This mode of governor compensates the change in frequency by change in generation and is called Restricted Governing Mode of Operation. to operate on FGMO with manual intervention…”. It is at present organised through free or restricted governor mode of operation ( FGMO/RGMO). Restricted Governor Mode of Operation (RGMO): RGMO term in IEGC in vogue since May. FGMO is the basic mode: if frequency tends to raise, increase the. are widely used in the academic and industrial world.