#### Transcript of NODAL AND MESH ANALYSIS

Nodal Analysis

• Technique based on systematic application of

KCL.

• Node voltages are used as the circuit variables.

• Important point when writing the expression for

current flow resistance is a passive element,

by the passive sign convention, current must

always flow from a higher potential to a lower

potential

circuit 1

circuit 2

circuit 3

**NODAL AND MESH ANALYSIS**

Mesh Analysis

Steps in analysing the circuit.

1. Clearly label all circuit parameters and distinguish the unknown parameters from the known.

2. Identify all nodes of the circuit.

3. Select a node as the reference node also called the ground and assign to it a potential of 0 Volts. All other voltages in the circuit are measured with respect to the reference node.

4. Label the voltages at all other nodes.

5. Assign and label polarities.

6. Apply KCL at each node and express the branch currents in terms of the node voltages.

7. Solve the resulting simultaneous equations for the node voltages.

• Technique based on systematic application of KVL.

• Mesh currents are used as the circuit variables.

• Mesh analysis is only applicable to a circuit that is planar

A planar circuit is one that can be drawn in a

plane with no branches crossing one another

Steps in analysing the circuit

1. Define a mesh current for each mesh

2. Write KVL equations with the voltages must

be expressed in terms of the mesh currents

3. Solve the equations

4. Compute the element currents and voltages

of interest from the mesh currents.

nodal

mesh

nodal

nodal

mesh

circuit 4

nodal

mesh

GROUP'S MEMBER

1. NUR ATHIRAH BINTI NOR RAHMAN (AE130170)

2. NORZAIDHATUL SYAZWA BINTI

JAMAL NASIR (AE130083)

3. NURSHAFINAH BINTI ABU BAKAR (AE130010)

FUN FACTS ABOUT ELECTRICITY

Electricity travels at the speed of light - more than 186,000 miles per second!

A spark of static electricity can measure up to three thousand (3,000) volts.

A bolt of lightning can measure up to three million (3,000,000) volts, and it lasts less than one second!

Electricity always tries to find the easiest path to the ground.

Electricity can be made from wind, water, the sun and even animal poop.

A 600 megawatt natural gas plant can power 220,000 homes.

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