Virtual Laboratory Application of Direct Current Electric Motor: An Expert-Based Evaluation. - Rohjai Badarudin; Didik Hariyanto; Edy Supriyadi; Istanto Wahyu Djatmiko; Mochamad Bruri Triyono; Gulzhaina K. Kassymova; Ulzhan Urazaliyeva (Int. J. Online Biomed. Eng., 2023)