Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Paper format: National Examination 16-Mec-A1, 3 hours, open book. Eight questions of equal value: Part A — Thermodynamics (Q1–Q4) and Part B — Heat Transfer (Q5–Q8). A complete paper is any five questions (three from one part and two from the other).
Reference texts: Çengel & Boles, Thermodynamics: An Engineering Approach (9th ed., McGraw-Hill) — first-law cycle analysis, wet-region steam properties, the ideal regenerative Rankine cycle with a closed feedwater heater, the air-standard Diesel cycle, and isentropic-efficiency compressor analysis; Çengel & Ghajar, Heat and Mass Transfer (6th ed.) and Incropera, DeWitt, Bergman & Lavine, Fundamentals of Heat and Mass Transfer (8th ed., Wiley) — steady conduction with internal generation in a composite cylinder, internal-flow convection at constant wall temperature, combined convection–radiation surface balances, and the LMTD method for counterflow heat exchangers. Water/steam properties are IAPWS-consistent; air is treated as an ideal gas with constant specific heats.
