Elements 10

During tensile test, which of the following stress-strain curve(s) fits for a glass rod ?
A. a straight line
B. a parabola
C. an irregular curve
D. a sudden break

At what temperature range where ferromagnetic alpha iron exists?
A. below. 723°C
B. 700 - 910°C
C. 1000 - 1440°C
D. above 1539°C

How do you call a body having identical properties all
over ?
A. heterogeneous
B. homogeneous
C. elastic
D. ductile

How is the material described if it recovers its original dimensions when the load is removed?
A. elastic
B. plastic
C. brittle
D. malleable

What is the percentage of carbon in Eutectoid steel?
A. 0.02 %
В. 0.30 %
C. 0.63 %
D. 0.80 %

The presence of sulfur in pig iron makes
A. the casting unsound
B. it brittle
C. it hard
D. it is easy machinable

What is the effect of alloying zinc to copper?
A. increases hardness
B. impart free-machining properties
C. improve hardness and strength
D. increases strength and ductility if added up to 10-30%)

The imperfection in the crystal structure of metal is
A. impurity
B. fracture slip
C. slip
D. dislocation

At what temperature that Gamma iron exist?
A. between 910°C and 1400°C
B. between 1400°C and 1539°C
C. near melting point
D. room temperature

The behavior of metals where in strength of a metal is increased and the ductility is decreased on heating at a relatively low temperature after cold working is called :
A. clustering
B. twinning
C. screw dislocation
D. strain aging

Which of the following statement(s) is correct in
"carbon steel castings"?
A. The percentage carbon is less than 1.7%
B. The percentage carbon is between 1.7% to 2%
C. The percentage for alloying elements is controlled
D. None of these

Aluminum alloys for pressure die casting.
A. must not be free from hot shortness.
B. must have iron as one of the constituents.
C. must possess considerable fluidity.
D. must be light.

Which of the following is maximum in 18-4-1 high speed steel?
A. tungsten
B. chromium
C. argon
D. iron

Super conductors
A. exist at temperature below 10K
B. are the dense metals without voids
C. are non-metallic substance
D. are the purest forms of metals

The melting point of babbitt is approximately
A. 1000°F
B. 650°F
C. 750°F
D. 500°F

Which of the following metals is non-magnetic?
A. Cast Iron
B. Alloy Steel
C. Cast Steel
D. Manganese Steel

Which of the following metals will respond to heat treatment?
A. Cast Iron
B. Wrought Iron
C. Medium Carbon Steel
D. Low Carbon Steel

Which of the following statements is true for the internal stresses existing in a welded connection?
A. Internal stresses are not relieved by heat treatment.
B. Internal stresses are not relieved when weld is peened
C. Internal stresses may be relieved when weld is peened.
D. Internal stresses are relieved by x-ray analysis.

How do you call the ratio of the volumetric stress to volumetric strain?
A. modulus in Shear
B. Stress to Strain ratio
C. Volumetric Ratio
D. Bulk Modulus

Ferrous metals contain a relatively large amount of
A. Manganese.
B. Carbon.
C. Sulfur.
D. Phosporous.

The ability of material or metal to resist being crushed
A. fatigue strength.
B. bending strength.
C. torsional strength.
D. compressive strength

Which of the following is not used to temper steel?
A. oil bath
B. brine/salt bath
C. steam bath
D. water bath

Which of the following is not a kind of cast iron?
A. gray iron
B. white iron
C. malleable iron
D. lead iron

Which of the following metals is non-magnetic ?
A. manganese steel
B. cast steel
C. alloy steel
D. cast iron

A machine used in testing steel generally strike the specimen with an energy from 220 to 265 ft-lb.
A. Izod test
B. Charpy test
C. Rockwell test
D. Test blocks

An iron in which most of the carbon is chemically combined with the iron.
A. cast iron
B. gray iron
C. white cast iron
D. malleable iron

An iron has physical properties closely resembling those of mild steel.
A. malleable cast iron
B. malleable iron
C. white iron
D. gray iron

They are usually the steel or steel casting.
A. mild steel
B. carbon steel
C. fire box steel
D. drop-forge-dies

The cheapest and the most abundant engineering material.
A. aluminum
B. steel
C. cast iron
D. babbitts

An alloy of tin, copper, antimony, or sometimes lead.
A. gold
B. babbitt
C. aluminum
D. cast iron

A corrosion occurs within or adjacent to a crevice formed by contact with another piece of the same or another metal.
A. pitting
B. galvanic
C. erosion
D. crevice

The corrosion of iron or iron-base-alloy.
A. rusting
B. crazing
C. chalking
D. fritting

Steel containing large amounts of mild nickel and chromium.
A. carbon steel
B. stainless steel
C. alloy steel
D. cat steel

