Q. What are the major components of GIS? Ans. GIS consists of key components like circuit breakers, disconnectors, busbars, and transformers for efficient power distribution. Circuit Breakers: Protect the system from overloads and faults, e.g., SF6 circuit breakers. Disconnectors: Isolate sections of the network for maintenance, e.g., load break switches. Busbars: Conduct electricity between different components, e.g., aluminum or copper busbars. Transformers: Step up or step down voltage levels, e.g., GIS transformers for compact installations. Insulators: Provide electrical insulation, e.g., solid dielectric insulators.