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Electrical Network Quiz

A detailed illustration depicting electrical networks, power flow diagrams, and transformers, emphasizing concepts like neutral grounding and voltage drop.

Electrical Network Quiz

Put your knowledge of electrical networks to the test with this engaging quiz! Whether you're a student, a teacher, or someone simply interested in electrical engineering, this quiz challenges your understanding of key concepts and terminology.

Topics covered include:

Neutral treatment in electrical networks
Power loss due to Joule effect
Transformer winding connections
Voltage drop calculations

8 Questions2 MinutesCreated by CalculatingCurrent247

Tratarea neutrului in retelele electrice prin resistor are avantajul ca

A) se asiguta o selectivitate mai buna a liniei cu defect

se asigura valori simetrice ale tensiunilor pe cele 3 faze

Consumatorii pot fi in continuare alimentati in caz de defect

Pierderile de putere activa in liniile electrice, datorate efectului Joule, fac parte din categoria:

Pierderilor comerciale

Pierderilor tehnice

consumului propriu tehnologic

In etapa ascendent din metoda “ ascendent – descendent” se calculeaza:

circulatia de puteri pe laturi

Atat tensiunile cat si circulatia de putere pe laturi

Tensiunile

Conexiunea infasurarilor transformatoarelor pe partea de joasa tensiune :

este de tip triunghi

Se creeaza prin dispozitive speciale

este de tip stea

Pentru o linie electrica avand impedanta Z = R + jX pein care circula curentul inductiv I = Ia – jIn expresia caderii de tensiune fazoriala este :

ΔV = Xia – jRIr

ΔV = Ria + jXIr

ΔV = Ria – jXIr + j(Xia – jRIr)

Neutrul retelelor electrice de inalta tensiune

Se leaga direct la pamant

Se traseaza prin bobina de stingere

Functioneaza izolat

Caderea de tenisune fazoriala pe o linia electrica cu un singur consumator reprezinta:

Raportul dintre puterea complexa la consumator si curentul complex prin linie

Diferenta dintre modulele tensiunilor la cele doua capete

produsul dintre impedanta longitudinala si curentul complex prin linie

Neutrul retelelor electrice de joasa tensiune

functioneaza izolat

Se leaga direct la pamant

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