MATERIAL SCIENCE ENGINEERING What are considered as the “building blocks” for engineering materials? What are the major classes of engineering materials? What types of materials behave like iron when placed in a magnetic field? What do you call metals reinforced by ceramics or other materials, usually in fiber form? What is a combination of one or more metals with a nonmetallic element? Polymer comes from Greek words “poly” which means “many” and “meros” which means __________. The engineering materials known as “plastics” are more correctly called ____________. What is a combination of two or more materials that has properties that the components materials do not have by themselves? What is a reference sheet for the elements that can be used to form engineering materials? What physical property of a material that refers to the point at which a material liquefies on heating or solidifies on cooling? What physical property of a material that refers to the temperature at which ferromagnetic materials can no longer be magnetized by outside forces? What physical property of a material refers to the amount of weight gain (%) experienced in a polymer after immersion in water for a specified length of time under a controlled environment? Atoms Metals, ceramics, polymers, semiconductors and composites Ferromagnetic materials Metal Matrix composites Ceramic part Polymers Composite Periodic Table Melting point Curie point Water absorption What physical property of a material that refers to the rate of heat flow per unit time in a homogenous material under steady-state conditions per unit are, per unit temperature gradient in a Thermal conductivity direction perpendicular to area? What physical property of a material refers to the highest potential difference (voltage) that an insulting material of given thickness can withstand for a specified time without occurrence of Dielectric strength electrical breakdown through its bulk? What physical property of a material refers to the ratio of the amount of heat required to raise the temperature of a unit mass of a substance 1 degree to the heat required to raise the same mass of Specific heat water to 1 degree. What physical property of a material refers to the temperature at which a polymer under a specified Heat distortion load shows a specified amount of deflection? temperature What mechanical property of a material refers to the nominal stress at fracture in a tension test at Stress rapture strength constant load and constant temperature? What mechanical property of a material refers to the resistance to plastic deformation? Hardness What parameter is defined as the temperature at which the toughness of the material drops below Nil ductility some predetermined value, usually 15ft-lb? temperature Endurance limit or What is obtained by repeatedly loading a specimen at given stress levels until it fails? fatigue strength of material Page 1 MATERIAL SCIENCE ENGINEERING What dimensional property of a material refers to the deviation from edge straightness? What dimensional property of a material refers to a wavelike variation from a perfect surface, generally much wider in spacing and higher in amplitude than surface roughness? Wood is composed of chains of cellulose molecules bonded together by another natural polymer called ________. What is a polymer production process that involves forming a polymer chain containing two different monuments? What is the generic name of class of polymer which is commercially known as “nylon”? By definition, a rubber is a substance that has at least _____ elongation in tensile test and is capable of returning rapidly and forcibly to its original dimensions when load is removed. Camber Waviness lignin Copolymerization Polyamide 200% What is a method of forming polymer sheets or films into three-dimensional shapes in which the sheet is clamped on the edge, heated until it softens and sags, drawn in contact with the mold by vacuum, and cooled while still in contact with the mold? Thermoforming What is a process of forming continuous shapes by forcing a molten polymer through a metal die? Extrusion What chemical property of a material which refers to its ability to resist deterioration by chemical or electrochemical reactions with environment? What refers to the tendency for polymers and molecular materials to from with an ordered, spatial, three-dimensional arrangement of monomer molecules? What is the amount of energy required to fracture a given volume of material? . What mechanical property of a material which is a time-dependent permanent strain under stress? What refers to the stress at which a material exhibits a specified deviation from proportionality of stress and strain? The greatest stress which a material is capable of withstanding without a deviation from acceptable of stress to strain is called _______. What is the maximum stress below which a material can theoretically endure an infinite number of stress cycles? What is a substance that attracts piece of iron? Which of the following is a natural magnet? What is the