:
1/16
which of the following defines a polygon?
closed figure bounded by 3 or more straight lines
how are all views shown in an orthographic projection
vertical horizontal and parallel to each other
how are are baseline dimensioned
taken from common extension line
when tolerance are encountered, it is a good practice to always use the _____ measurements for layout work.
maximum
why should t squares only be used from one side of the drafting board?
the board edges are not always parallel
what do oblique drawings use foreshortening for.
reduce the dept to make it look more realistic
a metric rule is graduated in?
mm
what are the three types of pictorial drawings?
perspective oblique isometric
how many view are normally used to developed an orthographic projection?
3
what views are shown most often in orthographic projections?
top front right
which of the following tools would be used to draw vertical and included lines on a drawing?
T-squares set squares
how are arcs curves dimensioned?
radius and focal point
what is one aspect of perspective drawings?
difficult to draw
how do perpendicular lines appear?
90 degree angle
should drawings combine fractions and decibels dimensioning?
no
what is four-sided figure with two parallel sides called?
trapizoide
will title block contain tolerances for drawing?
yes
what are the receding lines on an oblique drawing usually drawn at?
45