Engineering Exam Prep

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: - How to distinguish between forced convection (using the Reynolds number) and natural convection (using the Grashof number) on the exam. - The critical importance of calculating the film temperature, Tf = (Ts + T_infinity) / 2, for evaluating fluid properties from handbook tables. - The role of the Nusselt number (Nu) as the primary output of correlations, which is then used to find the convection coefficient, h. - A step-by-step process for selecting the correct empirical correlation: identify geometry, calculate dimensionless numbers (Re, Pr, Gr), and verify the validity range. - Common exam traps, such as using the wrong characteristic length, misidentifying the convection type, or using a correlation outside its valid range. 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

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: - The lumped capacitance method is valid only if the Biot number is less than 0.1. - The Biot number represents the ratio of internal conductive resistance to external convective resistance. - How to calculate the characteristic length (Volume / Surface Area) for common shapes like spheres. - The most common exam trap is failing to verify the Biot number condition before applying the lumped system equation. - How to use the transient temperature decay formula from the NCEES handbook to solve for time. 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

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: - How to model steady-state heat transfer using the thermal resistance circuit analogy found in the NCEES Handbook. - The specific thermal resistance formulas for plane walls, cylinders, and spheres and how to apply them. - How to combine series resistances for composite systems, including conduction, convection, and contact resistance. - The definition of the critical radius of insulation for a cylinder and why it's a common exam trap. - The importance of using correct surface areas for inner and outer convection calculations on pipes and spheres. 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

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: - How to write and balance a stoichiometric combustion equation for a hydrocarbon fuel. - The critical difference between percent theoretical air and percent excess air. - How to calculate the air-fuel ratio (AFR) on a mass basis for any combustion scenario. - Applying the first law of thermodynamics to reacting systems to find heat transfer. - Understanding the equivalence ratio and its role in defining lean versus rich mixtures. 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

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: - How to locate the seven primary properties of moist air on a psychrometric chart. - The graphical representation of sensible heating and cooling as a horizontal line on the chart. - How to trace a cooling and dehumidification process, which moves down and to the left. - The principle of adiabatic mixing and how to find the final state on a straight line between the two initial air streams. - The critical difference between wet-bulb, dry-bulb, and dew point temperatures to avoid common exam errors. 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