Elements 9

Heating above the transformation range, usually 1300°F to 1350°F, and cooling slowly to soften the metal and increase in machining.
A. Annealing
B. Hardening
C. Normalizing
D. Tempering

Heating above the transformation temperature and quenching usually in oil, for the purpose of increasing the hardness.
A. Annealing
B. Hardening
C. Normalizing
D. Tempering

Reheating to a temperature below the transformation range, followed by any desired rate of cooling to attain the desired properties of the metal.
A. Annealing
B. Hardening
C. Tempering
D. Stress Relieving

Heating to a subcritical temperature, about 1, 100F to 1,300°F and holding at that temperature for a suitable time for the purpose of reducing internal residual
stresses.
A. Annealing
B. Hardening
C. Tempering
D. Stress Relieving

Heating to some 100°F above the transformation range with subsequent cooling to below that range in still air at room temperature to produce uniform structure of the metal
A. Annealing
B. Hardening
C. Normalizing
D. Tempering

An alloy of copper and tin.
A. brass
B. bronze
C. Iron
D. Tin

A manganese steel containing approximately 0.20% carbon.
A. SAE 1320
B. SAE 1230
C. SAE 2340
D. SAE 4230

The ability of metal to be deformed considerably without rupture.
A. ductility
B. plasticity
C. malleability
D. elasticity

The uniform heating of steel above the usual hardening temperatures, followed by cooling freely in air.
A. annealing
B. normalizing
C. hardening
D. tempering

A material that can wear away a substance softer than itself.
A. phenol
B. abrasive
C. tungsten
D. chromium

The operation of cooling a heated piece of work rapidly by dipping it in water, brine or oil.
A. quenching
B. tempering
C. normalizing
D. annealing

A method used in softening a piece of metal that is too hard to machine and is done by heating steel slowly above the usual hardening temperature, keeping it at the heat for ½ to 2 hours, then cooling slowly, preferably in a furnace.
A. broaching
B. quenching
C. normalizing
D. annealing

The process of checking or producing checkers on the into the surface.
surface of a piece by rolling checkered depressions
A. knurling
B. hemming
C. breading
D. 'embossing

The process of heating a piece of steel to a temperature within or above critical range and cooling rapidly.
A. normalizing
B. hardening
C. annealing
D. tempering

Galvanized iron is a term referring to iron coated with:
A. tin
B. zinc
C. magnesium
D. aluminum

The material used in high speed processes.
A. high speed steel
B. chromium
C. cast iron
D. carbon steel

An alloy of copper, tin and small amount of phosphorous.
A. chromium
B. bronze
C. brass
D. aluminum

The minimum thickness of steel members exposed to weather and accessible for painting is —
A. 6 mm
B. 8 mm
C. 4 mm
D. 10 mm

The common deoxidizer and cleanser of steel, forming oxides and sulfates, that are carried off in the slag.
A. Manganese
B. Carbon
C. Tungsten
D. Sulfur

A highly transparent and exceedingly hard crystalline stone of almost pure carbon.
A. gold
B. diamond
C. bronze
D. crystalline

A fine grained, salty silica rock used for sharpening edge tools.
A. Eutectoid
B. Austenite
C. Oilstone -
D. Pearlite

An amorphous solid made by fusing silica with a basic oxide.
A. pearlite
B. rock
C. silicon
D. glass

A soft yellow metal, known since ancient times, a precious metal which all material values are based is known as
A. solidus
B. bronze
C. gold
D. Austenite

A device used to prevent leakage of media.
A. Seal
B. Packings
C. teflon
D. graphite

The softening of metals by heat treatment and most commonly consists of heating the metals up to near molten state and then cooling them very slowly.
A. quenching
B. tempering
C. annealing
D. forming

Flexible material used to seal pressurized fluids, normally under dynamic conditions.
A. packings
B. Teflon
C. seals
D. safety shield

Which of the following is not a classification of iron ore?
A. hematite
B. magnetite
C. sulfurite
D. siderite

Which of the following metals will respond to heat treatment ?
A. cast iron
B. medium carbon steel
C. wrought iron
D. low carbon steel

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

Materials, usually ceramics, employed where resistance to very high temperature is required, as for furnace linings and metal melting pots.
A. Refractories
B. gaskets
C. insulators
D. safety shield

Any material that retard the flow of electricity used to prevent passage or escape of electric current from
conductors.
A. Insulators
B. bricks
C. ceramics
D. refractories

