OEM3-RO-ELECTROTEHNICA

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OEM3-RO-ELECTROTEHNICA
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About this collection

The ANR bank contains many sets with original names and codes, including navigation, safety and equipment topics. Select a module by name or use question search.

“ANR — Electrotehnica-OEM3 — OEM3-RO-ELECTROTEHNICA” contains 12 questions across 1 collection.

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Legea conservarii sarcinii electrice se exprima:

One correct answer

intensitatea curentului electric de conductie care iese dintr-o suprafata S este egala cu viteza de scadere a sarcinii electrice adevarate continute in interiorul suprafetei;✓ Correct answer
intensitatea curentului electric de conductie care iese dintr-o suprafata S este egala cu sarcina din suprafata respectiva;
intensitatea curentului electric de conductie care iese dintr-o suprafata S este egala cu raportul dintre tensiune si rezistenta;
intensitatea curentului electric de conductie care iese dintr-o suprafata S este dependenta de natura mediului electric.

Campul electric uniform este:

One correct answer

campul care are in toate punctele aceiasi intensitate electrica si liniile de camp paralele;✓ Correct answer
campul determinat de sarcini punctiforme;
campul determinat de sarcini uniform distribuite;
campul electric determinat de sarcini punctiforme si uniform distribuite.

Curentul de scurtcircuit al unui acumulator este ISC=40A. Legand la bornele acumulatorului o rezistenta R=3ohm, curentul debitat de acumulator are valoarea I=2,5A. Tensiunea electromotoare E a acumulatorului este:

One correct answer

E=6V
E=14V
E=8V✓ Correct answer
E=10V

Printr-un conductor rectiliniu foarte lung, de sectiune neglijabila circula un curent de intensitate I=50A. Sa se calculeze intensitatea campului magnetic H la distanta d=0,8m de axa conductorului,mr=1,01

One correct answer

H=7,09
H=9,95✓ Correct answer
H=12,41
H=10,12

Armaturile unui condensator intre care se aplica diferenta de potential se incarca cu:

One correct answer

potentiale ridicate;
camp electric neomogen;
sarcini electrice negative libere;
sarcini electrice egale si de semn contrar.✓ Correct answer

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