MECHANICAL 4TH SEM. ALL SUB PYQ SBTE
🧾 Subjects in 4th Semester (SBTE Mechanical)
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Thermal Engineering – I
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Strength of Materials
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Manufacturing Processes – I
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Engineering Metrology
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Mechanical Drafting & CAD
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Environmental Studies (non-technical but mandatory)
📘 How Diploma Youth Helps You?
✅ 5+ Years of PYQs in PDF Format
✅ Chapter-wise Segregation
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🔍 Sample Topic-Wise PYQ Insights
🔥 1. Thermal Engineering – I
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Laws of Thermodynamics – Always 6-8 marks
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Otto & Diesel cycle efficiency questions – Repeat in every session
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IC Engine vs CI Engine
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Psychrometric Chart numerical (appeared in 2022, 2023)
💪 2. Strength of Materials (SOM)
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Bending Moment and Shear Force Diagrams – Very Important
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Stress vs Strain graph and modulus of elasticity
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Torsion in shafts – theory + numerical
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Column and strut-based derivations
🛠️ 3. Manufacturing Process – I
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Casting defects and patterns – 4 marks questions
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Welding types, advantages, and diagrams
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Lathe operations and turning tools – repeat questions
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Injection molding and die-casting – practical-based
📏 4. Metrology
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Limits, fits & tolerances
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Types of measuring instruments
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CMM (Coordinate Measuring Machines) – recent trend
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Vernier caliper and micrometer numerical
🖥️ 5. Mechanical Drafting & CAD
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CAD commands (AutoCAD shortcuts)
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Isometric views – theory + sketching
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Orthographic projections and 3D views
🧠 How to Prepare Smartly for Mechanical 4th Sem?
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Start with PYQs – Cover the most repeated questions first
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Make short notes for formulas and definitions
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Practice numericals in rough – 2 times minimum
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Draw diagrams for all theoretical questions
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Refer to textbooks + notes + Diploma Youth PDF together
Subject |
Frequently Asked Topics |
|---|---|
Thermal |
Carnot Cycle, Steam Tables |
SOM |
Stress-Strain Diagrams |
MP |
Casting/Welding Types |
CAD |
Orthographic to Isometric |