The temperature above which the alloy is liquid and will run.
A. melting point
B. flow point
C. pour point
D. liquids

A machine used for the testing of very thin steel or surface layers.
A. Charpy test
B. Izod test
C. Description test
D. Rockwell test

Which of the following heat treatment process is used for casting?
A. Annealing -
B. Tempering
C. Normalizing
D. Nitriding

Is a form of corrosion that develop on a highly localized areas on a metal surfaces.
A. crevice
B. erosion
C. galvanic
D. pitting

The unit of deformation is called
A. torsion
B. strain
C. stress
D. shear

SAE steel that responds to heat treatment.
A. SAE 1060
B. SAE 1117
C. SAE 1030
D. SAE 1020

Which of the following materials to be utilized to reduce cost in the manufacturing of large worm gears?
A. alloyed aluminum
B. bronze rim with cast iron spider
C. cast iron rim with bronze spider
D. all of these

Killed steel is very much associated with
A. manganese
B. sulphur
C. phosphorous
D. silicon

Heating of metal above the critical temperature and then cooling slowly usually in the furnace to reduce the hardness and improve the machinability is called
A. normalizing
B. annealing
C. tempering
D. quenching

Major component of bronze casting is
A. copper
B. manganese
C. zinc
D. lead

Commonly utilized/cheapest shaft material available in the market with carbon content of 0.28 to 0.34 %
A. SAE 4132
B. SAE 4320
C. SAE 1030
D. SAE 4130

Alloy steel known for its resistance to corrosion, abrasion and wear that is usually ideal for mill grinding of ore in cement and concentrator application. It is usually combined with molybdenum to increase the depth hardening.
A. manganese chromium steel
B. chromium-moly steel
C. chorome-nickel-moly steel
D. manganese-moly steel

Major component of bronze casting is
A. Copper
B. manganese
C. zinc
D. lead

What heat treatment process can cast steel materials of high chrome, high manganese, etc. type steel be subjected for the purpose of machining process?
A. annealing
B. tempering
C. normalizing
D. quenching

Cast alloy steel for very high temperature application.
A. manganese-nickel steel casting
B. high chrome steel casting
C. chrome-nickel steel casting
D. high manganese casting

Flexible material used to seal pressurized fluids, normally under dynamic condition.
A. nylon
B. seal
C. teflon
D. packing

It has molybdenum alloy except
A. SAE 43xx
B. SAE 41 xx
C. SAE 8xxx
D. SAE 5xxx

Which of the following elements when large quantity is harmful to the ferrous metal?
A. Sulfur
B. Silicon
C. zinc
D. Aluminum

Which of the following acronyms is not generally use as standard ?
A. ASTM
B. SAE
C. IPS
D. AISI

What is the difference between brass and bronze?
A. Brass is composed of copper and zinc while bronze is compose of copper and tin.
B. Brass is composed of copper and zinc while bronze is basically copper and tin plus non-ferrous alloy such as manganese, aluminum, & chromium.
C. Bronze is reddish in color while brass is a mixture of copper and antimony
D. Bronze is mostly an alloy of copper and tin while brass is a mixture of copper and antimony.

It is a gradual chemical reaction by other substance such that the metal is converted to an oxide or othe compounds.
A. corrosion
B. cheaping
C. rusting
D. weathering

Which of the following is not a structural steel class?
A. low carbon steel
B. stainless steel
C. medium carbon steel
D. tool and die steel

Copper and most of its alloys can be hardened by
A. patenting
B. cold working
C. case hardening
D. soaking

For a high corrosion resistant stainless steel, what minimum chromium content is required ?
A. 8%
В. 4.3%
C. 1.1%
D. 5.8%

Ordinary steel begins to lose strength and elasticity significantly at about —-
°F.
A. 900-1000°F
B. 800-900°F
C. 750-850°F
D. 600-700°F

Most effective alloying element for reducing brittleness of steel at very low temperature.
A. manganese
B. molybdenum
C. silicon
D. nickel

Normal stress relieving temperature for cast steel.
A. 200 to 350°F
B. 400 to 500°F
C. 300 to 400°F
D. 450 to 550°F

The property that characterizes a material ability to be drawn in to a wire.
A. Ductility
B. thermal conductivity
C. tensile strength
D. endurance limit

All are associated with the grade of steel except
A. SAE 43XX
B. SAE 13XX
C. SAE 10XX
D. SAE 74XX

Metal that assists lubrication or lubricant in itself.
A. zinc
B. antimony
C. babbitt
D. lead

All are associated with standard material specified except
A. American Iron and Steel Institute
B. Society of Automotive Engineers
C. Southeast Asia Iron and Steel Institute
D. American Society for Testing Materials

