02171ngm 2200445Ia 450 991055719620332120120926151047.0(CKB)4920000000392624(FOD)100040298(EXLCZ)99492000000039262440298Infobase40384sInfobase20240702c2007uuuu -u- vengurcnannnuuuuucrdamediacrrdacarrierDC motors /Video Education AustralasiaNew York, N.Y. Infobase[2009], c20071 streaming video file (25 min.) sd., col., digital file. +instructional materials (online)Direct Current: Understanding DC ElectricityElectricity and Magnetism (4:20) -- Magnetism and Movement (3:05) -- DC Motors: Useful Motion (4:18) -- How to Make a DC Motor (2:54) -- DC Motors: Design Improvement (4:38) -- Applications of DC Motors (4:57)Showing how interactions between magnetic fields lead to the production of motion, this program introduces viewers to the inner workings of DC motors. Topics include the work of Hans Christian Oersted, the creation of the first electric motor by Michael Faraday, and the rules for predicting field direction and forces on current carriers. The construction of a simple DC electric motor is shown with helpful graphics and 3-D animation sequences explaining the purpose of the commutator and other components of a DC motor. Also studied are various applications of DC motors, versions of brushless DC motors, and the Right Hand Slap Rule.Direct current.ElectricityStudy and teachingElectricityMagnetismEducational films.Internet videos.Videorecording.localElectricityStudy and teaching.Electricity.Magnetism.Films for the Humanities & Sciences (Firm)Video Education Australasia.AzPhAEMVIDEO9910557196203321DC Motors2826761UNINA