- #1
samaaa
- 48
- 0
hi guys i like this forum
if we have a transformer(star type),,has three phase(a,b and c) and has also neutral ,
let Vphase=220 R.M.S
if the neutral of this transformer is not grounding"neutral hasn't any contact with earth"
my question is:
if we put a voltmeter between the Earth and the phase "a"(or b or c) what the voltmeter read??
i discuss this question with my teacher in the college he said that the voltmeter will read value "220 V" but i said the voltmeter will read "0V" because the circuit is open,,
if we have a transformer(star type),,has three phase(a,b and c) and has also neutral ,
let Vphase=220 R.M.S
if the neutral of this transformer is not grounding"neutral hasn't any contact with earth"
my question is:
if we put a voltmeter between the Earth and the phase "a"(or b or c) what the voltmeter read??
i discuss this question with my teacher in the college he said that the voltmeter will read value "220 V" but i said the voltmeter will read "0V" because the circuit is open,,