PLTW IED ACTUAL QUESTIONS AND
CORRECT ANSWERS COMPLETE
ENGINEERING STUDY GUIDE
●● Allowance
Answer: the tightest possible fit between two mating parts
●● American National Standards Institute (ANSI)
Answer: A private, non-profit organization that coordinates the
development and use of a voluntary consensus standards in the United
States.
●● American Society of Mechanical Engineers (ASME)
Answer: A professional engineering organization that is known for
setting codes and standards for mechanical devices in the United States.
●● Audience Analysis
Answer: The understanding of the consumer group for which the design
is targeted. This would include the audiences, demographics, physical
location, amount of time available to view the design, and interest in the
subject matter.
●● Auxiliary View
,Answer: A view that is used to show features that are located on an
inclined surface in true size and shape.
●● Baseline Dimensioning
Answer: System of dimensioning in which all dimensions are placed
from a datum and not from feature to feature
●● Balloon
Answer: A circle with a single number connected to an assembly
component with a leader line to refer to parts.
●● Bilateral Tolerance
Answer: A tolerance in which variation is permitted in both directions
from the specified dimension.
●● Blind Hole
Answer: A hole that does not go completely through the workpiece.
●● Broken-Out Section
Answer: A section of an object broken away to reveal an interior feature
for a sectional drawing.
●● Chain Dimensioning
,Answer: Also known as point-to-point dimensioning where dimensions
are established from one point to the next.
●● Clearance Fit
Answer: limit the size of mating parts so that a clearance always results
when mating parts are assembled
●● Counterbore
Answer: A cylindrical recess around a hole, usually to receive a bolt
head or nut.
●● Countersink
Answer: A conical-shaped recess around a hole, often used to receive a
tapered screw.
●● Cutting Plane Line
Answer: a line drawn on a view where a cut was made in order to define
the location of the imaginary section plane.
●● Datum
Answer: A theoretically exact point, axis, or plane derived from the true
geometric counterpart of a specific datum feature. The origin from
which the location, or geometric characteristic of a part feature, is
established.
, ●● Datum Dimensioning
Answer: A dimensioning system where each dimension originates from a
common surface, plane, or axis. Also known as baseline dimensioning.
●● Decision Matrix
Answer: A tool used to compare design solutions against one another,
using specific criteria.
●● Detail Drawing
Answer: A dimensioned, working drawing of a single part. Also referred
to as part drawing.
●● Detail View
Answer: A view that is used to show a magnified view of features that
are too small to adequately specify in another view.
●● Dual Dimensions
Answer: Where alternate units are displayed within the same dimension.
●● Fillet
Answer: A curved surface formed at the interior intersection of two or
more surfaces of an object. An inside radius between two intersecting
planes
CORRECT ANSWERS COMPLETE
ENGINEERING STUDY GUIDE
●● Allowance
Answer: the tightest possible fit between two mating parts
●● American National Standards Institute (ANSI)
Answer: A private, non-profit organization that coordinates the
development and use of a voluntary consensus standards in the United
States.
●● American Society of Mechanical Engineers (ASME)
Answer: A professional engineering organization that is known for
setting codes and standards for mechanical devices in the United States.
●● Audience Analysis
Answer: The understanding of the consumer group for which the design
is targeted. This would include the audiences, demographics, physical
location, amount of time available to view the design, and interest in the
subject matter.
●● Auxiliary View
,Answer: A view that is used to show features that are located on an
inclined surface in true size and shape.
●● Baseline Dimensioning
Answer: System of dimensioning in which all dimensions are placed
from a datum and not from feature to feature
●● Balloon
Answer: A circle with a single number connected to an assembly
component with a leader line to refer to parts.
●● Bilateral Tolerance
Answer: A tolerance in which variation is permitted in both directions
from the specified dimension.
●● Blind Hole
Answer: A hole that does not go completely through the workpiece.
●● Broken-Out Section
Answer: A section of an object broken away to reveal an interior feature
for a sectional drawing.
●● Chain Dimensioning
,Answer: Also known as point-to-point dimensioning where dimensions
are established from one point to the next.
●● Clearance Fit
Answer: limit the size of mating parts so that a clearance always results
when mating parts are assembled
●● Counterbore
Answer: A cylindrical recess around a hole, usually to receive a bolt
head or nut.
●● Countersink
Answer: A conical-shaped recess around a hole, often used to receive a
tapered screw.
●● Cutting Plane Line
Answer: a line drawn on a view where a cut was made in order to define
the location of the imaginary section plane.
●● Datum
Answer: A theoretically exact point, axis, or plane derived from the true
geometric counterpart of a specific datum feature. The origin from
which the location, or geometric characteristic of a part feature, is
established.
, ●● Datum Dimensioning
Answer: A dimensioning system where each dimension originates from a
common surface, plane, or axis. Also known as baseline dimensioning.
●● Decision Matrix
Answer: A tool used to compare design solutions against one another,
using specific criteria.
●● Detail Drawing
Answer: A dimensioned, working drawing of a single part. Also referred
to as part drawing.
●● Detail View
Answer: A view that is used to show a magnified view of features that
are too small to adequately specify in another view.
●● Dual Dimensions
Answer: Where alternate units are displayed within the same dimension.
●● Fillet
Answer: A curved surface formed at the interior intersection of two or
more surfaces of an object. An inside radius between two intersecting
planes
