MAE 1351 EXAM 3 Questions With Correct Answers
Total runout (runout tolerance)[two arrows] - Correct Answer 3D control for rotating parts relative to a datum axis. (cylindrical surface = controls circularity, straightness, taper, concentricity, and surface profile; flat surface = controls wobble...
MAE 1351 EXAM 3 Questions With
Correct Answers
Total runout (runout tolerance)[two arrows] - Correct Answer 3D control for rotating
parts relative to a datum axis. (cylindrical surface = controls circularity, straightness,
taper, concentricity, and surface profile; flat surface = controls wobble, perpendicularity,
and flatness)
Basic dimensions (those with a box around them)... - Correct Answer are theoretically
exact and locate the perfect position of features from clearly identified datums
The feature control frame - Correct Answer contains the geometric characteristic
symbol, the geometric tolerance, and the relative datums
Free running fit - Correct Answer not for use where accuracy is essential, but are good
for large temperature variations, high running speeds, and heavy journal pressures
A dimension is expressed to the same number of inches of decimal places as its
________. Zeros are added to the _____ of the decimal point where necessary -
Correct Answer tolerance; right
ASME stands for - Correct Answer American Society of Mechanical Engineers
Most drawings conform to the ______ system or they conform to the ____ system -
Correct Answer SI; U.S. Customary
Where the dimension is less than one millimeter... - Correct Answer a zero precedes
the decimal point
Where the dimension is a whole millimeter... - Correct Answer neither the decimal
point nor the zero is shown
Where the dimension exceeds a whole number by a decimal fraction of one millimeter...
- Correct Answer the last digit to the right of the decimal point is not followed by a zero
T/F commas and spaces shall be used to separate digits into groups in specifying
millimeter dimensions on drawings - Correct Answer false
T/F A zero is not used before the decimal point for values less than one inch - Correct
Answer true
contour rule or contour dimensioning - Correct Answer each dimension should be
placed in the view where the contour shape is best shown
, T/F Dimensions should appear multiple times in different views on a drawing - Correct
Answer false, they should only apper once
Dimensioning and tolerancing shall be complete so that... - Correct Answer there is full
understanding of the characteristic of each feature
circles are typically dimensioned as - Correct Answer diameters
arcs are dimensioned as - Correct Answer radii
T/F you should give dimensions between holes vs dimensioning the holes from the end
of the part - Correct Answer True
Baseline Dimensioning - Correct Answer all of the dimensions in a given direction
originate from a base or datum (frequently used for CNC machines)
Chain Dimensioning - Correct Answer features are dimensioned relative to one
another (used when a part function requires that features be related to one another)
T/F chain dimensioning is often preferred over baseline - Correct Answer False,
Baseline dimensioning is prefrred
Chain dimensioning usually yields the _______ accumulation of tolerance between
features,where the maximum distance between features is... - Correct Answer largest;
equal to the sum of the intermediate distances
dimension only to _______ or _______ lines - Correct Answer visible; solid
Dimension lines also should be at least _____ ___ from any view, helping to avoid
clutter. - Correct Answer 10 mm
When dimensions are placed outside other dimensions, there should be at least ___
___ between dimension lines - Correct Answer 6 mm
When dimensioning a visible gap of at least ___ ___ should be between extension lines
and object geometry - Correct Answer 1 mm
when dimensioning, extension lines should extend ___-___ ___ past their
corresponding dimension line - Correct Answer 2-3 mm
Chamfersy are dimensioned by - Correct Answer giving a length from the end of the
part and an angle or by specifying two distances
|___| represents what on a drawing? - Correct Answer counterbore
\/ represents what on a drawing? - Correct Answer countersink
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