resistance of a material to plastic deformation? . Which of the following materials has permeability slightly less than that of free space? What materials has permiabilities slightly greater than of free space? Which of the materials have very high permiabilities? What is the defined by ASTM as a material that contains as an essential ingredient an organic substance of large molecular weight, is solid in its finished state, and some stage in its manufactured or in its processing into finished articles, can be shaped by flow? Page 2 Corrosion resistance Stereo specificity Impact strength Creep Yield strength proportional limit Endurance limit Magnet Lodestone Hardness Diamagnetic materials Paramagnetic materials Ferromagnetic materials Plastic MATERIAL SCIENCE ENGINEERING Some polymetric materials such as epoxies are formed by strong primary chemical bonds called ________. What do you call a polymer without additives and without blending with another polymer? A large molecule with two alternating mers is called as _______. What term is used to describe a polymer that has rubberlike properties? What is defined as an alloy of iron and carbon, with the carbon being restricted within certain concentration limits? What is the most popular steel refining process or technique which involves casting of steel from the BOF or electric furnace into cylindrical ingots? In what special refining process of steel where molten metal is poured down a tundish (chute) into an ingot mold? What type of steel has carbon as its principal hardening agent? What type of steel has 0.8% carbon and 100% pearlite? What group of steel are water-hardened tool steels? What group of steels are molybdenum high-speed steels? Steels that are used for axles, gears, and similar parts requiring medium to high and strength are known as? Galvanized steel are steel products coated with _________. What ASTM test for tension is designated for plastics? What ASTM test for compression is designated for plastic? What ASTM test for shear strength is designated for plastics? What is the ASTM tension testing designation for standard methods for steel products? Low-quality steels with an M suffix on the designation intended for non-structural application is classified as ____________. The use of acids to remove oxides and scale on hot-worked steels is known as_______. Cross linking Homo polymer copolymer or interpolymer Elastomer Steel Vacuum are remelting (VAR) Electron beam refining Carbon steel Eutectoid Group W Group M Medium-carbon steel Zinc D638 D695 D732 A370 Merchant quality Pickling To increase dynamic and high-temperature strength and hardness. What is the purpose of molybdenum in steel alloying? . Which of the following statements is NOT true? What prefix in steel identification means composition varies from normal limits? What is prefix in steel identification means it is made in an electric furnace? What letter suffix steel identification means that it is steel with boron as an alloying element? What refers to the tin mill steel, without a coating? What combination of elements has high electrical resistance, high corrosion resistance, and high strength at red hear temperatures, making it useful in resistance heating? A steel cannot qualify for stainless prefix until it has at least how many percent of chromium? Which of the following cast irons is a high-carbon, iron-carbon-silicon alloy? Page 3 About 10% of the earth’s crust is iron. X E xxBxx Black plate Nichrome 10% Deoxidizers MATERIAL SCIENCE ENGINEERING Which of the following cast irons is a high-carbon-silicon alloy? Which of the following cast irons is heat-treated for ductility? Which cast iron is hard and wear resistant? What is considered as the general purpose oldest type and widely used cast iron? Gray iron Malleable iron White iron Gray iron What is the effect if manganese in cast iron? To reduce hardness by combining with sulfur below 0.5% and increase hardness above 0.5% What is the effect of aluminum in cast iron? To deoxidize molten cast iron What is the effect of silicon in cast iron? Softens iron and increase ductility below 3.25% hardens iron above 3.25% and increase acid and corrosion resistance above 13% Iron is said to be abundant in nature. About how many percent of the earth’s crust is iron? What is the advantage of quench hardening? 