Correct option is B
The standard voltages allowed for high-voltage power transmission in India are regulated by the
Central Electricity Authority (CEA). The allowed voltage levels for high voltage (HV) and extra-high voltage (EHV) transmission in India are:
220 kV: Commonly used for interconnection between substations and medium-distance power transmission.
400 kV: Used for bulk power transmission over longer distances.
765 kV: The highest standard voltage in India's power grid for ultra-high voltage transmission, used to minimize losses and increase efficiency for very long distances.
