Engineering Materials Questions

• Amorphous vs crystalline — pick the amorphous material from the list Which of the following is an amorphous (non-crystalline, glassy) material at room temperature?
• Effect of alloying elements in low-carbon steels — improved ductility and bendability In ordinary low-carbon steels, which element is most beneficial for promoting ductility and good bending qualities by neutralising hot shortness and refining sulfidic inclusions?
• Superalloys — temperature classification of Incoloy, Hastelloy, and Vitallium Incoloy, Hastelloy, and Vitallium are engineering alloys primarily designed for service at which temperature class?
• Crystal structures — coordination number of the face-centred cubic (FCC) lattice What is the coordination number (number of nearest neighbours) for atoms in a face-centred cubic space lattice?
• Clock pendulum materials — select the alloy used for thermal length stability Which material is widely used for making the pendulums of precision clocks due to its extremely low thermal expansion?
• Mechanical property definition — what does stiffness mean? Choose the correct definition of stiffness for an engineering material in the context of mechanics of materials and structural design.
• Materials for Automotive Components — Crankshaft Steels In automobile (motor car) engines, the crankshaft must withstand high torsion, bending, and fatigue. Which steel is most widely used for manufacturing motor car crankshafts?
• Grey Cast Iron — Key Characteristics Which statement best describes the nature of carbon and mechanical behavior in grey cast iron?
• Spheroidal (Ductile) Cast Iron — Graphite Morphology State whether the following is correct: “Spheroidal grey cast iron has graphite flakes.”
• Indian Steelmaking — Process at Rourkela Steel Plant Which steelmaking process is (or has historically been) adopted at the Rourkela Steel Plant for primary steel production?
• Surface Hardening Methods — Need for Quenching For which hardening process is quenching generally NOT required to obtain the hardened case?
• Induction Hardening — Dominant Electrical Parameter In induction hardening of steel components, which electrical parameter is typically operated at a high level to induce shallow, controllable surface heating?
• Bearing Materials — Best Choice for Light Loads and High Speeds Which material is most suitable for bearings subjected to light loads (and often higher speeds), prioritizing embeddability and conformability?
• Monel Metal — Composition Identification Monel is a corrosion-resistant engineering alloy commonly used in marine and chemical environments. Its principal constituent combination is:
• Effect of Temperature on Toughness — General Trend for Metals As the temperature of a metallic material is increased (within typical service ranges), its toughness generally:
• Iron–Carbon System — Hyper-Eutectoid Steel Definition State whether the following is correct: “A steel with carbon content above 0.8% (the eutectoid composition) is known as hyper-eutectoid steel.”
• Materials engineering — Hindalium composition for cookware and utensils: State whether the following statement is correct. “Hindalium is an aluminium–magnesium alloy that includes a small quantity of chromium.”
• Tool materials — composition shorthand: In the 18–4–1 high-speed steel designation, identify the correct approximate composition by mass percentage.
• Crystal structures of iron — phase identification: Which type of space lattice is exhibited by alpha-iron (ferrite) at room temperature?
• Mechanical properties for spring design: Which material property is most essential for spring materials intended to store and release elastic energy repeatedly without permanent set?