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BT-203 Exam Power Tracker

Tick off topics as you master them. Prioritize High Probability topics.

🏆 The "DNA" Top 10 (Whole Book High-Yield)

Mastery of these 10 topics alone typically secures a passing grade.

Done Rank Topic Unit Verified Frequency Prob.
1 Iron-Carbon Equilibrium Diagram 1 14 Times (Nearly every session) 99%
2 4-Stroke IC Engine (SI & CI) 5 13 Times 95%
3 Boiler Classification & Mountings 4 12 Times 92%
4 Lathe Machine (Construction/Ops) 2 11 Times 90%
5 Stress-Strain Diagram (Ductile) 1 10 Times 88%
6 Bernoulli’s Theorem (Derivation) 3 9 Times 85%
7 Second Law of Thermodynamics 4 9 Times 85%
8 Otto & Diesel Cycle Efficiency 5 8 Times 80%
9 Newton’s Law of Viscosity 3 7 Times 75%
10 Hardness Testing (Brinell/Rockwell) 1 6 Times 70%

Unit 1: Materials & Properties

Done Rank Topic & Focus Area Prob.
1 Iron-Carbon Diagram (Diagram + 3 Reactions + Phases) 99%
2 Stress-Strain Diagram (Mild Steel vs Cast Iron) 88%
3 Mechanical Properties (Hardness, Toughness definitions) 85%
4 Hardness Testing (Brinell & Rockwell) 70%
5 Classification of Materials (Ferrous vs Non-Ferrous) 60%
6 Elastic Constants (E, K, G, µ - Numericals) 55%
7 Impact Testing (Charpy vs Izod) 40%
8 Cast Iron Types (Grey, White, Malleable) 25%

Unit 2: Measurement & Production

Done Rank Topic & Focus Area Prob.
1 Lathe Machine (Construction, Parts, Ops) 90%
2 Drilling Machine (Radial Drilling M/c) 75%
3 Sine Bar (Principle, Setup, Formula) 70%
4 Vernier Caliper (Diagram, Least Count, Zero Error) 60%
5 Measurement Errors (Systematic vs Random) 50%
6 Slip Gauges (Wringing phenomenon) 45%
7 Temperature Measurement (Thermocouple) 40%
8 Production Processes (Casting, Welding) 30%

Unit 3: Fluid Mechanics

Done Rank Topic & Focus Area Prob.
1 Bernoulli’s Theorem (Statement, Derivation) 85%
2 Newton’s Law of Viscosity (Formula, Numerical) 75%
3 Hydraulic Turbines (Pelton, Impulse vs Reaction) 65%
4 Pumps (Reciprocating vs Centrifugal) 65%
5 Pascal’s Law (Hydraulic Press) 55%
6 Fluid Properties (Density, Surface Tension) 50%
7 Types of Fluids (Newtonian vs Non-Newtonian) 40%
8 Flow Measurement (Venturimeter) 30%

Unit 4: Thermodynamics & Steam

Done Rank Topic & Focus Area Prob.
1 Boiler Mountings vs Accessories (Diff, Functions) 92%
2 2nd Law of Thermodynamics (Kelvin/Clausius) 85%
3 Boiler Classification (Fire vs Water Tube) 80%
4 Steam Formation (T-S Diagram, Dryness Fraction) 70%
5 Specific Boilers (Cochran / Babcock-Wilcox) 60%
6 Thermodynamic Systems (Open, Closed, Isolated) 50%
7 1st Law & PMM1 (Statement) 50%
8 Zeroth Law (Thermal Equilibrium) 40%

Unit 5: IC Engines

Done Rank Topic & Focus Area Prob.
1 4-Stroke IC Engine (SI/CI Working + Sketches) 95%
2 Comparison: Petrol vs Diesel / 2S vs 4S 90%
3 Otto Cycle Efficiency (Derivation + Diagrams) 80%
4 Steam Engine (Parts, D-Slide Valve) 50%
5 Diesel Cycle Efficiency (Derivation) 45%
6 2-Stroke Engine (Ports vs Valves) 40%
7 Performance Parameters (IP, BP, Efficiency) 30%
8 Air Compressor (Single Stage Reciprocating) 30%