Testing Of Engineering Materials! Trivia Questions Quiz

The statement is true because the mechanical properties of materials, such as strength, hardness, elasticity, and ductility, determine how the material will behave under applied forces. Different applications require different mechanical properties, so understanding the mechanical properties of materials is crucial in selecting the right material for a specific usage.

Solid is the correct answer because it is a state of matter that is commonly found in engineering materials. Solids have a definite shape and volume, and their particles are closely packed together. In engineering, solid materials are often used for their strength, stability, and ability to withstand forces and pressures. They are also used in various applications such as construction, manufacturing, and structural components.

The bonding of atoms in a material directly influences its mechanical properties. The type of bonds formed between atoms determine the strength and stability of the material, which in turn affects its ability to withstand external forces and deformation. For example, materials with strong metallic bonding, such as steel, tend to have high tensile strength and are resistant to breaking, while materials with weak bonding, such as ceramics, may be brittle and easily fractured. Therefore, it is true that the bonding of atoms in a material has an effect on its mechanical properties.

Iron and carbon are indeed the major component elements in steel. Steel is an alloy made primarily of iron, with carbon being added in varying amounts to enhance its strength and other properties. The presence of carbon in steel allows for the formation of different crystal structures, resulting in a wide range of steel types with varying hardness, ductility, and other characteristics. Therefore, it is correct to say that iron and carbon are the major component elements in steel.

The statement suggests that when choosing a material, strength and durability are the most important factors to consider. This implies that the material should be able to withstand wear and tear, and be able to endure various conditions without easily breaking or deteriorating. Therefore, the answer "True" is correct as it aligns with the idea that strength and durability are crucial in material selection.

Stainless steel is indeed an alloy that is made up of steel, nickel, and chromium. The addition of nickel and chromium to steel enhances its corrosion resistance properties, making it highly resistant to rust and stains. This alloy is commonly used in various industries, such as construction, automotive, and kitchenware, due to its durability and aesthetic appeal. Therefore, the given statement is true.

Nanotechnology refers to the manipulation of matter at the atomic and molecular scale to create new materials and devices with enhanced properties. It is indeed a new breed of manufacturing techniques as it involves working with materials and structures on a nanoscale level, which is significantly smaller than what traditional manufacturing methods can achieve. This emerging field has the potential to revolutionize various industries by enabling the development of advanced products with improved performance and functionality.

Thermoplastics are a type of plastic that can be melted and re-molded multiple times without undergoing any significant chemical change. This property makes them highly moldable and versatile. They can be easily shaped into various forms using heat and pressure, allowing for the creation of complex and intricate designs. Therefore, it is true that thermoplastics are moldable plastics.

The weight of a material used to make a machine can affect the conservation of energy because heavier materials require more energy to move and operate. This means that more energy is needed to overcome the weight of the material, leading to a potential decrease in energy conservation. Additionally, heavier materials may require larger and more powerful components, which can also contribute to increased energy consumption. Therefore, the weight of a material used in a machine can indeed be a factor that affects the conservation of energy.

Alloying refers to the process of adding a metallic element to a metallic compound. This is done to enhance the properties of the compound, such as increasing its strength, hardness, or resistance to corrosion. By combining different metals, alloys can be created with unique characteristics that are not present in the individual elements. This process is commonly used in industries such as manufacturing, construction, and aerospace to create materials with specific properties for various applications.

Cast irons are commonly used in engine combustion chambers due to their high heat resistance and durability. They can withstand the high temperatures and pressures generated during the combustion process without deforming or cracking. Additionally, cast irons have good thermal conductivity, which helps in dissipating heat from the combustion chamber. These properties make cast irons ideal materials for engine combustion chambers, ensuring efficient and reliable engine performance.

Composite materials are indeed a combination of different materials, such as fibers, resins, and fillers, that are combined to create a material with superior mechanical properties compared to individual materials. This allows composites to have properties that are better than those of metals alone, making the statement true.

Cast iron materials are brittle because they have a high carbon content, which makes them prone to fracture under stress. Unlike other types of iron, cast iron does not have a ductile or malleable property, meaning it cannot be easily stretched or bent without breaking. This brittleness is due to the formation of graphite flakes within the material, which act as stress concentrators and weaken its structure. As a result, cast iron is not suitable for applications that require flexibility or impact resistance.

