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Title: Measure the torque of an electric motor by the mass lifted by the motor.
Subject: Electricity Grade level: Middle School - Grades 7-9 Academic Level: Ordinary Project Type: Experimental Cost: Low Awards: 2nd place, Canada Wide Virtual Science Fair (2007) Affiliation: Canada Wide Virtual Science Fair (VSF) Year: 2007 Description: In order to measure the torque, the electric motor is suspended off the ground and a string is attached to the axel of the motor while the other end of the string is attached to different weights. The distance the motor lifts the weights off the ground is measured. Link: http://www.virtualsciencefair.org/2007/benn7b2/ |
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An electric motor uses electrical energy to produce mechanical energy. The reverse process, that of using mechanical energy to produce electrical energy, is accomplished by a generator or dynamo. Traction motors used on locomotives and some electric and hybrid automobiles often perform both tasks if the vehicle is equipped with dynamic brakes. Electric motors are found in household appliances such as fans, refrigerators, washing machines, pool pumps, floor vacuums, and fan-forced ovens. They are also found in many other devices such as computer equipment, in its disk drives, printers, and fans; and in some sound and video playing and recording equipment as DVD/CD players and recorders, tape players and recorders, and record players. Electric motors are also found in several kinds of toys such as some kinds of vehicles and robotic toys. For More Information: Electric Motors - K-12 Experiments & Background Information Source: Wikipedia (All text is available under the terms of the GNU Free Documentation License) |
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