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In this paper, we describe an integrated on-line system to improve the test and the evaluation of the experimental data in electric machine laboratory. The system is complement to the course taught of electric machines to undergraduate students. Our proposed system can automatically acquire the experimental data from data acquisition device on the personal computer and transfer the data through network, either the local area network or Internet, to the host server. The host sever performs the essential calculations of the obtained parameters. After the students enter their computational value through network and system interface, then the host server could record, compare, estimate and chart the result in real time. Our system not only improves the efficiency of the experimental data evaluation but also provide the online comments including experimental purposes, principles, necessary instrument equipments, special notes, operation procedures and results recording.