finalexamFall95 - Final Examindfion.Foraspecirnen=,n 1.234...

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Unformatted text preview: . Final Examindfion .Foraspecirnen=ofstee1the8teiometzeltponent,n 1.234 Thelma-losses forth: specimen are tabulated below: - Frequency"? Hut: Density Iron Loss 25 Hz. '1 5 Tests 80 watts 60Hz. 1.1Testa 110 watts Fiedfiehysteresrsandeddy—currehtlmfortbespemmenat SDHz. and 1 Tesla. /ASDKVA,120I4SDV finglephmuep-untransformerpeiforrueafitumaximum offinmyatfifiaofttsratedK‘I-‘Aandtmrtypowerfeotor 'Theooreloeeiellm .. . atrtandrtttttsooz+fi060hmphaee DetermtnetherotoreunettttfthemtattonallotStslfiflwatts 1-‘HP'= 746wetts. dipole, 60th., Y-eumeeted. 3-phase induction motor develops. intuit-mm torque lonSQN-mataspeedofflflrpm Determihethetorque developedbythemotor wheuitoperatesataspeedofllfimm. ti AlmGKVAEItBD? SGHLY-eonumdB-phasealwuitorhasanarmature mdflfif" ' hermenytwoofitsimee AMeuneetofitSAettberated queedpmduees ashort-ououuunreutofMDAanduopcn-Ctmthnevolmgeof tlmvfllls. CatcuhtethepumtvotflsemdauonatfuflloadaodOTWPflemg. d 3.2%? Y—connecteds-phue, synchronous motorhaeasyuchronousreaotanoeof entrusperphaseanduegitgtflemreremtance hammmmmm mmatfl.3pflam_ gH'dhe-plotter ”hymemmmsuuemud whflethemflymwaemmsedhm determmetheaunlture cunentandteepowert’lctar. , . _. _ .. 1.: .' . p _' i" Y—oooneoted. round-armor. synchronoue nioipr has an amature‘vtmdin-g impedaneeofOfi-I-ja ohmslphase Themot'ot' tatteeneuntentof t lDAatflSpfieadmgwheooperaungatatretmnfieldeurreuL Theloedtsgmdnafly 3‘— ' increasedudfii themotordevelops themammtorquewhflethefieldeunentrs held eonstant. Determine the new line” current, the power footer and the thfi- developed by: the motor. W” ...
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