What is another name for the International System of Units (SI)?

• A. Modernized Version of Metric
• B. Space for Future Circuits
• C. Total impedance
• D. Equipment short-circuit current ratings

Answer: (A)

The International System of Units is the globally adopted measurement system used in science and engineering. It grew from the metric system and was strengthened and standardized to create a coherent set of base units (like meter, kilogram, second, ampere, kelvin, mole, candela) and a wide range of derived units. Describing it as the modernized version of metric fits because SI preserves the metric roots while updating, expanding, and standardizing them for universal use. The other options don’t describe a measurement system: one is not a meaningful phrase in this context, total impedance is an electrical property, and equipment short-circuit current ratings are specific safety ratings, not a system of units.