A metallic element and the only metal that is liquid at ordinary temperature.
A. Austinite
B. Mercury
C. Manganese
D. Martensite

An alloy of copper and zinc.
A. aluminum
B. bronze
C. brass
D. Nickel

Which of following is not a classification of iron ore?
A. hematite
B. magnetite
C. sulfurite
D. siderite

Of the following metals, which will respond to heat treatment?
A. cast iron
B. wrought iron
C. medium iron
D. low carbon iron

The process of working metals by the application of sudden blows or by a steady pressure.
A. rolling
B. forging
C. casting
D. turning

The maximum stress to which a material can be subjected without a trace of any permanent set remaining upon a complete withdrawal of the stress.
A. ultimate stress
B. rupture stress
C. elastic limit
D. proportional limit

A total deformation measured in the direction of the line of stress.
A. stress
B. strain
C. endurance limit
D. Poisson's ratio

The ability of material or metal to resist being crushed
A. Compressive strength
B. Fatigue strength
C. Torsional strength
D. Bending strength

Which of the following metals is easy to chisel?
A. alloy steel
B. stainless steel
C. manganese steel
D. cast iron steel

Ferrous metals contain relatively large amount of :
A. Carbon
B. manganese
C. phosphorous
D. sulfur

Any material that retard the flow of electricity, used to prevent passage or escape of electric current from
conductors.
A. refractory
B. ceramics
C. coating material
D. insulator

An alloying element used principally to produce stainless steel.
A. aluminum
B. brass
C. bronze
D. chromium

The principal material used in high production metal working tools.
A. hyper-eutectoid
B. high speed steel
C. lead
D. high speed carbon

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

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

Which does not belong to the group?
A. resistance welding
B. soldering
C. hardening
D. brazing

The mass of the body per unit volume.
A. volume flow rate
B. density
C. weight
D. Mass

Subjecting a substance to a high temperature below the fusion point, usually to make it friable.
A. calcinations
B. fusion
C. boiling
D. superheating

A special metal formed when two or more metals are melted together.
A. monel
B. alloy
C. solder
D. "hastalloy

Hardening the surface of iron-based alloys by heating them below the melting point in contact with a carbonaceous substance.
A. carburizing
В. normalizing
C. martempering
D. hardening

A device used to prevent leakage of media.
A. packing
B. safety shield
C. gasket
D. seals

The ability of metal to stretch, bend or twist without breaking or cracking.
A. elasticity
B. ductility
C. brittleness
D. plasticity

The property of steel which resist indention or penetration.
A. hardness
B. elasticity
C. ductility
D. none of these

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

of the paloriahsachine members, the damping capaciy
of the material should be
A. zero
B. high
C. low
D. anything

For a high corrosion resistant stainless steel, what minimum chromium content is required?
А. 8.0%
В. 4.5%
C. 1.5%
D. 8.5%

At quite low temperatures (say - 75°C), the notched bar impact value of steel
A. increases significantly
B. decreases significantly
C. remains unchanged
D. depends on heat treatment

Muntz metal contains
A. copper-aluminum
B. copper-tin
C. copper-nickel
D. copper-zinc

Steel balls for ball bearings are manufactured by
A. cold heading
B. casting
C. rolling
D. turning

In general, alloys with high nickel content retain toughness to quite low temperature up to —
A. -250°F
B. -360°F
C. -320°F
D. -240°F

Manganese steel standard designation is SAE
A: 8XXX
B. 10ХХ
C. 12XX
D. 13XX

A babbit is
A. a eutectic of iron and iron phosphide
B. a gadget for measuring volume
C. a measure of magnetic induction produces in a material
D. ahtimony bearing lead or tin alloy

In powder metallurgy the process of heating the cold pressed metal powder is called
A. deposition
B. granulation
C. sintering
D. precipitation

Which one is different from the remaining?
A. nitriding
B. cyaniding
C. electroplating
D. flame hardening

Delta iron occurs at temperature of
A. room temperature
B. above melting point
C. between 1400°C &1539°C
D. between 1000°C & 1400°C

The most important element that controls the physical properties of steel is
A. Carbon
B. silicon
C. manganese
D. tungsten

Select the one that has highest specific gravity?
A. aluminum
B. lead
C. brass
D. high carbon steel

Age-hardening is related with
A. cast iron
B. stainless steel
C. duralumin
D. german silver

Choose the one that will have highest cutting speed
A. Aluminum
B. brass
C. bronze
D. cast iron

