THEORY EXAMINATION (SEM–II) 2016-17 MANUFACTURING SCIENCE

This question paper evaluates concepts from casting, welding, metal forming, heat treatment, machining, properties of materials, and manufacturing tools & processes.
It is divided into three sections testing definitions, sketches, process explanations, and comparative understanding.

SECTION – A (10 × 2 = 20 Marks)

This section contains ten short-answer questions, requiring brief definitions.
Topics include:

Fatigue in metals

Soldering

Casting defects

Cold working

Copper alloys

Gates in casting

Types of cores

Properties of moulding sand

Hardening process

Wire drawing

This section evaluates fundamental concepts of manufacturing and material behavior.

SECTION – B (5 × 10 = 50 Marks)

Students must attempt any five descriptive questions involving explanations and sketches.

Topics include:

Plastics & ceramics — classification and applications

Components of a gating system; types of gates

Labeled diagram of a lathe machine; its parts & operations

Annealing processes with diagrams

Working principle & construction of cupola furnace

Classification of steel; need for alloying elements; five alloying elements & their effects

Working of milling machine; up-milling vs down-milling

Working of shaper machine; comparison between shaper and planer

This section tests process understanding, machinery knowledge, and material science concepts.

SECTION – C (2 × 15 = 30 Marks)

Students must attempt any two long-answer questions.

Metal Forming Operations

Definition and neat sketches of forging, rolling, and drawing

Welding Processes

Classification of welding processes

Principle of gas welding

Types of gas welding flames, identification, and their specific uses

Forming Processes

Meaning of forming

Extrusion process

Important components & steps involved (with neat sketch)

This section evaluates deep conceptual understanding, diagrams, and manufacturing process flow.