FE Mechanical Exam Prep 70, Second Law Entropy and Isentropic Efficiency

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - Why the Second Law of Thermodynamics is essential for measuring process quality, something the First Law's energy balance cannot do. - That entropy generation (S_gen) is the key indicator of process irreversibility and is always positive for real processes. - How an isentropic process (constant entropy) serves as the ideal, reversible benchmark for real thermodynamic components. - The correct application of isentropic efficiency formulas for both work-producing (turbines) and work-consuming (compressors) devices. - A mnemonic to avoid the common exam trap of inverting the isentropic efficiency ratio for turbines and compressors. For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep