NAVY AM MOD 3 MAIN EXAMINATION SET QUESTIONS
AND ANSWERS SURE A+
✔✔Ferrous metal - ✔✔A group of metals having iron as their principal element.
✔✔Society of Automotive Engineers (SAE) first number represents - ✔✔Type of steel
✔✔Society of Automotive Engineers (SAE) second number represents - ✔✔Percentage
of alloying elements
✔✔Society of Automotive Engineers (SAE) third and fourth number represents - ✔✔The
percentage of carbon in hundredths of one percent
✔✔nonferrous metals - ✔✔All metals that have elements other than iron as their
principal element
✔✔Clad Coating - ✔✔Thin layer of pure aluminum that protects the base metal from
corrosion
✔✔aluminum advantages - ✔✔light, easy to form
✔✔aluminum disadvantages - ✔✔Lacks strength in its pure state
✔✔Aluminum Alloys advantages - ✔✔Light, increases strength with added elements
✔✔Aluminum alloy disadvantages - ✔✔Not easy to form with added elements
✔✔Titanium advantages - ✔✔Good corrosion resistance, moderate strength, light
weight, up to 800 f
✔✔Titanium disadvantages - ✔✔Loss of strength, become brittle at high temperatures (
above 800f), expensive.
✔✔Magnesium advantages - ✔✔Very light, good forming characteristics, high strength
to weight ratio
✔✔Magnesium disadvantages - ✔✔Must be formed between 450f and 650f, highly
corrosive, unpredictable fire hazard
✔✔Visible Lines - ✔✔Heavy unbroken lines that indicate the outer edges of an object
✔✔Hidden lines - ✔✔Medium lines with short evenly spaced dashes used to indicate
concealed edges.
, ✔✔Center Line - ✔✔Thin lines made up of alternating long and short dashes, indicates
symmetry
✔✔Dimension lines - ✔✔Thin lines ending with arrows that indicate the measured
distance
✔✔Extension Line - ✔✔Thin unbroken lines, indicates extent of distance
✔✔Leader Line - ✔✔Thin line with arrow on one end, indicates part or dimension.
✔✔Phantom line - ✔✔Medium series of one long dash and two short dashed, indicates
alternate position of parts
✔✔Long-Break Line - ✔✔Thin solid zigzagged lines, used to reduce the size of drawing,
✔✔Short-Break Line - ✔✔Thick solid zigzagged lines, indicates a short break.
✔✔Cutting or viewing plane line - ✔✔Thick solid lines with arrowheads, indicates
direction in which section or plane is viewed.
✔✔Offset cutting plane - ✔✔Same as cutting plane, not symmetrical
✔✔orthographic drawing - ✔✔Two or more views, each showing a complete picture of
the object from that point.
✔✔Auxiliary View - ✔✔Shows the true shape and length of an inclined surface or other
special features.
✔✔Sectional View - ✔✔Clarify internal or hidden features
✔✔Phantom view - ✔✔show alternate position
✔✔Exploded View - ✔✔Shows relative location of parts
✔✔alignment diagrams - ✔✔Used when an alignment check on an aircraft is performed,
to clarify points
✔✔Station diagrams - ✔✔Orthographic views, showing the location of structural
components
✔✔schematic diagram - ✔✔The relation of parts within a system
✔✔Tolerance - ✔✔The greatest permissible error
AND ANSWERS SURE A+
✔✔Ferrous metal - ✔✔A group of metals having iron as their principal element.
✔✔Society of Automotive Engineers (SAE) first number represents - ✔✔Type of steel
✔✔Society of Automotive Engineers (SAE) second number represents - ✔✔Percentage
of alloying elements
✔✔Society of Automotive Engineers (SAE) third and fourth number represents - ✔✔The
percentage of carbon in hundredths of one percent
✔✔nonferrous metals - ✔✔All metals that have elements other than iron as their
principal element
✔✔Clad Coating - ✔✔Thin layer of pure aluminum that protects the base metal from
corrosion
✔✔aluminum advantages - ✔✔light, easy to form
✔✔aluminum disadvantages - ✔✔Lacks strength in its pure state
✔✔Aluminum Alloys advantages - ✔✔Light, increases strength with added elements
✔✔Aluminum alloy disadvantages - ✔✔Not easy to form with added elements
✔✔Titanium advantages - ✔✔Good corrosion resistance, moderate strength, light
weight, up to 800 f
✔✔Titanium disadvantages - ✔✔Loss of strength, become brittle at high temperatures (
above 800f), expensive.
✔✔Magnesium advantages - ✔✔Very light, good forming characteristics, high strength
to weight ratio
✔✔Magnesium disadvantages - ✔✔Must be formed between 450f and 650f, highly
corrosive, unpredictable fire hazard
✔✔Visible Lines - ✔✔Heavy unbroken lines that indicate the outer edges of an object
✔✔Hidden lines - ✔✔Medium lines with short evenly spaced dashes used to indicate
concealed edges.
, ✔✔Center Line - ✔✔Thin lines made up of alternating long and short dashes, indicates
symmetry
✔✔Dimension lines - ✔✔Thin lines ending with arrows that indicate the measured
distance
✔✔Extension Line - ✔✔Thin unbroken lines, indicates extent of distance
✔✔Leader Line - ✔✔Thin line with arrow on one end, indicates part or dimension.
✔✔Phantom line - ✔✔Medium series of one long dash and two short dashed, indicates
alternate position of parts
✔✔Long-Break Line - ✔✔Thin solid zigzagged lines, used to reduce the size of drawing,
✔✔Short-Break Line - ✔✔Thick solid zigzagged lines, indicates a short break.
✔✔Cutting or viewing plane line - ✔✔Thick solid lines with arrowheads, indicates
direction in which section or plane is viewed.
✔✔Offset cutting plane - ✔✔Same as cutting plane, not symmetrical
✔✔orthographic drawing - ✔✔Two or more views, each showing a complete picture of
the object from that point.
✔✔Auxiliary View - ✔✔Shows the true shape and length of an inclined surface or other
special features.
✔✔Sectional View - ✔✔Clarify internal or hidden features
✔✔Phantom view - ✔✔show alternate position
✔✔Exploded View - ✔✔Shows relative location of parts
✔✔alignment diagrams - ✔✔Used when an alignment check on an aircraft is performed,
to clarify points
✔✔Station diagrams - ✔✔Orthographic views, showing the location of structural
components
✔✔schematic diagram - ✔✔The relation of parts within a system
✔✔Tolerance - ✔✔The greatest permissible error