5% All of the choices What is the lowest-temperature diffusion-hardening process and does not require a quench? Nitriding Quench-hardened steel does not require tempering to prevent brittleness. The following statements are true except one. Which one? Which of he following is a requirement for hardening a steel? What field of study encompasses the procurement and production of metals? What do you call earth and stone missed with the iron oxides? What is a coal that has been previously burned in an oxygen-poor environment? What is the most common alloying ingredient in copper? What refers to the casehardening process by which the carbon content of the steel ear the surface of a part is increased? What is the process of heating a hardened steel to any temperature below the lower critical temperature, followed by any desired rate of cooling? What is defined as an intimate mechanical mixture of two or more phases having a definite composition and a definite temperature of transformation within the solid state? What is the most undesirable of all the elements commonly found in steels? Page 4 All of the choices Metallurgy Gangue Coke Zinc Carburizing Tempering Eutectoid Phosphorus MATERIAL SCIENCE ENGINEERING What is a method of casehardening involving diffusion in which the steel to be casehardened is machined, heat-treated, placed in an air-tight box and heated to about 1000°F? What typical penetrator is used in Brinell hardness test? What is the ratio of the maximum load in a tension test to the original cross-sectional area of the test bar? Nitriding 10 mm ball Tensile strength What is the ratio of stress to strain in a material loaded within its elastic ranger? Modulus of elasticity What is a measure of rigidity? Modulus of elasticity In tensile testing, the increase in the gage length measured after the specimen fractures, within the gage length is called _______. What impurity in steel can cause “red shortness”, which means the steel becomes unworkable at high temperature? What is a process of producing a hard surface in a steel having a sufficiently high carbon content to respond to hardening by a rapid cooling of the surface? What is the common reinforcement for polymer composites? Which of the following fluids conducts electricity? What is defined as a local corrosion damaged characterized by surface cavities? What refers to the removal of zinc from brasses? What is the scaling off of a surface in flakes or layers as the result of corrosion? What corrosion occurs under organic coatings on metals as fine, wavy hairlines? What refers to the deterioration of material by oscillatory relative motion of small amplitude (20 to 100 µm) between two solid surfaces in a corrosive environment? percent elongation Sulfur Flame hardening Glass fiber Electrolyte Pitting Dezincification Expoliation Filiform corrosion Fretting corrosion The corroded member in a corrosion cell is the cathode. Indicate the false statement about corrosion. Steel is an alloy of iron and carbon with limits on the amount of carbon to less than ______ percent. 2 Stainless steels have tensile moduli greater than those of carbon and alloy steels. Indicate false statement about stainless steel? What are the four major alloying elements of austenitic stainless steels? The electrical resistance of stainless steels can be as much as _____ time that of carbon steel. What refers to a shape achieved by allowing a liquid to solidify in a mold? Which of the following is NOT a hardware requirement for die casting? What cast iron has modular or spheroidal graphite? Page 5 Iron, chromium, carbon and nickel 6 Casting Metal mold (matching halves) Ductile iron MATERIAL SCIENCE ENGINEERING What is a process for making glass-reinforced shapes that can be generate by polling resinimpregnated glass stands through a die? What term is used to denote a family of thermosetting polymers that are reaction products of alcohols and acids? What is the AISI-SAE steel designation for nickel 3.50 alloy? What is the AISI-SAE designation for resulfurized and rephosphorized carbon steel? What does AISI stands for? Continuous pultrusion Alkydes 23XX 12XX American Iron and Steel Institute What does SAE stands for? Society of Automotive Engineers What does ASTM stands for? American Society for Testing and Materials What is the approximate chromium range of a ferritic stainless steel? The Group H steels can be used in what temperature range? The following are primary alloying ingredients of Group H steel except: The chrome-molybdenum steels contain how many percent of molybdenum? The chrome-vanadium steels contain how many percent of vanadium? Manganese steel usually contains how many percent of manganese? The wear-resistance of this material is attributed to its ability to _______, that is, the hardness is increased greatly when the steel is cold worked. The special chrome steels of the stainless variety contain how many percent of chromium? What refers to the application of any process whereby the surface of steel is altered so that it will become hard? What refers to the ability of steel to be hardened through to its center in large section? What is the equilibrium temperature of transformation of austenite to pearlite? The alpha iron will become paramagnetic at temperature above ____________. What structure is formed when transformation occurs at temperatures down to the knee of the curve? What allotropic form of iron refers to iron that has a temperature range of room temperature to 1670°F? What steel surface hardening process requires heating at 1000°F for up to 100 hours in an ammonia atmosphere, followed by slow cooling? What is the chief ore of tin? What is the chief ore of zinc? What is the chief ore of titanium? What is the mixture of gibbsite and diaspore, of which aluminum is