TY - JOUR AU - K. Murari PY - 2014/10/01 Y2 - 2024/03/28 TI - Method of Measuring Torque-Speed Characteristics of Fractional Horsepower Motors JF - Defence Science Journal JA - DSJ VL - 22 IS - 4 SE - Research Papers DO - 10.14429/dsj.22.6427 UR - https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/6427 AB - In determining experimentally the speed-torque characteristics of fractional horsepower servomotor, accurate measurement of small torques in necessary. The paper here describes the accurate measurement of small torques of the order of 50 gm-cm or even less. Principal of eddy-current damping is used on a thin metallic disc rotating in the air-gap of an electromagnet and the reaction torque due to eddy-currents in the metallic disc is balanced with the standard weights placed in a scale-pan. ER -