Ductility refers to the ability of a material to be stretched or deformed without breaking. Ferrous materials, which include iron and steel, are known for their high ductility, which makes them suitable for construction materials. This property allows them to withstand the forces and stresses that may be applied during construction, such as bending or stretching, without fracturing. Therefore, it is true that ductility is a key characteristic of ferrous materials selected for construction materials.

Cast irons are not used in applications that require support for heavy loads, such as bridge supports and under-chassis of transportation vehicles, because they are not impact resistant. This means that they are more likely to crack or break under the stress of heavy weights or sudden impacts. Therefore, the statement that cast irons are not used in these applications is true.

Cast iron material is used mostly in combustion chambers because it possesses low thermal expansion. This means that it does not expand significantly when exposed to high temperatures, making it ideal for withstanding the extreme heat generated in a combustion chamber. The low thermal expansion of cast iron helps to maintain the structural integrity of the combustion chamber and prevents any warping or distortion that could occur with materials that have higher thermal expansion coefficients.

The statement suggests that metric toms are a type of capacity unit of measure. Since the statement is true, the correct answer is True.

Bronze is not an element, but rather an alloy made up of copper and tin. An element is a pure substance that cannot be broken down into simpler substances, whereas bronze is a combination of two different elements. Therefore, the correct answer is false.

Cast iron materials are magnetic due to the presence of iron, which is a ferromagnetic material. This means that it can be magnetized and attracts other magnetic materials. Additionally, cast iron is heat resistant, making it suitable for applications where high temperatures are involved, such as in cooking utensils or engine components. The combination of these properties makes the statement "Cast iron materials are magnetic and heat resistant" true.

The piston is the engine part that uses aluminum material in the combustion chamber. This is because aluminum is lightweight and has good thermal conductivity, making it an ideal choice for the piston. The piston is responsible for compressing the air-fuel mixture in the combustion chamber and transferring the force to the crankshaft. Its aluminum construction allows for efficient heat transfer, preventing overheating and ensuring smooth operation of the engine.

Lubrication is the process of introducing a lubricant, such as oil or grease, between two moving metallic materials to reduce friction and prevent abrasion. The lubricant forms a thin film that separates the surfaces of the materials, allowing them to slide smoothly against each other without direct contact. This helps to minimize wear and tear, prolong the lifespan of the materials, and improve their overall performance.

The color of corrosion in aluminum is white.

Shafftings and gears in the transmission parts are mostly made up of steel material because steel is known for its strength, durability, and resistance to wear and tear. It can withstand high levels of stress and torque, making it ideal for transmitting power and handling the demands of the transmission system. Steel is also readily available, cost-effective, and easy to machine, making it a popular choice for manufacturing transmission components.

Rubber is commonly used in machine components for sealing oils to prevent leakage. Rubber has properties such as flexibility and elasticity, which allow it to create a tight seal when used in sealing applications. By using rubber for sealing, machine components can effectively prevent oil leakage, ensuring the proper functioning and efficiency of the machine.

Brass is an alloy that is composed of copper and tin. Tin is added to copper to create brass because it improves the strength, hardness, and corrosion resistance of the alloy. The addition of tin also gives brass a golden color, making it aesthetically pleasing for various applications such as musical instruments, decorative items, and plumbing fittings.

Thermoset plastics are not elastic like polymers. Unlike thermoplastics, which can be melted and reshaped multiple times, thermosets undergo a chemical reaction during curing that permanently sets their shape. Once cured, thermosets cannot be melted or reshaped, making them rigid and non-elastic. Therefore, the statement that thermosets are like polymers in behavior is false.

The statement is false because cast iron actually contains 2%-4% carbon, which is higher than the range mentioned in the statement.

Copper and Zinc are not component elements of Bronze. Bronze is an alloy made up of Copper and Tin. Zinc is not present in the composition of Bronze.

Testing a material helps in determining its toughness and durability. Toughness refers to the ability of a material to withstand stress and resist fracture, while durability refers to its ability to withstand wear, tear, and degradation over time. By conducting tests, such as impact tests or fatigue tests, the material's toughness can be evaluated. Similarly, durability can be assessed by subjecting the material to various environmental conditions or repetitive loading to see how well it holds up. Overall, testing provides valuable information about the material's strength and ability to withstand different conditions, helping in making informed decisions about its usage.

Moisture is the number one cause of corrosion in most metals. When metals come into contact with moisture, they undergo a chemical reaction called oxidation. This reaction causes the metal to lose electrons and form metal oxides, leading to the deterioration and corrosion of the metal. Therefore, oxidation is the correct answer to the question.