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Materials Science in Mechanical Engineering Reviewer, Lecture notes of Materials science

Romblon State University (Main Campus)Materials science

To ace your exams, this one can help you, this is a lecture notes or reviewer about materials science in Mechanical engineering

Typology: Lecture notes

2023/2024

Available from 05/24/2025

Jdyne
Jdyne 🇵🇭

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Reviewer in Materials Science and Engineering for M.E.
A. Choose the right letter that fit to your answer.
1. What is materials science?
a. The study of different types of metals.
b. The study of the structure and properties of materials.
c. The study of the Earth's minerals and rocks
d. The study of weathering and erosion
2. What is the primary objective of materials science?
a. To study the behavior of living organisms.
b. To design and develop materials for specific applications.
c. To explore the behavior of celestial bodies.
d. To study the interaction of light and matter.
3. What classification of engineering materials that is extremely good conductors of electricity and
heat?
a. Metal
b. Semi-conductor
c. Ceramics
d. Composites
4. Which of the following is not classification of materials commonly used in materials science?
a. Ceramics
b. Composites
c. Polymers
d. Gemstones
5. __________ are compounds of metallic and non-metallic elements. They are mainly oxides,
nitrides, and carbides.
a. Polymers
b. Metals
c. Ceramics
d. Composites
6. Which of the following is the difference of non-ferrous metal in ferrous metal?
a. Magnetic
b. Durable strong
c. More likely to rust
d. Non-magnetic
7. These are the materials which have electrical properties that are intermediate between the
electrical conductors and insulators.
a. Semi-conductors
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Download Materials Science in Mechanical Engineering Reviewer and more Lecture notes Materials science in PDF only on Docsity!

Reviewer in Materials Science and Engineering for M.E.

A. Choose the right letter that fit to your answer.

  1. What is materials science? a. The study of different types of metals. b. The study of the structure and properties of materials. c. The study of the Earth's minerals and rocks d. The study of weathering and erosion
  2. What is the primary objective of materials science? a. To study the behavior of living organisms. b. To design and develop materials for specific applications. c. To explore the behavior of celestial bodies. d. To study the interaction of light and matter.
  3. What classification of engineering materials that is extremely good conductors of electricity and heat? a. Metal b. Semi-conductor c. Ceramics d. Composites
  4. Which of the following is not classification of materials commonly used in materials science? a. Ceramics b. Composites c. Polymers d. Gemstones
  5. __________ are compounds of metallic and non-metallic elements. They are mainly oxides, nitrides, and carbides. a. Polymers b. Metals c. Ceramics d. Composites
  6. Which of the following is the difference of non-ferrous metal in ferrous metal? a. Magnetic b. Durable strong c. More likely to rust d. Non-magnetic
  7. These are the materials which have electrical properties that are intermediate between the electrical conductors and insulators. a. Semi-conductors

b. Advanced materials c. Non-metals d. Polymers

  1. It is used in implantation of damaged body parts or tissues. a. Advanced materials b. Metals c. Ceramics d. Biomaterials
  2. What is the most common ferrous metal? a. Aluminum b. Silicon c. Steel d. Silver
  3. It is composed of iron and contain small amounts of other elements? a. Steel b. Ferrous c. Non-ferrous d. Phosphorous
  4. _______ is one of the most widely used non-ferrous metals in industry. It is soft, malleable, and good conductor of electricity. a. Copper b. Aluminum c. Steel d. Bronze
  5. It can give better strength, ductility, and toughness than plain carbon steels. a. Wrought iron b. Alloy steel c. Cast iron d. Steel
  6. Which of the following are not characteristics of ferrous metals? a. It contains iron. b. More likely to rust. c. It is high corrosion resistance. d. It is durable and strong
  7. Which of the following is not an application of polymers? a. Polyethylene b. Silicon carbide c. PVC d. Rubber

