Electrical Engineering - Three-Phase Systems in Power Applications - Discussion
Discussion Forum : Three-Phase Systems in Power Applications - General Questions (Q.No. 11)
11.
A three-phase generator is connected to three 90 
load resistors. Each coil generates 120 V ac. A common neutral line exists. How much current flows through the common neutral line?
load resistors. Each coil generates 120 V ac. A common neutral line exists. How much current flows through the common neutral line?Discussion:
21 comments Page 2 of 3.
Dilip said:
1 decade ago
If phases are equal then neutral is zero.
Gkakar said:
1 decade ago
But he didn't write in question that a balance three phase.
Mauli said:
1 decade ago
v = 3*120.
r = 90*3
i = v/r = 1.33.
r = 90*3
i = v/r = 1.33.
Chandrima said:
10 years ago
As it is balanced neutral current will be zero.
Neelakanta said:
9 years ago
Nice and useful explanation. Thanks a lot.
Bablu said:
9 years ago
@Gkakar.
In this question there is 3 phase generator is connected to three 90 ohm load resistors and each phase carry 120v so it's a balance 3 ph. In three phase balance circuit, the neutral current is zero.
In this question there is 3 phase generator is connected to three 90 ohm load resistors and each phase carry 120v so it's a balance 3 ph. In three phase balance circuit, the neutral current is zero.
Santos malik said:
9 years ago
Ans is 1.33 because hear 3ph and 3 loads does not balance load is maximum than the phase.
(1)
Ayush Kumar said:
9 years ago
For a balance 3-phase network neutral current is always zero.
Parth said:
8 years ago
Balance condition in the 3-phase generator.
Ir + Ib + Iy = 0.
Thus current in the neutral wire is equal to zero.
Ir + Ib + Iy = 0.
Thus current in the neutral wire is equal to zero.
Himanshu said:
7 years ago
Neutral current of any 3 phase balanced circuit is always zero.
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