What project is the Power Grid Corporation of India Ltd (PGCIL) working on that involves high-altitude sustenance technologies transferred by DRDO?
1
Delhi-Meerut High Voltage Direct Current (HVDC) Project
2
Pang-Kaithal High Voltage Direct Current (HVDC) Project
3
East Siang-Tawang High Voltage Direct Current (HVDC) Project
4
Sambalpur-Angul High Voltage Direct Current (HVDC) Project