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
c. All of the above
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
a. 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
b. 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
c. Fusibility
The ability of a material to resist indention.
a. Brittleness
b. Toughness
c. Hardness
d. All of the above
c. Hardness
The materials that are rust resistant.
a. GI sheets
b. BI sheets
c. All of the above
d. None of the above
a. 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
b. Cold-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
a. Cold-rolled steel shaft
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
b. 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
d. All of the above
Which of the following metals is the strongest?
a. Tool steel
b. Spring steel
c. Stainless steel
d. All of the above
a. Tool steel
The higher the carbon content of the steel, the ___ it becomes.
a. weaker
b. stronger
c. smaller
d. None of the above
b. stronger
The standard length of bars available in hardware.
a. 10 ft
b. 20 ft
c. 30 ft
d. None of the above
b. 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
a. 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
b. 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
a. 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
b. 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
b. 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
a. AISI 1040
ANSI means ____.
a. American National Steel Institute
b. American National Standard Institute
c. American National Steel and Iron
d. None of the above
b. 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
c. 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
a. 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
c. 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
b. 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
d. None of the above
If a metal has ⅛-inch thickness, it is called as ___.
a. strips
b. sheet
c. plate
d. All of the above
c. 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
b. 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
c. 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
b. 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
a. 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
a. thickness
A type of paint most suitable for metals.
a. Latex paint
b. Enamel paint
c. Acrylic paint
d. None of the above
c. 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
d. None of the above
A coating material used to protect metals from rusting.
a. Primer epoxy
b. Red oxide
c. Red lead
d. All of the above
d. All of the above