Cov txheej txheem:
Video: Yuav ua li cas koj xam lub cev muaj zog overload tam sim no?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Faib los ntawm qhov ntsuas tag nrho tam sim no los ntawm lub cev muaj zog npe. Qhov no yuav yog lub load factor rau lub lub cev muaj zog . Yog tias lub cev muaj zog tam sim no yog 22A thiab qhov ntsuas tag nrho tam sim no yog 20A, ces qhov load yam yog 22/20 = 1.1. Qhov no txhais tau tias lub cev muaj zog yog overloaded los ntawm 10%.
Ntxiv mus, yuav ua li cas koj xam tag nrho load tam sim no?
AC DC Puv Load Tam sim no xam cov qauv
- AC Loads (Hloov tam sim no):
- Lub cev muaj zog (KW)
- V = Voltage +/- 10% hauv Volt.
- I = Puv load tam sim no hauv Amps.
- Cos pi = power factor.
- KW = tso zis zog hauv Watts……. Txhua yam yog muab rau ntawm daim ntawv teev npe.
- Cos pi = power factor.
- KW = tso zis zog hauv Watts……. Tag nrho yog muab rau ntawm lub cev muaj zog lub npe phaj cov ntsiab lus.
Ib yam li ntawd, txhais li cas los ntawm 1 ampere? Ib ampere yog ib chav ntsuas ntawm tus nqi ntawm electron ntws los yog tam sim no nyob rau hauv ib tug hluav taws xob conductor. Ib ampere ntawm tam sim no sawv cev ib coulomb ntawm hluav taws xob nqi (6.24 x 1018 tus nqi thauj khoom) txav dhau los ntawm qhov tshwj xeeb hauv ib thib ob. Cov ampere muaj npe tom qab Andre Marie Ampere , Fabkis physicist (1775-1836).
Yog li ntawd, koj yuav teeb tsa lub overload li cas?
1.15, ib teeb tam sim no rau overload relay tuaj yeem raug tsa los ntawm 15% piv rau tag nrho-load tam sim no lossis rau qhov kev pabcuam amps (SFA) uas ib txwm qhia rau ntawm daim ntawv teev npe. Yog tias lub cev muaj zog txuas nrog lub hnub qub = 440 V 60 Hz lub overload relay ces yuav tsum tau teeb rau 3.1a.
Kuv yuav xam amps li cas?
Cov mis rau Amps yog Watts faib los ntawm Volts. Txhawm rau siv daim ntawv qhia, npog A nrog koj tus ntiv tes thiab siv daim ntawv qhia ntxiv xam ntawm W faib los ntawm V. Siv peb cov qauv vaj huam sib luag cov ntaub ntawv, 60 watts muab faib los ntawm 12 volts sib npaug 5 cov amps.
Pom zoo:
Yuav ua li cas koj ua lub cev muaj zog nrog lub roj teeb xaim thiab cov hlau nplaum?
Cov kauj ruam Sau koj cov ntaub ntawv. Koj tsis tas yuav muaj cov cuab yeej tshwj xeeb los ua homopolar lub cev muaj zog. Muab cov hlau nplaum rau ntawm qhov ntsia hlau. Siv cov theneodymiummagnet thiab muab nws lub taub hau ntawm cov phab ntsa ntub dej. Txuas cov ntsia hlau rau ib kawg ntawm lub roj teeb. Muab cov hlau tooj liab tso rau ntawm lub roj teeb. Ua kom tiav lub cev muaj zog
Lub cev puas tuaj yeem muaj lub zog tsis muaj zog muab qhov laj thawj?
Teb thiab piav qhia: Lub cev tsis tuaj yeem muaj lub zog tsis muaj zog. Qhov no yog vim hais tias tsuas yog txav cov khoom havemomentum, thiab ib yam khoom nyob rau hauv motion ib txwm haskinetic
Yuav ua li cas tshwm sim thaum koj sib tov ib tug muaj zog acid nrog ib tug tsis muaj zog puag?
Hom 2: thaum muaj zog acid / base reacts nrog lub hauv paus tsis muaj zog / acid yog hydronium thiab hydroxyl ions tam sim no nyob rau hauv sib npaug amt ces ntsev thiab dej yog tsim thiab lub zog tso tawm uas tsawg tshaj li 57 kj / mole vim lub dissociation ntawm lub tsis muaj zog acid / puag uas feem ntau endothermic
Tam sim ntawd yuav siv dab tsi yog tias koj cov khaub ncaws raug hluav taws lossis yog tias muaj tshuaj lom loj tshwm sim ntawm koj cov khaub ncaws?
Tam sim ntawd yuav siv dab tsi yog tias koj cov khaub ncaws raug hluav taws lossis yog tias muaj tshuaj lom ntau tshwm sim ntawm koj cov khaub ncaws? Koj mus ncaj qha rau da dej kev nyab xeeb thiab sawb ntawm tag nrho koj cov khaub ncaws
Lub zog zoo li cas yog lub teeb lub zog hloov dua siab tshiab kom lub tshuab xam zauv ua haujlwm?
Kab nyob rau sab saum toj ntawm lub tshuab xam zauv. Ua li cas lub zog yog lub teeb lub zog hloov dua siab tshiab kom lub tshuab xam zauv ua haujlwm? Lawv hloov lub teeb lub zog rau hauv hluav taws xob hluav taws xob. zaub mov