



How can you verify the correctness of a star-delta transformation?
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- Can star-delta transformation be applied to circuits containing active devices like transistors or operational amplifiers?
- Explain the limitations of using purely resistive equivalents for AC circuits when applying star-delta transformation. How does the concept of power invariance apply to star-delta transformation?
- Explain the duality between star and delta networks.
- Solve for the equivalent delta impedance of a given star impedance network. How does star-delta transformation relate to network theorems like Thevenin's or Norton's theorem?
- If yes, how would you handle the transformation of impedances at different frequencies?
- Explain the phase shift introduced by a delta-star or star-delta transformer connection. How does the presence of harmonics in the supply voltage affect star and delta connected loads differently?
- Consider a fault in a star connected load. How would its equivalent delta connection behave?
- Solve for the equivalent star impedance of a delta network containing resistors and capacitors.
- Design a set of practice problems covering various aspects of star-delta transformation, ranging from basic calculations to circuit analysis applications.
- Solve for the equivalent star impedance of a given delta impedance network.
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