File:AC MOTORS.webm

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AC_MOTORS.webm(WebM audio/video file, VP8/Vorbis, length 36 min 50 s, 640 × 480 pixels, 512 kbps overall, file size: 134.84 MB)

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English: AC MOTORS - Department of Defense 1969 - PIN 39947 - AC MOTORS ARE SHOWN IN VARIOUS APPLIANCES AND ELECTRONIC EQUIPMENT TO EMPHASIZE THEIR WIDE USE AND IMPORTANCE. AN ACTUAL MOTOR IS DISASSEMBLED TO POINT OUT EACH PART AND THE SIMPLICITY OF CONSTRUCTION. THE PRINCIPLE OF OPERATION IS DEMONSTRATED, POINTING OUT THE MAGNETIC FIELD AND MAGNETIZATION OF THE ROTOR. A ROTATING MAGNETIC FIELD IS PRODUCED THROUGH A DEMONSTRATION. INDUCTION FROM ROTATING FIELD TO WIRE LOOPS IS DEMONSTRATED, FOLLOWED BY EXPLANATION OF HOW THE ROTOR IS MAGNETIZED. CONCLUDES WITH A DEMONSTRATION OF SLIPPAGE AND ITS RELATIONSHIP TO INTERNAL AND EXTERNAL LOADING, AND AN EXPLANATION OF A TYPICAL TORQUE CURVE.
Date Taken in 1969, Upload date: 19 May 2010
Source YouTube: AC MOTORS – View/save archived versions on archive.org and archive.today
Author PublicResourceOrg

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File history

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Date/TimeThumbnailDimensionsUserComment
current12:37, 18 May 201836 min 50 s, 640 × 480 (134.84 MB)Vislupus (talk | contribs)Imported media from https://www.youtube.com/watch?v=_-WQZ1SGqi4

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Transcode status

Update transcode status
Format Bitrate Download Status Encode time
VP9 480P 365 kbps Completed 02:57, 16 August 2018 29 min 27 s
Streaming 480p (VP9) 290 kbps Completed 06:22, 17 December 2023 5.0 s
VP9 360P 245 kbps Completed 02:50, 16 August 2018 22 min 0 s
Streaming 360p (VP9) 170 kbps Completed 20:24, 17 December 2023 4.0 s
VP9 240P 178 kbps Completed 02:46, 16 August 2018 18 min 34 s
Streaming 240p (VP9) 103 kbps Completed 08:19, 9 December 2023 3.0 s
WebM 360P 503 kbps Completed 12:56, 18 May 2018 19 min 16 s
Streaming 144p (MJPEG) 931 kbps Completed 12:01, 29 October 2023 53 s
Stereo (Opus) 72 kbps Completed 01:01, 13 November 2023 37 s
Stereo (MP3) 128 kbps Completed 02:24, 29 October 2023 1 min 8 s

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