Electrical Engineering - Three-Phase Systems in Power Applications - Discussion
Discussion Forum : Three-Phase Systems in Power Applications - General Questions (Q.No. 13)
13.
If in a Y-connected ac generator, each phase voltage has a magnitude of 90 VRMS, what is the magnitude of each line voltage?
Discussion:
11 comments Page 1 of 2.
Vipul said:
7 years ago
In star connection.
line voltage =1.732*phase voltage.
= 1.732*90,
= 155.88,
~156.
line voltage =1.732*phase voltage.
= 1.732*90,
= 155.88,
~156.
(2)
Jagabandhu sahani said:
1 decade ago
In star connection line voltage lead phase voltage by 30 degree.
Line voltage = 90*1.732 = 155.88.
It is correct answer.
Line voltage = 90*1.732 = 155.88.
It is correct answer.
Shoaib Iqbal said:
1 decade ago
Vphase(max) = Vr.m.s/.707.
= 90/.707.
Vphase(max = 127.29 v.
Now in star connected networks.
V(line) = 1.732*V(phase).
= 1.732*127.29.
= 220 v.
I think it is the correct answer.
= 90/.707.
Vphase(max = 127.29 v.
Now in star connected networks.
V(line) = 1.732*V(phase).
= 1.732*127.29.
= 220 v.
I think it is the correct answer.
(3)
PRASHANT SINGH said:
1 decade ago
In Y connection line voltage lead phase voltage by 30 degree.
And line voltage = Vl*1. 732.
And line voltage = Vl*1. 732.
T.Pandey said:
1 decade ago
In star connection Vline = 1.732 x Vphase
So, Vline = 1.732x90 = 156v(approx.)
So, Vline = 1.732x90 = 156v(approx.)
Samaya Sanjeevi said:
1 decade ago
In Y-connected system line voltage=sqrt(3)*phase voltage.
So VL=1.732*90=155.88=156V.
So VL=1.732*90=155.88=156V.
Sk saidulu said:
1 decade ago
In delta connected network,line and phase voltages are equal,where as line current = root 3 times of phase currents
90*1.732 = 156 v
90*1.732 = 156 v
Lavanya said:
1 decade ago
Line voltage=root 3 times of phase voltage in star connected, where as line currents and phase currents are equal.
In delta connected network,line and phase voltages are equal,where as line current = root 3 times of phase currents.
In delta connected network,line and phase voltages are equal,where as line current = root 3 times of phase currents.
Tarnjeet Singh Seehra said:
1 decade ago
90*1.732 = 156 v
Sundar said:
1 decade ago
90 * sqrt(3) = 155.88 = 156.
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