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ECA LAB 11-FA20-BEE-033 Arslan Shabeer
Electric Circuits Analysis II (COMSATS University Islamabad)
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Open Ended Lab 1
Lab 11: Experimental Validation of Mesh Analysis
Method
Pre-Lab Task
Students should solve the circuit shown in figure 8.1 using mesh analysis and calculate
all the mesh currents. The values of currents through and voltages across all the
resistances should also be calculated.
In Lab
Objective
•
•
To implement the Mesh Analysis method in lab
To verify that measured values of branch voltages and currents are comparable to the
values obtained by solving the circuit using mesh analysis method
Task 1:
Calculation
Table:
Calculated results
Resistance
values(Ω) Voltage
(V)
Simulation Results
Current
(A)
Voltage
(V)
Current
(A)
%age Difference
between calculated
and measured
values
R1 =
0.4198
4.198
0.41985
0.0041984
0.011%
R2 =
4.579
4.579
4.58016
0.0045801
0.021%
R3 =
0.3816
0.3816
0.38168
0.0003816
0.0209%
R4 =
0.3816
0.3816
0.03816
0.0003816
0.0207%
R5 =
0.62322
1.326
0.62334
0.0013262
0.012%
R6 =
4.3758
1.326
4.37666
0.0013262
0.018%
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Simulation
Post lab
Questions:
•
What is the difference between mesh and loop?
Loop and mesh both are a part of a circuit. A loop is any closed path through a circuit
where no node quite once is encountered. A mesh is a closed path during a circuit with no
other paths inside it.A mesh is a loop that has no other circuit paths inside it.
•
What is super mesh? Does the circuit in figure 11.1 contain any super mesh?
Supermesh If a current source exists between two contiguous meshes, the two meshes
are collapsed into a single mesh called a supermesh, and the current source and any
elements connected in series with it removed. However, KVL must still be satisfied
within a supermesh using the old mesh current labels.
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Critical Analysis/Conclusion
In this lab experiment I came to know about
• how to use mesh analysis to solve a circuit.
• How to find current by using mesh analysis.
• What is difference between mesh and a super mesh
• A more comprehended application of KCL.
Lab Assessment
Total (10)
Pre-Lab
(1)
In-Lab (5)
Attendan
ce/Task
Implementation/
Procedure/Resul
ts
Post-Lab (4)
Data
Presentation
Data
Analysis
Writing
Style
Comments:
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