ELECTROMECHANICAL TRANSITION PROCESS CAUSED BY THE SUDDEN CHANGE IN THE RESULTANT TORQUE OF ACTIVE MECHANICAL FORCES ON THE SHAFT OF THE THREE-PHASE SYNCHRONOUS ALTERNATOR, INITIALLY IN PERMANENT SYNCHRONOUS OPERATION UNDER ELECTRICAL LOAD. apme 2026, 21 (1), 15-26. https://doi.org/10.36801/rvf4gg80.