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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 — OEM3-RO-ELECTROTEHNICA” contains 13 questions across 1 collection.

Learning

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Sample questions and answers

These examples come from the published collection. Choose Learning to study questions in sequence, or Exam to check your knowledge.

O bobina de inductivitate L=25mH este parcursa de curent I=10A. Sa se determine energia campului magnetic al bobinei

One correct answer

  • W=1,40J
  • W=1,02J
  • W=1,25J✓ Correct answer
  • W=1,45J
Un generator de curent alternativ trifazat alimenteaza cu tensiuni simetrice de 3x380/220V un receptor montat in triunghi, cu impedantele: Z12 = Z23 = Z31 = 12+16j. Sa se determine valoarea efectiva a curentului pe faze.

One correct answer

  • I=19A✓ Correct answer
  • I=14A
  • I=21A
  • I=17A
Supratata echipotentiala este:

One correct answer

  • suma potentialelor punctelor din campul electric;
  • orice suprafata ce trece prin trei puncte necoliniare din campul electric;
  • totalitatea punctelor cu acelasi potential;✓ Correct answer
  • suprafata determinata de intersectia traiectoriilor a doua sarcini electrice ce se deplaseaza sub actiunea fortelor electrice.
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
Teorema lui Ampere se enunta astfel: Tensiunea magnetica in lungul firului unei curbe inchise C cu elementul de curba dl, este egala cu:

One correct answer

  • solentia care inlantuie acea curba;✓ Correct answer
  • fluxul magnetic din suprafata S ce se sprijina pe curba C;
  • inductia magnetica multiplicata cu reductanta;
  • intensitatea campului magnetic in lungul curbei.

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