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Three equal impedances (10 + j10) Ω are connected in delta across a three-phase balanced supply, the angle between the line current I­R and…

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Three equal impedances (10 + j10) Ω are connected in delta across a three-phase balanced supply, the angle between the line current I­R and line voltage VRY is given by
  • A45°
  • B75°
  • C15°
  • D0°
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Impedance = (10 + j10) Ω

In a delta connected balanced supply, the angle between the line current I­R and line voltage VRY is given by

? = (30 + θ)

Where θ is the impedance angle.

$(\theta = {\tan ^{ - 1}}\frac{X}{R} = 45^\circ )$

? = 30 + 45 = 75°