(SEM IV) THEORY EXAMINATION 2021-22 MANUFACTURING PROCESSES

SECTION A — Short Descriptive Paragraph Needed

, Section A contains basic questions on casting shrinkage, forging differences, cutting tools, CNC advantages, grinding wheel hardness, dressing vs truing, straight polarity in arc welding, brazing vs soldering, ECM electrolyte, and water jet machining uses.
Each answer must be a short paragraph explaining the term clearly.

Extra sample questions:
Explain pattern allowances in casting in a short paragraph.
Describe the meaning of machining allowance in 4–5 lines.
Explain upsetting operation in forging briefly.

SECTION B — Medium Descriptive Paragraph Needed

Section B contains deeper questions such as hot vs cold working, taper turning methods (with sketch), grinding wheel specifications, atomic hydrogen welding, and notes on EBM/USM/LBM. These answers should be one complete descriptive paragraph explaining the steps, working, or applications.

Extra sample questions:
Explain the working of a lathe tailstock in paragraph form.
Describe principle and applications of powder metallurgy.
Explain MIG welding in one descriptive paragraph.

SECTION C — Long Description Paragraph Needed
 

 contains long questions such as maximum draft in rolling, solidification in casting + defects, Merchant’s force circle derivation, tool life equation, chip thickness in grinding, honing/lapping/superfinishing, DC arc characteristics, resistance welding principle, abrasive jet machining, and ECM material removal.
These answers must be written as one long continuous paragraph, explaining formulas, diagrams, reasoning, and results.

Extra sample questions:
Explain the full working of TIG welding in a detailed paragraph.
Describe the complete mechanism of metal removal in EDM.
Explain the hot rolling process with neat description.