Least shrinkage allowance is provided in the case of which of the following
A. cast iron
B. aluminum
C. white cast iron
D. brass

Diating sand used to find out which property of
molding sand.
A. permeability
B. hot strength
C. fineness
D. moisture content

Hastelloy contains
A. copper
B. nickel and copper
C. copper and aluminum
D. nickel and molybdenum

The maximum hardenability of any steel depends on
A. the carbon content
B. the chemical composition
C. the grain size
D. the alloying elements present

The hardness of steel increases if it contains.
A. martensite
B. pearlite
C. austenite
D. all of these

How do you call a steel with 0.8% carbon and 100%
pearlite?
A. Austenite
B. Solidus
C. Hyper-eutectoid
D. Eutectoid

What is the range of the tensile strength of common varieties of cast iron?
A. 40-60 Mpa
B. 150-180 Mpa
C. 140-500 Mpa
D. 1500-1650 Mpa

Fatigue failure occurs when a part is subjected to_
A. compressive stress
B. tensile stress
C. torsional stress
D. fluctuating stress

Paramagnetic alpha iron changes to gamma iron at
-what temperature?
A. 440°C
B. 910°C
C. 970°C
D. 1639°C

Which of the following could be the effect of cold working?
A. increases the fatigue strength
B. decreases the fatigue strength
C. has no influence on fatigue strength
D. none of these

In testing a material for endurance strength, it is subjected to
A. completely reversed load
B. static load
C. impact load
D. dynamic load

Coaxing is the procedure of increasing.
A. metal strength.
B. metal hardness by surface treatment.
C. metal resistance to corrosion by coating.
D. fatigue limit by overstressing the metal by successively increasing loadings.

Coaxing is the procedure of increasing.
A. metal strength.
B. metal hardness by surface treatment.
C. metal resistance to corrosion by coating.
D. fatigue limit by overstressing the metal by successively increasing loadings.

The mold for casting ferrous materials in continuous casting process is made of what material?
A. copper
B. medium carbon steel
C. high carbon steel
D. low carbon steel

Piston compression rings are made of what material?
A. steel
B. bronze
C. aluminum
D. cast iron

If the first digit in AISl and SAE designations is one
(1), then, it indicates what?
A. Carbon Steels
B. Nickel Steels
C. Molybdenum Steels
D. Chromium Steels

It is the ability of a material to absorb energy when deformed elastically and to return it when unloaded.
A. creep
B. fatigue strength
C. resilience
D. toughness

Why are Plasticizers added to plastics?
A. To increase flexibility of materials
B. To enhance cross linking
C. To increase ductility of materials
D. To increase melting point

—- is polymer of chloroprene of the monovinyl
acetylene type.
A. Butadine Styrene
B. Butyl
C. Natural rubber
D. Neoprene

In the normalizing process, steel components are cooled
A. by quenching in water
B. by leaving them in the dying furnace
C. by exposing them in still air
D. by exposing them to ammonia gas

How do you call compounds with the same chemical formulas but different physical structures ?
A. isomers
B. polystyrene
C. isotopes
D. polymorphs

What is the purpose of recrystallization of metals ?
A. To increase hardness and ductility.
B. To increase the amount of alloying ingredient absorbed by the solid mixture.
C. To relieve stresses induced during cold working.
D. To reduce the temperature of the mixture below the eutectic line.

How do you call the temperature below which a steel alloy becomes magnetic ?
A. Triple point
B. Transition point
C. Curie point
D. Red hot point

Which of the following is the main constituent of glass?
A. aluminum oxide
B. beryllium oxide
C. manganes oxide
D. calcium oxide

qWhich of the following is a free cutting corrosion resistant alloy that is used for automatic screw machine products such as bolts, screws and precision parts?
A. K Monel
B. KR Monel
C. R Monel
D. S Monel

Low carbon steels are characterized by a carbon content not exceeding
А. 0.30 %
В. 0.80 %
C. 0.50 %
D. 0.60 %

Inconel means
A. Nickel-chromium alloys
B. Nickel-Copper Alloy
C. Nickel-molybdenum Alloys
D. All of these

It is used in clutch disks, pump rods, shaft, valve stems, welding rod.
A. Manganese Bronze
B. Yellow Brass
C. Monel
D. Admiralty Brass

A cold chisel is made of what?
A.. mild steel
B. German Silver
C. High Carbon Steel
D. Cast iron

When steel is coated with —- occurs.
sacrificial protection
А. ероху
B. nickel
C. tin
D. zinc