Alloy that improves strength of steel at high temperature application.
A. tungsten
B. molybdenum
C. chromium
D. all of these

A furnace used in melting ferrous metals.
A. annealing furnace
B. tempering furnace
C. induction furnace
D. normalizing furnace

A furnace used in melting non-ferrous metals.
A. cupola furnace
B. crucible furnace
C. induction furnace
D. tempering furnace

Liners are normally made of
A. cast iron
B. alloyed bronze
C. alloyed steel
D. alloyed aluminum

Used as cast condition steel casting with carbon content less than——% C
A. 0.26
B. 0.20
C. 0.15 to 0.18
D. 0.25

The yield strength of a regular yellow brass (65 to 70% Cu, 30 to 35.% Zn) can be increased/ improved
A. cold working
B. tempering
C. chill casting
D. heat treatment

Metals are conductive because
A. the electrons are loosely bound to the nuclei and therefore mobile
B. having characteristic metallic luster
C. they are on the left side of the periodic table
D: they have extra electrons as exhibited by normally possible balance state

What is the common cutting fluids used for cutting metals?
A. water with soda and borax
B. light mineral oil
C. soluble oil
D. all of these

Which of the following is a good stabilizer in stainless steel ?
A. columbium
B. titanium
C. tantalium
D. all of these

The good deoxidizer in steel melting is
A. manganese
B. silicon
C. aluminum
D. all of these

Which does not belong to the group?
A. SAE
B. AISI
C. SEA Il
D. ASTM

What is the SAE specification number of Molybdenum?
A. SAE 2XXX
B. SAE 3XXX
C. SAE 4XXX
D. SAE 5XXX

Which of the following will improve the red hardness of steel?
A. Chromium
B. Cobalt
C. Boron
D. Lead

A metal which has a high electrical conductivity but should not be used for high temperature metal.
A. silicon
B. zinc
C. chrome alloy
D. carbide
B. zinc

The brittleness in steel at elevated temperature is —-
A. hard drawn
B. cold lap
C. red shortness
D. residual stresses

Cold drawing is also called
A. hard drawn
B. oxidized steel
C. cold lap steel
D. strain hardening

Silicon-Manganese stéel designation: SAE
A. 72XX
B. 40ХХ
C. 92XX
D. 9XX
C. 92XX

D. sulfur

Chromium steel (to include heat and corrosion resistant) designation
A. SAE 56XX
B. SAE 514XX
C. SAE 61XX
D. SAE 9XX

Which of the following does not affect the tensile strength of steel?
A. sulfur
B. Cobalt
C. phosphorous
D. boron

The material for engine radiator is usually made of
A. yellow brass
B. silicon brass
C. admiralty brass
D. navy brass

Normally cast iron contains 2% carbon or more and silicon in the range of
%.
A. 1 to 3
B. 2 to 4
C. 2 to 3
D. 1 to 6

The application of electrica current to the corrosion circuit to counter the corrosion reaction is called
A. cathodic protection
B. sacrificial anodes method
C. chemical corrosion process
D. galvanic action

A major component of cast steel is
A. Silicon
B. iron
C. manganese
D. Chromium

Treatment process that produces a residual compressive stress at the surface (which occupy more volume ) and residual tension on the inside that results in considerable increase in fatigue strength for members on torsionending.
A. partial quenching
B. heavy oil quenching
C. quenching
D. shallow quenching

A good general purpose deoxidizer and promotes fine grain in steel.
A. copper
B. magnesium
C. molybdenum
D. silicon

Nickel-Chromium-Molybdenum steel designation.
A. SAE51XX
B. SAE74XX
C. SAE94XX
D. SAE64XX

An interrupted quenching process resulting in an. austenite-to-bainite transition.
A. Austempering
B. Martempering
C. Austenitizing
D. Martenitizing

An interrupted quenching process resulting in an austenite to martensite transition is
A. Normalizing
B. Austenitizing.
C. Martempering
D. Austempering

To improve its machinability, this element is added to
steel.
A. Carbon
B. Sulfur
C. manganese
D. Chromium

Which of the following is the hardening treatment for steels having low carbon content?
A. Nitriding
B. Case hardening
C. Normalizing
D. Anodizing

How do you call to the loss of material from the interface of two metal surfaces that are in intimate contact.?
A. Interfacing
В. Coalescence
C. Wear
D. Fretting corrosion

The general description for mild steel is
A. Medium carbon steel
B. Low carbon steel
C. High carbon steel
D. Hot rolled steel

How do you call the trade name for a patented alloy made up chiefly of cobalt, chromium, and tungsten in varying proportions?
A. Stellite
B. Carboloy
C: Stainless steel
D. Incoloy