Question27. A star-connected load consists of three identical coils each of resistance $30 \Omega$ and inductance 127.3 mH .
If the line current is $5,08 \mathrm{~A}$, calculate the line voltage if the supply frequency is 50 Hz .

Studdy Solution
Calculate the line voltage from the phase voltage.
For a star connection, the line voltage $V_L$ is related to the phase voltage $V_p$ by:
$$V_L = \sqrt{3} \times V_p$$
$$V_L = \sqrt{3} \times 254$$
$$V_L \approx 1.732 \times 254$$
$$V_L \approx 440 \, \text{V}$$
The line voltage is:
$\boxed{440 \, \text{V}}$