Back to the 2025 paper
Similar questions
Engineering MaterialsChoose the correct option: In the Fe-Fe_3C equilibrium diagram, ledeburite is: (i) A mixture of ferrite and austenite (ii) A single-phase austenitic structure (iii) Pure cementite (iv) A eutectic mixture of austenite and cementite20252mEngineering MaterialsChoose the correct option: The BCC structure of Fe-C solid solution is known as (i) Ferrite (ii) Pearlite (iii) Cementite (iv) Austenite20242mEngineering MaterialsChoose the correct option: Which of the following is the hardest? (i) Austenite (ii) Bainite (iii) Pearlite (iv) Martensite20242mEngineering MaterialsChoose the correct option: The main purpose of normalising a hypoeutectoid steel is to: (i) Produce very soft coarse pearlite for maximum ductility only (ii) Refine grain size and produce uniform fine pearlite for improved strength and toughness (iii) Form martensite for maximum hardness (iv) Produce spheroidised cementite for easy machining20252m
PreviousChoose the correct option: Identify the correct statement regarding case hardening/surface hardening processes: (i) Harden only high-carbon steels by through hardening (ii) Modify the surface composition by diffusion of carbon and/or nitrogen while keeping a tougher core (iii) Rely only in rapid quenching with no change in composition (iv) Use only flame or induction as heat sourcesNextDescribe the three main types of metallic crystal structures (BCC, FCC, HCP) with their coordination numbers and packing factors.
AI LearningWeb Platform
Coursify — Personal AI Course Generator
Struggling with a difficult subject or concept? Turn any engineering topic into a structured course with interactive lessons, quizzes, and research-backed explanations.