Elements 11

A carbon content in the range of —- in steel readily responds to heat treatment.
A. 0.35 to 0.40 %C
B. 0.28 to 0.30%C
C. 0.18 to 0.25%C
D. 0.12 to 0.15%C

A research agency handling assistance to all foundry, machine shop and metallurgical plant operation.
A. MIRDC
B. BOI
C. DOST
D. all of these

For ordinary steel, the modulus of elasticity usually falls between —- million pounds.
A. 20 to 31
B. 35 to 45
C. 20 to 35
D. 25 to 30

It is the phenomenon occurring when two touching surfaces have a high contact pressure and when these surfaces have minute relative motion.
A. helical spring wire
B. stainless steel
C. hard drawn wire spring
D. copper

It is a low cost spring material, suitable where service is not severe and dimensional precision is not needed.
A. helical spring wire
B. stainless steel
C. hard drawn wire spring
D. copper

What is the hard drawn (80 %reduction) spring wire made of high carbon steel?
A. oil tempered wire
B. music wire
C. tension wire
D. chromium wire

Which of the following wires with good quality and is used for impact loading.
A. Hard drawn wire
B. Cold drawn wire
C. • Helical spring wire
D. Chromium - Silicon wire

When heat-treated wire is coiled cold, it should be stress relieved for bending stress and after cooling it is heated at some —-
A. 400°F
B. 600°F
C. 700°C
D. 500°F

For wrought steel in its commonly met commercial forms, it is often assumed that the average endurance limit for an average Su (50 % survival) with the Brinell Hardness is limited to
A. 500
B. 400
C. 240
D. 450

What is the range of the endurance ratio or Czaud quotes values for steel?
А. 0.23 to 0.65
B. 0.34 to 0.87
C. 0.63 to 0.93
D. 0.34 to 0.45

For non-metallic gaskets, it has been found that they should have a certain minimum amount of compression as —- for a certain cork gasket.
А. 62 %
B. 86 %
C. 68 %
D. 76 %

It is the process that cold works a limited amount of material, thus giving a higher strength, and it leaves a surface compressive stress.
A. surface finishing
B. tensioning
C. surfacing
D. surface rolling

At higher temperatures, oil oxidizes more rapidly above —-
A. 120°F
B. 200°F
C. 140°F
D. 160°F

If the ends are joined by wire lacing with machine, the usual efficiency of joint is
A. 100 %
В. 75 %
C. 85 %
D. 88 %

It is a chromium steel tape in AISI-SAE designation.
A. 10XX
B. 25XX
C. 50XX
D. 40XX

It imparts the ductility, toughness, and plasticity of steel.
А. Annealing
B. Materializing
C. Quenching
D. Tempering

This is an alloy in bronze casting that assists lubrication and in itself a lubricant.
A. Lead
B. Manganese
C. Phosphorous
D. Tin

All stainless steel type is SAE designation except
A. 92 XX
B. 300XX
С. 304 ХX
D. 515 XX

It is white metal with good oxidation and corrosion resistance. This has also good electrical magnetic properties.
A. Aluminum
B. Copper
C. Nickel
D. Titanium

It is a molybdenum steel-tape in AISI-SAE designation.
A. 44 XX
B. 45 XX
C. 50 XX
D. 51 XX

It is abundantly used worldwide as coating on top of the plate of automobiles
A. Babbitt
B. Lead
C. Manganese
D. Tin

It is a steel with SAE specification 13XX.
A. Chromium
B. Manganese
C. Molybdenum
D. Nickel

The most known lubricants being utilized in whatever category of load and speed are oil, air, grease and dry lubricants like —-
A. Bronze
B. Graphite
C. Lead
D. Silicon

Ability of a material to absorb strain energy and will return to its original state.
A. Creep
B. Fatigue strength
C. Hardness
D. Resilience

Which type of hardening will work to some extent in all metals?
A. Annealing
B. Austenitizing
C. Martempering
D. Work hardening

What do impact tests determine?.
A. Creep strength
B. Hardness
C. Toughness
D. Yield strength

Constantan is an alloy of
A. Copper and aluminum
B. Nickel and chromium
C. Aluminum and nickel
D. Copper and nickel

