Learn the meaning of saturated vapor pressure, how it forms, its relationship with temperature, boiling point, evaporation, and industrial applications.

Learn what transformer power and capacity mean, how kVA differs from kW, and why transformers are rated in apparent power instead of active power. Understand rated capacity, input vs output power, efficiency losses, and key calculation principles for safe and reliable transformer operation and selection.

Learn whether electric current or voltage causes electric shock, how electricity affects the human body, safe voltage levels, and key electrical safety principles.

Learn the differences between VHF and UHF frequencies, radio spectrum classifications, frequency ranges, applications, and communication advantages.

Learn the difference between lightning rods and surge arresters, how they work, their applications in power systems, and lightning protection methods.