Explain in detail about what is star and delta three phase system ?

Star Connection (Wye connection)

• The star or Wyc connection of the three alternator windings is shown in Fig. I(a). This configuration is obtained by connecting one and of the three phase windings together.

• We can connect either R Y B or R’ Y’ B’ together, This common point is called as the Neutral point and it is denoted by N.

• The remaining three ends of the windings arc brought out for the external connections. These ends arc denoted by R-Y-B as shown in Fig. 1(b).

Delta Connection

• The delta or mesh connection of the three alternator windings is shown in Fig. 2.

• The delta or mesh configuration is obtained by connecting one end of winding to the starting end of the other winding such that it produces a closed loop as shown in Fig. 2.

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A.C. CIRCUITS TOPIC

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13. What is simple parallel AC circuits ? Explanation -electrical engineering
14. Resonance as applicable to simple RLC series circuit? effect on circuit performance
15. Explain three phase generation of voltage ? electrical engineering
16. Explain in detail about what is star and delta three phase system ?
17. Relation between phase voltage & line voltage in case of balanced star connected load
18. relationship between line current & phase current for delta connected 3 load
19. Relation between power consumed in a balanced star & delta connection

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