JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV Year ENGINEERING MATERIALS Previous Question Paper (July/August - 2023 - R18)
Note: Part A is compulsory, carrying 25 marks. Answer all questions in Part A. In Part B, answer any one question from each unit (10 marks each).
Part A
What is structural steel?
Answer
Structural steel is a category of steel used as a construction material for making structural steel shapes. It is characterized by specific chemical compositions and mechanical properties defined by standards (e.g., ASTM A36) to ensure strength, ductility, and weldability in buildings, bridges, and industrial infrastructure.
What are TRIP steels?
Answer
TRIP steels (Transformation-Induced Plasticity steels) are advanced high-strength steels that utilize the transformation of retained austenite into martensite during plastic deformation. This mechanism provides an excellent combination of high tensile strength and high ductility, making them ideal for automotive safety components.
What are superalloys?
Answer
Sign in to view the complete answer paper.
Where are superalloys commonly used?
Answer
Sign in to view the complete answer paper.
What are applications of piezo materials?
Answer
Sign in to view the complete answer paper.
Explain the factors considered for achieving Minimum Accident Potential (MAP).
Answer
Sign in to view the complete answer paper.
How stainless steels are highly corrosion resistant?
Answer
Sign in to view the complete answer paper.
How stainless steels are classified?
Answer
Sign in to view the complete answer paper.
What do you mean by bio materials?
Answer
Sign in to view the complete answer paper.
Give few examples of bio materials.
Answer
Sign in to view the complete answer paper.
Part B
Explain classification of structural steels with their compositions and applications.
Answer
Sign in to view the complete answer paper.
Explain the composition, properties and applications of HSLA steels.
Answer
Sign in to view the complete answer paper.
Explain the applications and properties of Ni based super alloys.
Answer
Sign in to view the complete answer paper.
Explain the applications and properties of Co based super alloys.
Answer
Sign in to view the complete answer paper.
Explain the classification of Electronic Engineering Materials.
Answer
Sign in to view the complete answer paper.
Explain the applications and properties of Ferro-electrics.
Answer
Sign in to view the complete answer paper.
Explain the properties and applications of Ferritic stainless steels.
Answer
Sign in to view the complete answer paper.
Explain the properties and applications of Martensitic stainless steels.
Answer
Sign in to view the complete answer paper.
Explain in detail about few important bio metallic alloys.
Answer
Sign in to view the complete answer paper.
Explain various applications of bio materials.
Answer
Sign in to view the complete answer paper.