Electrical Engineering - Branch, Loop and Node Analyses - Discussion

Discussion Forum : Branch, Loop and Node Analyses - General Questions (Q.No. 1)
1.
Find the node voltage VA.

6 V
12 V
4.25 V
3 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
39 comments Page 4 of 4.

Krishna said:   1 decade ago
((va-12)/49)+(va/24)+((va-6)/80)=0
((va-12)(1920)+(va)(3920)+(va-6)(1176))/94080=0
va(7016)-30096=0
va=30096/7016
va=4.28

Kirthi said:   1 decade ago
For nodal analysis voltage source must be converted to current source right?

Madhu said:   1 decade ago
I am not able to you understand. Can you explain me clearly? Please.

Ganesh said:   1 decade ago
@Krishna.

Is right according to nodal analysis. The algebraic sum of currents in a network of conductors meeting at a point is zero.

Here we take i=v/r.

Ashiwani kumar said:   1 decade ago
Applying nodal analyses at node A.

I1 = (I2+I3).

(12-Va)/49 = Va/24+(Va-6)/80.

(Va = 4.289).

Nagaraju N L said:   1 decade ago
I can't understand please solve the problem step by step please.

Sam said:   1 decade ago
(VA-12)/49+VA/24+(VA-6)/80 = 0.

0.02(VA-12)+0.04VA+0.0125(VA-6) = 0.

VA(approx) = 4.3v.

Ram said:   10 years ago
Can you me proper sign convention in nodal analysis?

Ram said:   10 years ago
Sometimes V-12, sometimes 12-V what does it refer?


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