c. Corrosion d. Flammability

  1. The ability of material to resist penetration by a harder body. a. Hardness b. Toughness c. Ductility d. Brittleness
  2. It is defined as its ability to change its shape under load without breaking and to retain its shape after the removal of load. a. Toughness b. Plasticity c. Brittleness d. Hardness
  3. Which of the following is not property of physical properties? a. Density b. Melting point c. Thermal conductivity d. Ductility
  4. These properties include the behavior of materials when exposed to different wavelengths of light such as visible, ultraviolet, and infrared? a. Physical properties b. Mechanical properties c. Chemical properties d. Optical properties
  5. If an object is placed on one side of a material and a light wave is incident on the other side, then the object can be seen clearly. a. Absorption b. Dispersion c. Transparency d. Reflection
  6. Most materials expand when __________. a. Heated b. Cooled c. Compressed d. Changing its temperatures
  7. The amount of heat required to change temperature of the material by one degree. a. Thermal conductivity b. Heat capacity c. Thermal stress d. Thermal expansion
  1. This property measures how well a material conducts heat. a. Thermal conductivity b. Heat capacity c. Thermal stress d. Thermal expansion
  2. _______ defined as a material’s ability to conduct electric current. a. Resistivity b. Dielectric strength c. Resistance d. Conductivity
  3. What will happen to the material if it is cooled? a. Compress b. Contract c. Expand d. Nothing changed
  4. Property of magnetic materials that indicates how easily the magnetic flux is build up in the material. a. Retentivity b. Coercivity c. Permeability d. Reluctance
  5. It determines the ability of material to be suitable for a particular magnetic application. a. Physical properties b. Magnetic properties c. Chemical properties d. Mechanical properties
  6. __________ refers to the separation of light into its individual components or colors as it passes through a medium. a. Absorption b. Reflection c. Translucence d. Dispersion
  7. When light falls on a material surface, a portion of the incident beam is either absorbed or transmitted. a. Absorption b. Reflection c. Translucence d. Dispersion
  8. Some examples of this materials are rubber, glass, plastics, etc. and these materials do not allow free movement of electrons. a. Insulators

c. Tin d. Cast iron

  1. This metal has high corrosion resistance and has good machinability, formability, and castability. a. Aluminum b. Silver c. Tin d. Nickel
  2. It is the stress experienced by a body due to thermal expression or contraction. It can be potentially destructive in nature as it can make the material explode. a. Thermal conductivity b. Thermal stress c. Thermal expansion d. Heat capacity
  3. What is the main alloys of copper? a. Brass and silver b. Brass and iron c. Brass and bronze d. Brass and steel
  4. What is the effect of sulfur in cast iron? a. It makes the iron hard and strong. b. It makes the cast iron white and hard. c. It makes the cast iron hard and brittle. d. It helps the cast iron to produce sound casting free from blow-holes.
  5. The _______ in wrought iron improve the strength, fatigue resistance and corrosion resistance of iron. a. Fibers b. Slag fibers c. Resistance d. Iron
  6. Combination of two or more materials with distinct characteristics. a. Composites b. Semi-conductors c. Metals d. Ceramics
  7. __________refers to how much a material expands or contracts with changes in temperature. a. Thermal conductivity b. Heat capacity c. Thermal expansion d. Thermal stress
  1. Materials that are utilized in high technology applications. a. Polymers b. Biomaterials c. Metals d. Advanced materials
  2. What is material testing? a. The evaluation of material without causing damage, making them valuable for inspecting finished products and structures. b. Measures the materials resistance to stretch or pulling forces. c. Determine how materials will be behave under different conditions and stresses, ensuring that they meet specified standards, performance request and safety regulations. d. Evaluates a materials ability to withstand compressive forces.
  3. It is also known as bending testing, asses a material’s resistance to bending or flexing. a. Ultrasonic testing c. Tensile testing b. Flexural testing d. Impact testing
  4. Which of the following is not examples of semi-conductor materials? a. Glass b. Silicon c. Germanium d. Gallium arsenide
  5. The inverse of conductivity and is a measure of how much a material opposes the flow of electric current? a. Conductivity b. Resistivity c. Permeability d. Retentivity
  6. What AISI means? a. American Iron Society Institute b. Asian Iron and Steel Institute c. American Iron and Steel Institute d. Asian Iron and Society Institute
  7. A method of non-destructive testing that uses high frequency sound waves to detect internal flaws, cracks or discontinuities in materials. a. Radiographic testing c. Dye penetrant testing b. Magnetic particle testing d. Ultrasonic testing
  8. It plays a critical role in the automotive industry because it sets standards and guidelines for engineering and technical practices. a. AISI b. ASTM c. SAE