What is the carbon content range of SAE 4140 chrome-moly steel after heat treatment?
А. 0.30/0.45
B. 0.38/0.43
C. 0.38/0.45
D. 0.30/0.50

SAE 51XXX belongs to the
A. carbon
B. chromium
C. manganese
D. nickel

Which of the following gasket material which should avoid hot liquid/steam applications?
A. Asbestos fiber
B. Nylon fiber
C. Rubberized
D. Wool

Which of the following that describes the same material properties all over/ direction and at any particular point in a structural member?
A. heterogenous
B. homogenous
C. isentropic
D. isotropic

A white metal, almost as bright as silver and is malleable and ductile and can be welded.
A. Nickel
B. Aluminum
C. White Iron
D. Lead

It is a silvery dull, soft metal and the second lightest of all metals used in the industry.
A. Nickel
В. Aluminum
C. White Iron
D. Lead

The least among iron ores for it contains many impurities, poor in iron content and commonly used in England.
A. Hematite
B. Magnetite
C. Limonite
D. Siderite

Which of the following is not considered to be precious
A. silver
В. gold
C. platinum
D. steel

It is an alloy of copper and zinc. It is approximately 1/3 zinc and 2/3 copper.
A. brass
B. bronze
C. muntz metal
D. silver

It is a copper tin alloy and is named either bell metal or brown metal.
A. brass
B. bronze
C. muntz metal
D. silver

It is a furnace that converts pig iron into steel by Oxidizing out the surplus carbon and using oxygen by throwing raw iron ore into the furnace.
A. Open-hearth furnace
B. Electric furnace
C. Cupola
D. Bessemer

Which of the following has low coefficient of expansion corrosion resistant, weak in strength, and used for nonferrous applications as an alloying element?
A. Aluminum
B. Aluminum oxide
C. Copper oxide
D. Copper

Which of the following materials having thermal expansion of about 10 times higher than those of metals and has more heat generated during machining?
A. Aluminum
B. Asbestos
C. Plastic
D. PVC

To avoid scoring in the bearing surface and the shaft due to contamination/absorption of the fine dirt in the bearing during operation/lubrication the bearing matens to apply should have good —-
properties.
A. anti-scoring
B. corrosion resistance conformability
C. corrosion resistance
D. embeddability

What do impact tests measure?
А. Compactness
B. Ductility
C. Plasticity
D. Toughness

Which of the following gasket material is not used for high temperature?
A. Asbestos
B. Plastic nylon
C. Rubberized
D. Wool

Which of the following is the specification of molybdenum alloy?
A. SAE 3XXX
B. SAE 4XXX
C. SAE 5XXX
D. SAE 6XXX

Which of the following is abundant for ferrous metals?
A. Sulfur
B. Phosporous
C. Manganese
D. Carbon

All of these are classifications of iron ore; except of what?
A. magnetite
B. hematite
C. siderite
D. sulfurite

A steel of carbon range of 0.05 to 0.3 percent is considered as what type of steel?
A. low carbon steel
B. high carbon steel
C. medium carbon steel
D. very high carbon steel

A steel of carbon range of 0.30 to 0.45 percent is considered as what type of steel?
A. low carbon steel
B. high carbon steel
C. medium carbon steel
D. alloyed steel

A steel of carbon range of 0.45 to 0.75 percent is considered as what type of steel?
A. low carbon steel
B. high carbon steel
C. medium carbon steel
D. alloyed steel

A steel of carbon range of 0.75 to 1.7 percent is considered as what type of steel?
A. low carbon steel
B. high carbon steel
C. medium carbon steel
D. very high carbon steel

Which of the following alloying elements of steel will tend to increase its strength without decreasing its toughness or ductility and with its large quantities the steel become tough but develop high resistance to corrosion and shock?
A. chromium
B. manganese
C. molybdenum
D. Nickel

Which of the following alloying elements of steel will produce the greatest hardening effect like carbon and at the same time reduces the enlargement of its grain structure.
A. chromium
B. manganese
C. molybdenum
D. nickel

