Session 2: Basic Manufacturing Processes
Unit 3: Material
Textual Question-Answers
Check Your Progress
A. Fill in the blanks
1. Pouring of ………… into a mould is called casting.
Ans: molten metal
2. The processing of raw material or parts into finished goods withthe use of a tool is called………….
Ans: manufacturing
3. …………… is the process of removing undesired material froma workpiece.
Ans: machining
4. In milling …………….. are used to remove material from aworkpiece.
Ans: cutters
5. …………. is done to get the desired surface finish, correct sizeand accurate shape of the product.
Ans: finishing
B. Multiple choice questions
1. In which method is the required size and shape obtained throughplastic deformation of a material?
(a) Forming
(b) Machining
(c) Honing
(d) Welding
Ans: (a) Forming
2. All the sections of steel, such as channel, I-section, channel section, angle sections, flat iron, sheets, etc., are produced by……………
(a) rolling
(b) welding
(c) moulding
(d) casting
Ans: (a) rolling
3. Auto components like crankshaft, camshaft, connecting rod, tierod ends, ball joints, are prepared by……………(a) forging
(b) forming
(c) extrusion
(d) drawing
Ans: (a) forging
4. When a metal is extracted through a closed cavity to obtain thedesired shape of metal, that process is called…………….
(a) extrusion
(b) forming
(c) welding
(d) moulding
Ans: (a) extrusion
5. The process of joining similar and dissimilar materials iscalled…………….
(a) welding
(b) drawing
(c) casting
(d) None of the above
Ans: (a) welding
C. Answer the following questions
1. Differentiate between rolling and forming.
Ans: Rolling is a metal working process in which metal is passed betweenrotating rollers to reduce thickness and change cross-section, whereas formingis a general process in which metal is plastically deformed into the desiredshape without removal of material.
2. Explain the different types of joining processes.
Ans: The different types of joining processes are welding, brazing, soldering and riveting. Welding joins metals by melting, brazing and solderingjoin metals using filler material, and riveting joins components usingmechanical fasteners.
