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Consider the transformer connections in a part of a power system shown in the figure given below. The nature of transformer connections and phase shifts are indicated for all but one transformer.
Which of the following connections, and the corresponding phase shift θ , should be used for the transformer between A and B?
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- Star – Star (θ = 0°)
- Star – Delta (θ = – 30°)
- Delta – Star (θ = 30°)
- Star – Zigzag (θ = 30°)
Correct Option: A
Equal phase shift of points A and B with respect to source from both bus paths.
