(SEM IV) THEORY EXAMINATION 2017-18 MANUFACTURING SCIENCE & TECHNOLOGY-1

This B.Tech Manufacturing Science & Technology–I (RME402) question paper from the 2017–18 IV Semester Theory Examination is a comprehensive assessment designed to evaluate a student’s conceptual understanding, analytical skills, and problem-solving abilities in core manufacturing engineering. The paper carries 70 marks and is divided into three structured sections (A, B, C), each focusing on progressively deeper levels of manufacturing science topics. 

Section A – Short Answer Fundamentals

Section A contains seven brief questions, each worth 2 marks, covering foundational concepts of manufacturing. Students must demonstrate clear definitions and conceptual clarity on topics such as:

Classifications of manufacturing processes

Recrystallization temperature and its role in metal forming

Forging and types of forging operations

Angle of bite in rolling and parameters affecting it

Difference between blanking and punching

Hot chamber vs. cold chamber die casting

Unconventional metal forming processes
These questions test the student’s basic theoretical knowledge required for advanced applications. 

Section B – Analytical & Descriptive Problems

This section requires attempting any three questions, each of 7 marks, and focuses on deeper understanding and explanation-based problems including:

Defects in rolling, causes, and remedies

Powder metallurgy: importance, steps, and applications

Deep drawing process, along with its typical defects

Comparison of compound and progressive dies, with diagrammatic explanation

Advantages of bottom gating systems and deriving the filling time equation
These questions expect structured answers with diagrams, explanations, and engineering reasoning. 

Section C – Advanced Theory & Numerical Applications

Section C includes five main questions (Q3 to Q7), each with either-or choices, focusing on higher-order concepts, derivations, and numerical calculations.

Topics covered include:

Centrifugal casting, its types, and applications

Casting defects, causes, and remedies

Explosive forming and its working mechanism

Jigs & fixtures with the 3-2-1 principle of location

Sheet metal operations like trimming, shaving, lancing, notching, and nibbling

Derivation of radial stress in deep drawing

Wire drawing numerical with friction factor, stress determination, and reduction limits

Rolling bite angle calculation using given roll diameter and reduction

Forging pressure expression derivations

Forging force calculation using yield stress, friction factor, and dimensional change

These questions measure a student’s ability to apply formulas, understand mechanics of forming processes, and perform multi-step engineering calculations.