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If one lamp connect between two phases it will glow or not?
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Answer Posted / umar kamboh
Suppose a bulb operate at 415 volts. And there is three phase system (three phases have same voltage magnitude but 120 degree apart). The line-line voltage b/w any two phases is 415 volts (two phases have same magnitude but they will be 120 degree apart i.e 0,120 or -120).. ..The current b/w two point flow either when there is potential difference or there is phase difference (even when voltage magnitude is same).In our case (Bulb with two phases) second condition is full-filled.Hence the bulb will glow and then become dark and then glow (i.e it will blink).but remain glow for long time and will become dark for a small time (as compare to glow timing).
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