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Question
Q10. A. With the aid of delta and star connection diagrams, state the basic equation from which the delta – star and star – delta conversion equation can be derived. (6)
B. Three batteries A, B and C have their negative terminals connected together, between the positive terminals of A and B there is a resistor of 0.5 ohm and between B and C there is a resistor of 0.3 ohm.
Specifications of the three batteries are given below:
Battery A 105 V, Internal resistance 0.25 ohm
Battery B 100 V, Internal resistance 0.2 ohm
Battery C 95 V, Internal resistance 0.25 ohm
Determine the current values in the two resistors and the power dissipated by them. (10)
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