c. Sand, brick, cement d. Nylon, rubber, plastic

  1. This type of mechanical testing evaluates a materials ability to absorb energy under sudden loading conditions. a. Impact testing c. Tensile testing b. Flexural testing d. Compression testing
  2. What is cast iron? a. A highly refined iron with a small amount of slag forged out into fibers. b. It is very brittle and less ductile materials and widely used metal c. It can give better strength, ductility, and toughness than plain carbon steel. d. It is the heaviest and softest among metals. .
  3. They separate and analyze the components of a material mixture based on their chemical properties. a. Gas and liquid chromatography c. Spectroscopy b. Microscopy d. Chemical analysis
  4. It is used to measure the change in mass of a sample as a function of temperature (or time) under controlled heating or cooling conditions. a. Hardness of steel materials c. Thermogravimetric analysis b. Thermal analysis d. Chemical analysis
  5. XXXX the first two digit means_________. a. Type of material selected b. Type of the carbon c. Amount of material present in the steel d. Amount of carbon present in the steel
  6. It describes how materials respond to applied forces or load. a. Physical properties b. Mechanical properties c. Optical properties d. Magnetic properties
  7. What is the effect of chromium on alloy steel? a. It increases the strength and toughness of the steel. b. It forms hard abrasion-resistant particles increases strength and high elastic limit. c. It imparts corrosion resisting properties to steel. d. It commonly ranges from 0.30% to 1 .00%.
  8. The effect of this alloying element in alloy steel is it increases the strength and toughness of the steel. a. Tungsten b. Chromium c. Sulphur d. Nickel
  1. The ability of this mechanical properties is to absorb energy and deform fracture or failure. a. Brittleness b. Hardness c. Toughness d. Ductility
  2. It helps to analyze the chemical composition and purity of materials, ensuring they meet desired specifications. a. Chemical analysis c. Non-destructive testing b. Thermal analysis d. Mechanical testing
  3. It is the measures of its resistance to indention and is one of the most significant properties of metal. a. Hardness of steel materials c. Thermogravimetric analysis b. Chemical analysis d. Thermal analysis
  4. The process of heating and cooling metals to change their microstructure and to bring out the physical and mechanical characteristics that make metals more desirable. a. Materials testing c. Annealing b. Quenching d. Heat treatment
  5. Heating the steel again after quenching adds elasticity and toughness, transforming the steel to a structure with high resistance to wear. a. Quenching c. Annealing b. Tempering d. Normalizing
  6. A process used to reduce residual stresses in materials, typically metals, that have been subjected to thermal or mechanical processes such as welding, machining, or forming. a. Normalizing c. Hardening b. Annealing d. Stress relieving
  7. The process of heating and slow cooling of solid materials. a. Normalizing c. Hardening b. Annealing d. Stress relieving
  8. Which of the following are NOT TRUE about annealing? a. It is crucial in the production of wire and sheet metal to enhance formability and reduce cracking during forming processes. b. It is employed in the glass industry to relieve stress induced during the manufacturing process. c. It is commonly used in the production of gears and gear shaft for various machinery. d. It is used to improve the structure an soften the steel source, semi-hard steel, hard steel and alloy steel are difficult to cut due to their hardness.
  9. This process increases the hardness and strength of the steel without changing its shape, but the steel becomes more brittle.

b. Hardening c. Normalizing d. Case hardening

  1. What will happen to the hardness of steel when it comes to the tempering? a. The hardness is increased. b. The hardness is slightly reduced. c. Nothing changed to the hardness. d. It becomes more brittle.
  2. Steel is heated to a temperature higher than its transformation point to form austenite, then the steel is quickly cooled to form martensite. a. Tempering b. Annealing c. Hardening d. Quenching
  3. Which of the following are true about nitriding in surface hardening? a. Use on low carbon content steel b. Use ammonia or cyanide salt baths c. Depth up to 6 mm d. Utilizes localized heating B. Fill the correct answer in the blanks.
  4. Heating the steel in a carbon-rich environment __________. Carburizing
  5. Introducing nitrogen onto the surface ___________. Nitriding
  6. Combining nitrogen and carbon _____________. Carbonitriding
  7. To increase strength, hardness, and wear resistance________. Surface hardening, bulk hardening
  8. To increase ductility and softness_____________. Tempering, recrystallization annealing
  9. To increase toughness __________. Tempering, recrystallization annealing
  10. To obtain fine grain size ___________. Recrystallization annealing, full annealing, normalizing
  1. To improve machineability __________. Full annealing, normalizing
  2. To improve cutting properties of tool steels____________. Hardening, tempering
  3. To improve surface properties _______________. Surface hardening, corrosion resistance-stabilizing treatment and high temperature resistance-precipitation hardening, surface treatment
  4. To improve electrical properties____________. Recrystallization, tempering, age hardening
  5. To improve magnetic properties __________. Hardening phase transformation
  6. To remove internal stresses induced by differential deformation by cold working, non- unform cooling from high temperature during casting and welding___________. Stress relief annealing