1. What could be the cause of a loud hum coming from a transformer?
2. How are capacitors broadly categorized? Describe how a DC capacitor would differ from an AC capacitor.
3. What is capacitive reactance?
4. What are the two types of transformers?
5. Explain where single-phase power and three-phase power are normally used.
6. The phase shift factors that affect the power calculation E x I relate to what circuits?
7. What is the impedance of a single-phase inductive circuit having a voltage of 120V and a current flow of 5 A?