An arc lamp takes 10 A at 50 V. Calculate the impedance of a choke of 1-ohm resistance to be…

An arc lamp takes 10 A at 50 V. Calculate the impedance of a choke of 1-ohm resistance to be connected in series with an arc lamp so that the lamp may be used on 200 V, 50 Hz supply. Use the data from the circuit diagram and the phasor voltage triangle and calculate the total active power and the power factor. AB – drop across arc lamp BC – drop across 1-ohm resistance of the choke CD – drop across the inductor BD – total drop across the choke