derived? The term “brass” is very commonly used to designate any alloy primarily of: The term “bronze” is used to designate any alloy containing: In a system of designating wrought aluminum alloys, a four digit number is used. What does the first digit indicates? Page 6 16% to 20% 600°C to 1100°C Cobalt 0.2 0.15 to 0.30 11 to 14 strain harden 11 to 17 Casehardening Hardenability 1333°F 770°C Pearlite Alpha iron Nitriding Cassiterite Sphalerite Ilmanite Bauxite copper and zinc copper and tin The alloy group MATERIAL SCIENCE ENGINEERING In a system of designating wrought aluminum alloys, what does the second digit represents? In the system of designating wrought aluminum alloys, the letter F that follows the number indicates what condition of the alloy? The following alloys are the chief alloys that are die-cast except: What is the minimum tensile strength of Gray Cast Iron class 50? What is the carbon content of wrought iron? The modifications of the alloy group or impurity limits As fabricated Manganese alloys 50000 lbf/in2 less than 0.1 percent Alnico is an alloy containing how many percent nickel? 14% The most common beta brass with a composition of 60 % copper and 40 % zinc is called ________. Red brass contains about how many percent of zinc? Yellow brass contains approximately how many percent of zinc? Indicate the false statement. What is the most abundant metal in nature? Indicate the false statement about aluminum. Muntz metal 15% 30% Tin is relatively soluble in copper. Aluminum It has poor thermal and electrical conductivity. What is the effect to aluminum with iron as the alloying element? Reduce hot-cracking tendencies in casting. What is the effect to aluminum with copper as alloying element? Increase strength up to about 12% Which of the following are two well-known nickel alloys with magnetic properties ideal for permanent magnets? The Portland cement is manufacture from the following elements except: What gives the average ratio of stress to strain for materials operating in the nonlinear region in the stress-strain diagram? What test determines the hardenability of a steel specimen? What steel relief process is used with hypocutectoid steels to change martenite into pearlite? What is another term for tempering? Alnico and Conife asphalt Secant modulus Jominy end-quench test Tempering Drawing or toughening All are steel surface hardening processes except one. Which one? For metric wire gauge, the No. 2 wire is ________ in diameter. Bus bars of rectangular cross section are generally used for carrying ________. What are used for interconnection on printed-circuit boards? Yellow brass is a copper alloy with improved mechanical properties but reduced corrosion resistance and electrical conductivity. How many percent of yellow brass is copper? Page 7 Annealing 0.2 mm high electric current Flat flexible conductors 65% MATERIAL SCIENCE ENGINEERING What type of copper alloy is used as collectors for electric generator? What is the electrical resistivity of pure copper in μΩ-cm? What should be the resistivity in μΩ-cm of a resistor material? What is the most widely used dielectric material in the electrical and electronics industry? What are natural or synthetic rubber like materials which have outstanding elastic characteristics? What are cellular forms of urethanes, polystyrenes, vinyls, polyehtylenes, polypropylenes, phenolics, epoxies and variety of other plastics? What is the widely used electrical insulator? What is the dielectric strength of an unimpregnated cellulose paper or kraft paper? What is the most widely known carbide? Class I capacitors have dielectric constants are up to _____. What are the typical dielectric constants of class II capacitors? What are the most widely used general-purpose coatings? What is widely used in the electronic industry as a structural member, such as tube envelopes, hermetic seals to metals or ceramics, protective coating on hybrid and integrated circuits, etc.? What refers to glasses which are devitrified about 100°C below their softening point to form a very fine network of crystalline phase? The percentage change in magnetic properties of materials resulting from temperature aging called the ____________. Tin Bronze 1.67 50 – 150 Plastic Elastomers Plastic foams Paper 6 to 12 MV/m silicon carbide 500 500 to 10,000 Alkyds Glass Glass ceramics aging coefficient The change in electrical resistance due to the application of magnetic field is called ____________. magnetoresistance Which material is used for de application such as electromagnetic cores and relays? Which of the following is known as “electrical steel”? What is the highest-frequency ferrite? Which material is used for Schottky barrier diodes, light-emitting diodes, Gunn diodes and injection lasers? Iron Silicon steel Garnet What material is used for electroluminescent diodes which can emit either green or red light? Lead compounds such as load sulfide, selenide and telluride may be used for which application? For hardness penetration test, the Rockwell test uses what type of