Question

anyone with aclue on how to manupulate nodal analysis in alternating currents

Answer 1

Could you give the circuit?It is difficult to explain without specific circuit diagram...

Answer 2

Nodal Analysis for AC Circuit

step 1: label all nodes

step 2: make an assumption about the direction of current flowing in each node, doesn't need to be correct, just consistent. (draw arrows on each path (not node) which way you guess the current is flowing)

step 3: express the current sources as complex numbers, i.e. encode the phase into the value

step 4: write 0 = the sum currents flowing in (+ve) and out (-ve) of nodes with respect to the voltage difference, impedance and current direction of each node (BE CONSISTENT).

i.e. current flowing from V1 to V2 would be (v1 - v2) / -5j

step 5: doing step 4 repeatedly should form X equations with X unknowns which can be solved simultaneously

ALWAYS BE CONSISTENT WITH CURRENT DIRECTION, SIGN (+ve or -ve) AND WHICH SIDE OF THE EXPRESSION YOU WRITE THE TERMS ON! SERIOUSLY YOU CAN NOT GET THIS QUESTION CORRECT IF YOU DON'T

Answer 3

CONVERT THE CIRCUIT ELEMENT VALUES WHICH ARE GIVEN IN THE QUESTION INTO PHASOR DOMAIN AND THEN YOU CAN USE REGULAR DC ANALYSIS METHODS TO SOLVE THE QUESTION.......

Answer 4

REFER TO THE BOOK FUNDAMENTALS OF ELECTRIC CIRCUITS BY ALEXANDER FOR SIMILAR PROBLEMS.