QUESTIONS WITH DETAILED VERIFIED AND 100%
ACCURATE ANSWERS BRAND NEW EXAM
ALREADY GRADED A+ PASS
Fundamental Rules of Dimensioning - ANSWER -1. Each Dimension has a
tolerance
2. Dimensioning and tolerancing should be complete so there is a full
understanding of the characteristics.
3. Each necessary dimension of an end product shall be shown. No more
dimensions than those necessary.
4. The drawing should define a part without specifying manufacturing methods.
5. Dimensions should be arranged to provide required info for optimum
readability. Dimensions should be shown in profile view.
Extension Line - ANSWER -a thin dark line extending from an object that show
the limits of a dimension line.
Baseline Dimensioning - ANSWER -System of dimensioning in which all
dimensions are placed from a datum and not from feature to feature. Also referred
to as Datum Dimensioning.
Chain Dimensioning - ANSWER -Also known as point-to-point dimensioning
where dimensions are established from one point to the next.
Slots - ANSWER -made by using milling bits
unilateral tolerancing - ANSWER -deviation is one direction from basic size
selective assembly - ANSWER -measuring parts after they're machined and
matching up with appropriate mating parts. Looser fits save money.
Basic Size - ANSWER -The size from which the limit dimensions were derived
, hole basis/basic hole system - ANSWER -lower limit of the hole
shaft basis - ANSWER -basic size applied to upper limit of a shaft.
RC - ANSWER -Running/Sliding clearance fit. Increases slowly in diameter.
LC - ANSWER -Locational clearance fit. Normally stationary, but can be freely
assembled or disassembled.
LT - ANSWER -Locational transition fit. Accuracy is important, but it can have a
small clearance.
LN - ANSWER -Locational interference fit. Accuracy of location is of prime
important. Not for frictional fits.
FN - ANSWER -Force/Shrink Fit. Maintains constant bore pressure, but varies
with diameter.
Loose running fit - ANSWER -for wide commercial tolerances or allowances on
external members.
Free Running Fits - ANSWER -Not for use when accuracy is essential. Large
temp pressures, high running speed. Heavy pressures
Close Running Fit - ANSWER -used on highly accurate machines
sliding fit - ANSWER -not intended to move and turn freely and locate accuratly
locational clearance fit - ANSWER -snug fit for stationary parts
locational transition fit - ANSWER -Provide for accurate location and compromise
between clearance and interference.