Which of the following alloying elements of steel will produce fine grain structure and promotes greater toughness and ductility?
A. chromium
B. manganese
C. molybdenum
D. nickel

Which of the following alloying elements of steel which makes it extremely hard and resistance to wear without making it brittle?
A. chromium
B. manganese
C. molybdenum
D. nickel

It is the element used mostly in steels designed for metal cutting tools. The steels added by this element are tough, hard and very resistant to wear.
A. chromium
B. tungsten
C. molybdenum
D. nickel

It is the element whose chief function is to strengthen the ferrite. It is used with tungsten to develop red hardness or the ability to remain hard when red hot.
А. chromium
B. cobalt
C. molybdenum
D. nickel

It is also known as strain drawing. It is the process whereby certain degree of hardness is sacrificed in order to reduce britteness and increase the toughness of steel tool.
A. Tempering
B. Normalizing
C. Annealing
D. Quenching

It is the heat treatment of steel that produces extremely hard surface. The process consists of exposing the steel to hot ammonia gas for some hours.
A. Nitriding
B. Cyaniding
C. Carburizing
D. ammonia bath

How do you call the metals that contain large amount of carbon content?
А. ferrous metals
B. non-ferrous metals
C. base metals
D. precious metals

All these are basic kinds of cast iron, except
A. gray iron
B. malleable iron
C. white iron
D. red iron

Which of the following basic kind of cast iron is harder and more difficult to machine because it contains carbon in carbide state?
A. gray iron
B. malleable iron
C. white iron
D. wrought iron

How do you call metals that have no carbon content?
A. ferrous metals
B. malleable Iron
C. non-ferrous metals
D. white iron

Which of the folowing is the type of cast iron that can stand more shock and blows than regular cast iron?
A. nodular Iron
B. malleable Iron
C. wrought iron
D. gray iron

It is a metal of almost pure iron, ductile and very tough. It can be hammered and shaped at high temperature. It has a fibrous structure because of the presence of slag.
A. nodular Iron
B. malleable Iron
C. wrought iron
D. gray iron

A type of ferrous metal which is formed by remelting pig iron and scrap iron in a cupola furnace. It is brittle and usually gray in color, and commonly used in making casting.
A. cast Iron
B. malleable Iron
C. wrought iron
D. gray iron

A classification of iron ore which contains 70% iron when pure and 50% iron when mined.
A. Hematite
B. Magnetite
C. Limanite
D. Siderite

A classification of iron ore which contains 72.5% iron when pure and the remaining percentage are impurities.
A. Hematite.
B. Magnetite
C. Limonite
D. Siderite

Which of the following iron ores also known as "brown hematite" or ferric oxide a yellowish brown powder?
A. Hematite
B. Magnetite
C. Limonite
D. Siderite

It is the process of reheating or drawing of metal that has been hardened to a comparatively low temperature in order to relieve the hardening strain and increase the toughness of the steel.
A. Tempering
В. Annealing
C. Cyaniding
D. Normalizing

Case hardening is the process of hardening the outer surface of the metal and the inner parts are soft. What percentage of carbon content that this type of hardening is allowed?
A. 15 % and above
B. 10 to 20% only
C. less than 5% only
D. any of the following

A steel numbered SAE-AISI, C1018 and contains 0.10% to 0.30% carbon.
A. low carbon steel
B. medium carbon steel
C. high carbon steel
D. very high carbon steel

A steel numbered SAE-AISI, C1035 when not rolled and contains 0.30% to 0.60% carbon.
A. low carbon steel
B. medium carbon steel
C. high carbon steel
D. very high carbon steel

A steel numbered SAE-AISI, 1035 when not rolled and contains 0.60% to 1.30% carbon and used when extra hardness is re quired.
A. low carbon steel
B. medium carbon steel
C. high carbon steel
D. very high carbon steel

Which of the following alloying elements used in making high speed steel
A. Molybdenum
B. Nickel
C. Manganese
D. Silicon

It refers to that property in steel which resist indention or penetration. It is usually expressed in forms of the area of an indention made by a special ball under a standard load, or the depth of a special indentor.
A. Hardness
B. Ductility
C. Malleability
D. Wear Resistance

Copper is annealed by heating to a cherry red color and
A. dousing in cold water
B. dousing in oil
C. cooling slowly in air
D. dousing in hot water

What is the approximate melting point of Babbitt?
A. 1000 deg. F.
B. 750 deg. F.
C. 650 deg. F.
D. 500 deg. F.

