IESL Part I study plan

Map the official IESL Part I syllabus for IT/Communication and Mechanical Engineering into a topic checklist, marking each topic as strong, weak, or unknown.

Build a formula and reference sheet for mechanical engineering fundamentals (stress, strain, bending, torsion, thermodynamics cycles, fluid statics).

Work through 25 mixed numerical problems on mechanical stress analysis and fluid mechanics, recording error types.

Summarize OSI and TCP/IP layers, common protocols, subnetting rules, and basic network security controls on one A4 sheet.

Set up a spaced-repetition deck with at least 60 cards covering mechanical and IT/communication definitions and units.

Solve 20 problems on power transmission (gears, belts, bearings), material selection, and manufacturing processes, writing the governing equation before each calculation.

Explain the refrigeration cycle, psychrometrics, and heat exchanger basics in your own words without notes, then correct gaps.

Complete 20 subnetting and IP addressing exercises under timed conditions (2 minutes per item).

Describe the roles of routers, switches, firewalls, and load balancers in a typical enterprise network diagram you draw yourself.

Log every wrong answer in an error journal with the root cause (concept, unit, misread, or arithmetic).

Outline soil-water-plant relationships, irrigation scheduling, and drainage principles, and compute a simple irrigation requirement from given crop and climate data.

Summarize agricultural machinery and plantation processing operations (land preparation, planting, harvesting, post-harvest handling) in a process flow diagram.

Build a material and energy balance for a two-unit process (reactor plus separator) and solve three recycle and bypass problems.

Explain distillation, absorption, and drying fundamentals, and size a simple packed column using given equilibrium data.

List the key Sri Lankan agricultural and process industry standards and safety regulations that commonly appear in Part I questions.

Solve 15 combined problems on heat transfer in process equipment, fluid flow in pipes, and pump selection.

Describe HVAC, ventilation, and indoor air quality design criteria, and calculate a simple cooling load for a given room.

Explain water supply, drainage, and plumbing system layouts, including fixture units and pipe sizing principles.

Summarize fire detection, alarm, and suppression system types and the design logic behind each.

Review the error journal and re-solve every item from weeks 1 to 3 that was marked wrong.

Explain lighting design (lux levels, luminaire selection, utilization factor) and solve three lighting calculations.

Summarize electrical services in buildings: single-phase and three-phase distribution, earthing, protection, and cable sizing.

Solve 15 structural analysis problems on beams, trusses, and frames using equilibrium and simple influence concepts.

Describe concrete mix design, workability tests, curing, and common durability defects, and outline steel reinforcement detailing rules.

Explain soil classification, compaction, and bearing capacity, and compute settlement or bearing capacity for a simple footing.

Solve 15 highway and traffic engineering problems on geometric design, pavement thickness, and traffic flow relationships.

Explain water treatment and wastewater treatment process trains, and compute basic loading parameters (BOD, detention time, flow).

Analyze DC and AC circuits using Kirchhoff's laws, Thevenin and Norton equivalents, and phasors, solving 20 problems.

Summarize transformers, induction motors, and synchronous machines: construction, operating principle, and equivalent circuit.

Describe analog and digital electronics fundamentals, including op-amp circuits, logic gates, and basic modulation schemes.

Solve 15 telecommunication problems on signal bandwidth, modulation, transmission lines, and antenna basics.

Explain database normalization, SQL queries, software development life cycle models, and basic cybersecurity threats and controls.

Review mechanical engineering topics flagged as weak in week 1 and re-solve 10 representative problems.

Practice 10 short essay or explanation questions across all seven domains, writing structured answers in 8 minutes each.

Update the error journal and spaced-repetition deck with all new weak points from weeks 5 and 6.

Re-solve every error-journal item from all eight weeks and confirm each is now correct without notes.

Run two timed 30-question mixed quizzes on separate days and compare scores to identify remaining weak domains.

Recite from memory the key formulas, units, and standard values for each domain using the reference sheets.

Prepare an exam-day plan covering time allocation per section, question order, calculator and reference rules, and a fallback strategy for unknown questions.

Complete a final confidence checklist for all seven domains and mark any topic still below a self-set threshold for a last focused review.