Is it possible to get 3 phase power of 20 hp load from a 2 phase supply of 230 v 50 hz .
I'm not sure about the 2o hp load but you'll need a phase converter
You cannot get 3-phase power of 20 HP load from a single-phase supply of 230 V/16 A, 50 Hz. You would need a power supply capacity of 3-phase 400 V/50Hz. A 3-phase 400 V/50Hz station has a maximum capacity of 11KW.