At what temperature where soft solder approximately melts?
A. 250 deg. C
B. 450 deg. C
C. 350 deg. C
D. 550 deg. C

How do you call the process used to retard corrosion (rust) on iron pipe and fitting?
A. tinning.
B. galvanizing
C. soldering
D. sulphurizing

Copper is annealed by heating to a cherry red color and
A. dousing in cold water
B. dousing in oil
C. cooling slowly in air
D. dousing in hot water

What is the main purpose of "annealing" a metal?
A. to make the metal harder
B. to make the metal softer
C. to make the metal harder medium-hard
D. to make the metal harder shiny

The purpose of "tempering" is to make a metal what?
A. harder
B. less brittle
C. softer
D. more brittle

A specific method of galvanizing in which parts are tumbled in zinc dust at high temperatures
A. Sheradizing
B. super finishing
c. polishing
D. pickling

A hot - dip or electroplate application of tin to steel.
A. tin - plating
B. metal spraying
C. organic finishes
D. lapping

This process is known as bonderizing when used as a primer for paints.
A. Parkerizing
B. Honing
C. Hard surfacing
D. Galvanizing

A zinc coating applied to low carbon steel to improve corrosion resistance. The coating can be applied in a hot dip bath, by electroplating or by dry tumbling (sheradizing).
A. Parkerizing
B. Honing
C. Hard surfacing
D. Galvanizing

The electro - deposition of a coating onto the workpiece. Electrical current is used to drive ions in solution to the part. The workpiece is the cathode in the electrical circuit.
A. Electroplating
B. Calorizing
C. Burnishing
D. Buffing

The diffusing of aluminum into a steel surface,. producing an aluminum oxide that protects the steel from high - temperature corrosion.
A. Electroplating
B. Calorizing
C. Burnishing
D. Buffing

An electroplating-acid bath oxidation process for aluminum and magnesium. The workpiece is the anode in the electrical circuit.
А. Abrasive cleaning
В. Tumbling
c. Barrel finishing
D. Anodizing

A plain carbon steel with approximately 0.9 to 1.3 % carbon, which has been hardened and tempered.
A. Carbon tool steel
B. High speed steel
C. Low speed steel
D. Medium speed steel

A plain carbon steel with approximately 0.9 to 1.3 % carbon, which has been hardened and tempered.
A. Carbon tool steel
B. High speed steel
C. Low speed steel
D. Medium speed steel

Application of a thin phosphate coating on steel to improve corrosion resistance.
A. parkerizing
B. honing
C. hard surfacing
D. galvanizing

Contains tungsten or chromium and retains its hardness up to approximately 600 C.
A. Carbon tool steel
B. High speed steel
C. Low speed steel
D. Medium speed steel

Ceramic tools operate at what temperature?
A. below 2000 F
B. below 2200 F
C. above 2000 F
D. above 2200 F

What is the process used to retard corrosion on iron pipe
A. soldering
B. tempering
C. annealing
D. galvanizing

If the face-centered cubic lattice is compared with the hexagonal close-packed lattice, which of the following features describes the hexagonal close-packed structure only?
A. It has the closest packed lattice structure.
B. Its coordination number is 2.
C. Its deformation properties are more directional.
D. Its stacking order is reverse

Steels that are used for axles, gears, and similar pars are requiring medium to high hardness and high Strength are known as?
A. medium - carbon steels
B. very high - carbon steels
C. low-carbon steels
D. high - carbon steels

Spring back metal forming depends on
A. none of these
B. modulus of elasticity
C. strain rate
D. load applied

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

The most versatile and widely used stainless steel and sometimes referred to by its old name 18/8 which is derived from the nominal composition of 18% • chromium and 8% nickel.
A. Type 304
B. Type 316
C. Type 309
D. Type 316