IET 154 FINAL EXAM questions with
complete solutions
Scale Identifier and Scale Factor - ANS ✔Drawing scales is usually indicated on the TITLE BLOCK,
Scale of the view is indicated on the VIEW LABEL
Parts commonly not sectioned in assembly drawings - ANS ✔Thin walled parts, Standard and
Solid parts with no internal detail are not sectioned (like nuts, bolts, screws, shafts, pins, keys,
bearings, spokes and ribs) Also extremely thin parts such as gaskets and sheet metal parts are
shown solid, rather than sectioned. If it lies along the longitudinal axis of the part, it is NOT
sectioned
Purpose of auxiliary view in mechanical drawings - ANS ✔Auxiliary view is an orthographic view
that is projected onto any plane other than one of the principal planes. PRIMARY auxiliary view
can be used to find the true size and shape of an INCLINED surface, A SECONDARY auxiliary view
can be used to find the true size and shape of an OBLIQUE surface.
Mechanical drawing and dimensioning rules - ANS ✔Dimensioning rules: 1. DO NOT repeat
dimensions, 2. Apply dimensions to a feature in its most descriptive view, 3. Dimension between
views. 4. Omit one(intermediate) dimension, 5. Place smaller dimensions inside of larger
dimensions, 6. Dimension to visible object lines, not to hidden lines, 7. Keep dimensions outside
of the views, 8. Extension lines may cross object lines and other extension lines, 9. Dimension
the diameter of cylindrical parts in their rectangular view, 10. Dimension the diameter of
cylindrical holes in their circular view, 11. Dimension the radius of circular arcs in the view
where their true shape is seen, 12. Avoid overly long extension and leader lines
Mechanical/Working drawing components - ANS ✔DRAWING SCALE, TOLERANCE NOTES,
STANDARD PARTS, BORDERS and ZONES, BOM, TITLE BLOCKS
, ASME standards for drawings including - ANS ✔1. ASME Y14.1-1995 Decimal Inch Drawing
Sheet Size And Format:
2. ASME Y14.2-1992 Line Conventions and Lettering: Line styles, sometimes referred to as
alphabet lines, describe the size spacing, construction, and application of the various lines used
in CAD and manual engineering drawings
3. ASME Y14.5-2009 Dimensioning and Tolerancing: notes refer to any dimensions that have not
been specifically tolerated; found in lower right-hand corner of drawing
4. ASME Y14.35-1997 Revision of Engineering Drawing and Associated Documents
5. ASME Y14.41-2003 Digital Product Definition Practice: Provides standards for the use of
digital data sets as a substitute for working drawings. Supports two alternative methods for the
development of the product definition data: 1) model only in digital format, or 2) MODEL AND
DRAWING IN DIGITAL FORMAT
Standard Sheet Size in English unit - ANS ✔ASME Y14.1-1995, English (Inches), A8.5x11.0,
B11.0x17.0, C17.0x22.0, D22.0x34.0, E34.0x44.0
How the part numbers are typically identified? Method to identify parts - ANS ✔Identified by
the BOM(Bill Of Materials), Balloons are used to identify them
Projection and pictorial views - ANS ✔OBLIQUE-Cavalier, Cabinet, General
Size and shape of features in normal surfaces, inclined surfaces, and oblique surfaces - ANS
✔NORMAL surface appears as a true size surface in one view and on edge in the other two
views. INCLINED appears as foreshortened surface in two views, whereas in the third view the
inclined surface appears on edge. OBLIQUE is inclined to all three principal projection planes, in
none of these is the oblique surface true size
Information included in a typical part drawing, comparison with assembly drawings - ANS
✔Assembly drawing shows how the different components fit together to form the product
complete solutions
Scale Identifier and Scale Factor - ANS ✔Drawing scales is usually indicated on the TITLE BLOCK,
Scale of the view is indicated on the VIEW LABEL
Parts commonly not sectioned in assembly drawings - ANS ✔Thin walled parts, Standard and
Solid parts with no internal detail are not sectioned (like nuts, bolts, screws, shafts, pins, keys,
bearings, spokes and ribs) Also extremely thin parts such as gaskets and sheet metal parts are
shown solid, rather than sectioned. If it lies along the longitudinal axis of the part, it is NOT
sectioned
Purpose of auxiliary view in mechanical drawings - ANS ✔Auxiliary view is an orthographic view
that is projected onto any plane other than one of the principal planes. PRIMARY auxiliary view
can be used to find the true size and shape of an INCLINED surface, A SECONDARY auxiliary view
can be used to find the true size and shape of an OBLIQUE surface.
Mechanical drawing and dimensioning rules - ANS ✔Dimensioning rules: 1. DO NOT repeat
dimensions, 2. Apply dimensions to a feature in its most descriptive view, 3. Dimension between
views. 4. Omit one(intermediate) dimension, 5. Place smaller dimensions inside of larger
dimensions, 6. Dimension to visible object lines, not to hidden lines, 7. Keep dimensions outside
of the views, 8. Extension lines may cross object lines and other extension lines, 9. Dimension
the diameter of cylindrical parts in their rectangular view, 10. Dimension the diameter of
cylindrical holes in their circular view, 11. Dimension the radius of circular arcs in the view
where their true shape is seen, 12. Avoid overly long extension and leader lines
Mechanical/Working drawing components - ANS ✔DRAWING SCALE, TOLERANCE NOTES,
STANDARD PARTS, BORDERS and ZONES, BOM, TITLE BLOCKS
, ASME standards for drawings including - ANS ✔1. ASME Y14.1-1995 Decimal Inch Drawing
Sheet Size And Format:
2. ASME Y14.2-1992 Line Conventions and Lettering: Line styles, sometimes referred to as
alphabet lines, describe the size spacing, construction, and application of the various lines used
in CAD and manual engineering drawings
3. ASME Y14.5-2009 Dimensioning and Tolerancing: notes refer to any dimensions that have not
been specifically tolerated; found in lower right-hand corner of drawing
4. ASME Y14.35-1997 Revision of Engineering Drawing and Associated Documents
5. ASME Y14.41-2003 Digital Product Definition Practice: Provides standards for the use of
digital data sets as a substitute for working drawings. Supports two alternative methods for the
development of the product definition data: 1) model only in digital format, or 2) MODEL AND
DRAWING IN DIGITAL FORMAT
Standard Sheet Size in English unit - ANS ✔ASME Y14.1-1995, English (Inches), A8.5x11.0,
B11.0x17.0, C17.0x22.0, D22.0x34.0, E34.0x44.0
How the part numbers are typically identified? Method to identify parts - ANS ✔Identified by
the BOM(Bill Of Materials), Balloons are used to identify them
Projection and pictorial views - ANS ✔OBLIQUE-Cavalier, Cabinet, General
Size and shape of features in normal surfaces, inclined surfaces, and oblique surfaces - ANS
✔NORMAL surface appears as a true size surface in one view and on edge in the other two
views. INCLINED appears as foreshortened surface in two views, whereas in the third view the
inclined surface appears on edge. OBLIQUE is inclined to all three principal projection planes, in
none of these is the oblique surface true size
Information included in a typical part drawing, comparison with assembly drawings - ANS
✔Assembly drawing shows how the different components fit together to form the product
