MAE 1351 FINAL EXAM STUDY GUIDE
QUESTIONS AND ANSWERS VERIFIED 100%
CORRECT
LC - Locational Clearance Fit - ANSWER -Fits that are intended for parts that are
normally stationary but can be freely assembled or disassembled. Range from snug
fits for parts requiring accuracy of location to medium clearance fits.
LT- Locational transition Fit - ANSWER -These fits are intended where accuracy
of location is important but a small amount of clearance or interferences are
permissible.
LN Locational Interference Fit - ANSWER -These fits are intended where
accuracy of location is of prime importance and where parts require rigidity and
alignment with no special requirement for bore pressure.
FN - Force or Shrink Fit - ANSWER -These types of interference fits are usually
characterized by maintenance of constant bore pressures throughout the range of
sizes.
Loose Running Fit - ANSWER -These fits are wide commercial tolerances or
allowances on external members.
Free Running Fit - ANSWER -These fits are not for use where accuracy is
essential, but are good for large temperature variations, high running speeds, and
heavy journal pressures.
Close Running Fit - ANSWER -These fits are for running on accurate machines
and for ensuring accurate location at moderate speeds and journal pressures.
Sliding Fit - ANSWER -These fits are not intended to run freely, but are intended
to move and turn freely and locate accurately.
, Locational Clearance Fits - ANSWER -These fits provide a snug fit for locating
stationary parts; they can be freely assembled and disassembled.
Locational Transition Fit - ANSWER -These fits provide for accurate location and
a compromise between clearance and interference.
Locational Interference Fit - ANSWER -These fits are for parts requiring rigidity
and alignment with prime accuracy of location but without special bore pressure
requirements.
Medium Drive Fit - ANSWER -These fits are for ordinary steel parts or shrink fits
on light sections—the tightest fit usable with cast iron.
Force Fit - ANSWER -These fits are suitable for parts that can be highly stressed
or for shrink fits where the heavy pressure forces required are impractical.
Geometric Dimension and Tolerancing (GD&T) - ANSWER -The system allows
the designer to clearly specify design intent.
There is better communication throughout the design process.
The system is set up so that almost nothing can be interpreted in more than one
way.
A datum reference frame to immobilize and orient the part
Specific form, orientation, and location tolerances that describe 2D and 3D
tolerance zones within which all part geometry must fall.
Datum Reference Frame - ANSWER -Theoretical system made up of three
mutually perpendicular planes, or datums, established by real features on the
object.
2 Things You Need to Keep in Mind with GD&T - ANSWER -The imaginary or
theoretical coordinate system and perfect part geometry that exists within the CAD
software, CNC manufacturing software, or inspection software.
The real features on the finished object.
QUESTIONS AND ANSWERS VERIFIED 100%
CORRECT
LC - Locational Clearance Fit - ANSWER -Fits that are intended for parts that are
normally stationary but can be freely assembled or disassembled. Range from snug
fits for parts requiring accuracy of location to medium clearance fits.
LT- Locational transition Fit - ANSWER -These fits are intended where accuracy
of location is important but a small amount of clearance or interferences are
permissible.
LN Locational Interference Fit - ANSWER -These fits are intended where
accuracy of location is of prime importance and where parts require rigidity and
alignment with no special requirement for bore pressure.
FN - Force or Shrink Fit - ANSWER -These types of interference fits are usually
characterized by maintenance of constant bore pressures throughout the range of
sizes.
Loose Running Fit - ANSWER -These fits are wide commercial tolerances or
allowances on external members.
Free Running Fit - ANSWER -These fits are not for use where accuracy is
essential, but are good for large temperature variations, high running speeds, and
heavy journal pressures.
Close Running Fit - ANSWER -These fits are for running on accurate machines
and for ensuring accurate location at moderate speeds and journal pressures.
Sliding Fit - ANSWER -These fits are not intended to run freely, but are intended
to move and turn freely and locate accurately.
, Locational Clearance Fits - ANSWER -These fits provide a snug fit for locating
stationary parts; they can be freely assembled and disassembled.
Locational Transition Fit - ANSWER -These fits provide for accurate location and
a compromise between clearance and interference.
Locational Interference Fit - ANSWER -These fits are for parts requiring rigidity
and alignment with prime accuracy of location but without special bore pressure
requirements.
Medium Drive Fit - ANSWER -These fits are for ordinary steel parts or shrink fits
on light sections—the tightest fit usable with cast iron.
Force Fit - ANSWER -These fits are suitable for parts that can be highly stressed
or for shrink fits where the heavy pressure forces required are impractical.
Geometric Dimension and Tolerancing (GD&T) - ANSWER -The system allows
the designer to clearly specify design intent.
There is better communication throughout the design process.
The system is set up so that almost nothing can be interpreted in more than one
way.
A datum reference frame to immobilize and orient the part
Specific form, orientation, and location tolerances that describe 2D and 3D
tolerance zones within which all part geometry must fall.
Datum Reference Frame - ANSWER -Theoretical system made up of three
mutually perpendicular planes, or datums, established by real features on the
object.
2 Things You Need to Keep in Mind with GD&T - ANSWER -The imaginary or
theoretical coordinate system and perfect part geometry that exists within the CAD
software, CNC manufacturing software, or inspection software.
The real features on the finished object.
