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If 3-phase balanced source in the given figure delivers 1500 W at a leading power factor of 0.844, then value of ZL (in ohm) is approximately
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- 90 ∠ 32.44 °
- 80 ∠ 32.44 °
- 80 ∠ – 32.44 °
- 90 ∠ – 32.44 °
Correct Option: D
We know, 3VP IP cos θ = 1500
| ⇒ 3. |  |  | . | | | cos θ = 1500 | ||
| √3 | √3 ZL |
| ⇒ ZL = | ||
| 1500 |
| = | = 90 Ω | |
| 1500 |
and θ = ∠– cos-1 (0.844)
= ∠– 32.44° [negative indicates lagging]
