Journal of Applied Engineering, Technology and Management (JAETM) JOURNALS JNEC Thruel Rig Sar Toed (TRST) OTHER PUBLICATIONS Approaches and growing impacts of problem-based learning in teaching and learning at Jigme Namgyel Engineering College Infusing Energy Efficient Illumination Design to retrofit existing infrastructures- A case of energy-efficient illumination design of multipurpose hall at Jigme Namgyel Engineering College Power System Restoration of Eastern Grid of Bhutan using DigSILENT Power Factory