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A coil having resistance of 7 ohm and. inductance of 31.8 mH is connected to 230 v, 50hz supply.
calculate 1) The circuit current
2) Phase angle
3) power factor
4) power consumed
Asked by a.muqtadir25 | 23 Mar, 2019, 03:24: PM
Expert Answer
Impedence Z =
Current = V / Z = 230/7.1 = 32.4 A
Phase angle Φ= tan -1 (Lω / R) = tan -1 ( 3.8×10-3 ×2π×50 / 7 ) = tan-1 (0.170) ≈ 9.7 °
power factor = cosΦ = cos (9.7) = 0.986
Power consumed = V × I × cosΦ = 230 × 32.4 × 0.986 = 7348 W
Answered by Thiyagarajan K | 23 Mar, 2019, 05:17: PM
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