penetrator? What is the combination of cutting and scratch test of a material? What refers to the strain energy per unit volume required to reach the yield point? The following are typical properties of ceramics except one. Which one? What refers to the average number of mers in the molecule, typically several hundred to several thousand? What nickel alloy has high electrical and corrosion resistance and high strength at red heat temperature and contain 15 to 20% chromium? Silicon bronze contains how many percent of silicon? What element is added to copper to increase its strength and fatigue properties? Page 8 Gallium Arsenide Gallium Phosphide applications Sphere File hardness test Elastic toughness High thermal conductivity Degree of polymerization Nichrome 3% Beryllium MATERIAL SCIENCE ENGINEERING What element is added to copper to make it extremely hard? What element constitutes the major component of most bronzes? The property of metals that allows them to be drawn into thin wires beyond their elastic limit without being ruptured is called Interaction between the surface of two closely adjacent bodies which causes them to cling together is known as Solids which break above the elastic limit are called The property of some elementary particles that causes them to exert force on one another I known as The property which permits the flow of current under the action of a potential difference is called When a body is resistant to heat, it is called The property of fluids by virtue of which they offer resistance to flow is known as The tendency of a body to return to its original size or shape after having been deformed is called The emission of light by a material because of its high temperature is known as Which of the following statements is correct concerning the passage of white light into a glass prism? The property by virtue of which a body resists any attempt to change its state of rest or motion is called The property of an isolated conductor to store electric charge is If the properties of a body are the same in all directions, it is called The property of an object that determines the direction of heat flow when in contact with another object is called The rate of flow of thermal energy through a material in the presence of a temperature gradient is called The property of some crystals of absorbing light difference extents, thereby giving to the crystals different colors according to the direction of the incident light is known as Emission of radiations from a substance during illumination by radiations of higher frequency is called If a materials is feebly repelled by a magnet it is The progressive decrease of a property as a result of repeated stress is called Property of some pure metals and their alloys at extremely low temperatures of having negligible to the flow of an electric current is called What property of an element is determined by the number of protons in its nucleus? What are considered as the building blocks for engineering materials? What refers to a metal combined with one or more other elements? What do you call metals reinforced by ceramic or other materials usually in fiber form? The engineering materials known as “plastics” are more correctly called What is a combination of two or more materials that has properties that the components material do not have by themselves? Page 9 Aluminum Tin malleability Adhesion Brittle Charge Conductance Thermoduric Viscosity Elasticity Incandescence The violet color travels slower than the red color Inertia Capacitance Isotropic Temperature Thermal conductivity dichroism fluorescence diamagnetic fatigue superconductivity Atomic number Atoms Alloy Metal Matrix Composites Polymers Composite MATERIAL SCIENCE ENGINEERING What physical property of material refers to the rate of heat flow per unit time in a homogeneous material under steady state conditions per unit area, unit temperature gradient in a direction perpendicular to the area? What is the absolute value of the ratio of the transverse strain to the corresponding axial strain in a body subjected to uniaxial stress? What physical property of a material refers to the highest potential difference that an insulating material of a given thickness can withstand for a specified time without occurrence of electrical breakdown through its bulk? What refers to the heat needed to change the temperature of the substances without changing its phases? What physical property of a material refers to the temperature at which a polymer under a specified load shows a polymer under a specified load shows a specified amount of deflection? What dimensional property of a material refers to a wave like variation from a perfect surface, generally much wider in spacing and in higher in amplitude than surface roughness? Wood is composed of chains of cellulose molecules bonded together by another natural polymer called What is a polymer production process that involves forming a polymer chain containing two different monomers? What is the generic name of a class of polymer which is commercial known as