ENGINEERING MATERIALS Flashcards
Materials used in the fabrication of
agricultural machines.
a. Standard
b. Fabrication
c. All of the above
d. None of the above
AOTA
Materials that are ready to adopt as
component of agricultural machines such as
bearing, belts, pulley, etc.
a. Standard
b. Fabrication
c. All of the above
d. None of the above
STANDARD
Materials that need to be processed
before it can be used as component of
agricultural machines such as bars, sheets,
plates, etc.
a. Standard
b. Fabrication
c. All of the above
d. None of the above
FABRICATION
The property of a material to join
together with other metal at liquid state.
a. Ductility
b. Workability
c. Fusibility
d. None of the above
Fusibility
The ability of a material to resist
indention.
a. Brittleness
b. Toughness
c. Hardness
d. All of the above
HARDNESS
The materials that are rust resistant.
a. GI sheets
b. BI sheets
c. All of the above
d. None of the above
GI SHEETS
The recommended material for the
manufacture of pin sleeves and hitch
pins for walking-type power tillers.
a. Mild steel
b. Cold-rolled steel
c. Spring steel
d. None of the above
COLLED-ROLLED STEEL
A material commonly used as axle
for agricultural machines.
a. Cold-rolled steel shaft
b. Malleable steel round bar
c. Round cast iron
d. None of the above
COLD-ROLLED STEEL SHAFTS
A kind of steel used for making
tractor drawn disk plow bottoms.
a. Tool steel
b. Soft-centered steel
c. Molybdenum steel
d. None of the above
Soft-centered steel
A steel bar used as machine axle is
___.
a. hot-rolled steel
b. cold-rolled steel
c. mild steel
d. None of the above
b. cold-rolled steel
Steel bars commonly used in the
manufacture of agricultural machines.
a. Spring steel
b. Mild steel
c. Cold-rolled steel
d. None of the above
b. Mild steel
What is the rule-of-thumb in the
amperage requirement of a welding rod?
a. 1-in. diameter per 1000 amp
b. 0.001-in. diameter per 1 amp
c. 0.1-in. diameter per 100 amp
d. All of the above
AOTA
Which of the following metals is the
strongest?
a. Tool steel
b. Spring steel
c. Stainless steel
d. All of the above
TOOL STEEL
The higher the carbon content of the
steel, the ___ it becomes.
a. weaker
b. stronger
c. smaller
d. None of the above
STRONGER
The standard length of bars available in
hardware.
a. 10 ft
b. 20 ft
c. 30 ft
d. None of the above
20 FT
When buying angle bars, the right
specification is ___.
a. thickness and width
b. thickness and length
c. width and length
d. All of the above
Thickness and width
The required material designation for
the construction of gear based on PAES
standard.
a. AISI designation 1021
b. AISI designation 1045
c. AISI designation 1080
d. None of the above
AISI designation 1045
Mild steel with 0.15 to 0.23% carbon
content (cold rolled) is designated by
American Iron and Steel Institute as ___.
a. AISI 1021
b. AISI 1080
c. AISI 1045
d. None of the above
AISI 1021
The materials used in the
manufacture of disc plows and disc
blades for harrows.
a. AISI 1020
b. AISI 1080
c. AISI 1045
d. None of the above
AISI 1080
A steel with at least 0.80% carbon is
designated by American Iron and Steel
Institute as ___.
a. AISI 1020
b. AISI 1080
c. AISI 1045
d. None of the above
AISI 1080
Cold-rolled steel shaft with 0.37% to
0.44% carbon content is designated by
American Iron and Steel Institute as ___.
a. AISI 1040
b. AISI 1020
c. AISI 1080
d. None of the above
AISI 1040
ANSI
American National Standard Institute
A material that is resistant to salt
corrosion.
a. Mild steel
b. Cast iron
c. Stainless steel
d. All of the above
Stainless steel
A stainless steel used for food industry.
a. SS series 400
b. SS series 300
c. SS series 200
d. None of the above
SS series 400
A stainless steel used for high temperature applications.
a. SS 104
b. SS 204
c. SS 304
d. None of the above
SS 304
Stainless steel use for architectural
purposes such as for rails for stairways.
a. SS 102
b. SS 202
c. SS 302
d. None of the above
SS 202
The higher the schedule specification of
steel pipes, the lower is its ___.
a. length
b. nominal diameter
c. thickness
d. None of the above
NOTA
If a metal has ⅛-inch thickness, it is
called as ___.
a. strips
b. sheet
c. plate
d. All of the above
PLATE
A material 4-ft wide x 8-ft long with
1/8-in. thick is___.
a. metal sheet
b. metal plate
c. metal strip
d. None of the above
METAL PLATE
A metal sheet with gauge number 14
means___.
a. 14-mm thick
b. 14 pieces of metal sheets in a stock
c. 14 pieces in one-inch thickness
d. None of the above
14 pieces in one-inch thickness
In a 2-inch pile of sheet, gauge-20
metal sheet has ___.
a. 20 sheets
b. 40 sheets
c. 60 sheets
d. None of the above
40 SHEETS
Which of the following metal sheets
is thicker than gauge 20?
a. Gauge 18
b. Gauge 22
c. Gauge 24
d. Two of the above
GAUGE 18
The higher the gauge number of a
metal sheet, the lower the ___.
a. thickness
b. width
c. length
d. None of the above
thickness
A type of paint most suitable for
metals.
a. Latex paint
b. Enamel paint
c. Acrylic paint
d. None of the above
Acrylic paint
Which of the following materials is
used for acrylic paint.
a. Paint thinner
b. Lacquer thinner
c. Primer epoxy
d. None of the above
nota
A coating material used to protect
metals from rusting.
a. Primer epoxy
b. Red oxide
c. Red lead
d. All of the above
aota