About this exam

This is a 2017 final exam paper for electrical-engineering-lab-iv at aau (electrical-computer-engineering). This is a final laboratory examination for the Electrical Engineering Lab IV course, focusing on practical aspects of electrical machines and transformers. The exam evaluates students' understanding of experimental procedures, machine testing, and operational characteristics. **Key Topics Covered:** * Magnetic properties: Hysteresis and normal B-H curves, hysteresis vs. eddy current losses. * Transformer testing: Open circuit and short circuit tests, determination of transformer ratios, and load testing with resistive loads. * Induction machines: Winding resistance measurement, stator/rotor terminal identification, and starting methods (Direct-on-line, reduced voltage, Star-Delta). * DC machines: Starting methods and no-load testing. * Comparative analysis: Differences between induction motors and synchronous motors. **Exam Structure & Format:** * The exam consists of 7 descriptive and analytical questions. * Total marks: 50%. * Time allowed: 2:00 hours.