nylon? What is a method of forming polymer sheets or films into three-dimensional shapes, in which the sheets is clamped on the edge, heated until it soften and sags, drawn in contact with the mold by vacuum, and cooled while still in contact with the mold? What refers to the tendency for polymers and molecular material to form with an ordered spatial, three-dimensional arrangement of monomer molecules? What is the ratio of stress to strain in a material loaded within its elastic range? What is measure of rigidity? The greatest stress which a material is capable of withstanding without deviation from acceptable stress to strain is called What mechanical property of a material which is a time-dependent permanent strain under stress? In tensile testing, the increase in the gauge length measured after the specimen fractures within the gauge length is called Which of the following material has permeability, slightly less than that of free space? What materials has permeabilities slighter greater than that of free space? Which of the following materials have very high permeabilities? What is ASTM test for tension is designated for plastics? What is ASTM test for compression is designated for plastics? Page 10 Thermal conductivity Poisson’s Ratio Dielectric Strength Sensible heat Heat Distortion Temperature Waviness Lignin Copolymerization Polyamide Thermoforming Stereospecificity Modulus of elasticity Modulus of elasticity proportional limit creep Percent elongation Diamagnetic materials Paramagnetic materials Ferromagnetic materials D638 D695 MATERIAL SCIENCE ENGINEERING What is ASTM test for shear strength is designated for plastics? What is the ASTM tension testing designation for standard methods of steel products? What do you call a polymer without additive and without blending with another polymer? A large molecule with two alternating mers is known as What type of steel has 0.8% of carbon and 100% pearlite? Galvanized steel are steel products coated with The use of acids to remove oxides and scale on hot-worked steels is known as What do you call tin mill steel without a coating? What combination of elements has high electrical resistance high corrosion resistance and high strength at red heat temperature making it useful in resistance heating? What do you add to compensate for the remaining high iron-oxide content of the steel? Which of the following cast irons is high carbon, iron-carbon-silicon alloy? Which of the following cast irons is a heat-treated for ductility? What is considered as the general purpose, oldest type and widely used cast iron? D732 A370 Homopolymer copolymer or interpolymer Eutectoid Zinc Picking Black plate Nichrome Deoxidizers Gray iron Malleable iron Gray iron Nitriding What is the lowest-temperature diffusion hardening process and does not require a quench? Which of the following is a requirement for hardening a steel? All of the choices What do you call earth and stone mixed with the iron oxides? Gangue What is a coal that has been previously burned in an oxygen poor environment. Coke What refers to the case hardening process by which the carbon content of the steel near the surface Carburidizing of a part is increased? What impurity in steel can cause “red shortness”, which means the steel becomes unworkable in Sulfur high temperature? What is the process of producing a hard surface in a steel having sufficiently high carbon content to Flame hardening respond to hardening by rapid cooling of the surface? What is the most common reinforcement for polymer composites? Glass Fiber In electrochemistry, oxidation is a lost of Electron What is the process of putting back the lost electrons to convert the ion back to metal? Reduction What do call a fluid that conducts electricity? Electrolyte What do you call the removal of zinc from brasses? Dezincification What is the scaling off a surface in flakes or layers as the result of corrosion? Expoliation What refers to a shape achieved by a allowing a liquid to solidify in a mold? Casting What Cast Iron has nodular of spheroidal graphite? Ductile iron What is a process for making glass-reinforced shapes that can be generated by pulling resinContinuous pultrusion impregnated glass strands through a die? What is a natural substance that makes up a significant portion of all plant life? Cellulose What is a mixture of gibbsite and diaspore of which aluminum is derived? Bauxite The term bronze is used to designate any alloy containing Copper and tin The term brass is used to designate an alloy containing Copper and zinc What steel relief process is used with hypoeutectoid steels to change martenite into pearlite? Page 11 Tempering MATERIAL SCIENCE ENGINEERING The Portland cement is manufactured from the following elements except All are steel surface hardening processes except The pressure which a substances is capable of supporting without fracturing The dimensionless parameter describing deformation The general law of mechanics that stress is directly proportional to strain Page 12 asphalt Annealing Yield Stress Strain Hooke’s Law
