Three similar coils, each having a resistance of 20 ohms and an inductance of 0.05 H are connected in (i) star (ii) Delta. to a 3-phase, 50-Hz supply with 400-V between lines. Calculate the total power absorbed and the line current in each case.
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152 Verify Rolle's theorem for the function f(x) = x2 - 4x + 10 on (0,4)
Step-by-step explanation:
152 Verify Rolle's theorem for the function f(x) = x2 - 4x + 10 on (0,4)152 Verify Rolle's theorem for the function f(x) = x2 - 4x + 10 on (0,4)152 Verify Rolle's theorem for the function f(x) = x2 - 4x + 10 on (0,4)
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Step-by-step explanation:
Given Three similar coils, each having a resistance of 20 ohms and an inductance of 0.05 H are connected in (i) star (ii) Delta. to a 3-phase, 50-Hz supply with 400-V between lines. Calculate the total power absorbed and the line current in each case.
- Phase Voltage Vp = 400 V
- Now phase impedance
- Zp = √R^2 + Xl^2
- = √R^2 + (2πfL)^2
- = √(20)^2 + (2 x 3.14 x 50 x 0.05)^2
- = √400 + 246.49
- = √646.49
- = 25.42 ohm
- Now phase current = Vp / Zp
- = 400 /25.42
- = 15.73 Amps
- Line current Il = √3 Ip
- = √3 x 15.73
- = 27.24 Amps
- So total power consumption
- P = 3 x (phase current)^2 x (phase resistance)
- = 3 x (15.73)^2 x 20
- = 14845.974 Watt
- = 14.84 kW
Reference link will be
https://brainly.in/question/29889540
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