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This document summarizes an experiment on determining unknown node voltages in a DC circuit using nodal analysis. The circuit contains two voltage sources, one variable and one fixed at 5V, connected to three 1kΩ resistors. Node voltages were measured at various settings of the variable source and calculated using nodal analysis. The average error between measured and calculated voltages was 0.056V, showing good agreement between measurement and calculation. Nodal analysis accurately determined the unknown node voltages in the circuit.

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Arif Shishir
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435 views3 pages

Een 4

This document summarizes an experiment on determining unknown node voltages in a DC circuit using nodal analysis. The circuit contains two voltage sources, one variable and one fixed at 5V, connected to three 1kΩ resistors. Node voltages were measured at various settings of the variable source and calculated using nodal analysis. The average error between measured and calculated voltages was 0.056V, showing good agreement between measurement and calculation. Nodal analysis accurately determined the unknown node voltages in the circuit.

Uploaded by

Arif Shishir
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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IUBAT—International University of Business Agriculture and Technology

EXPERIMRNT NO: - 04
Experiment Name: Determination of Unknown node voltage of a D.C.
circuit and verify it by Nodal analysis method
Submitted By:
Name : Rakibul Hasan Dihan
ID : 20203038
Section :C
Serial : 35 (Group: 5 )
Course Code : EEN 184
Date : 14/06/2022

Submitted To:
Dr.Md.Rukonuzzaman
Associate Professor
International University of Business Agriculture and Technology
PhD ( Yamaguchi University , Japan )
MS (UTM , Malaysia) , BSc ( BUET )
1. Experiment Name: Determination of Unknown node voltage of a
D.C. circuit and verify it by Nodal analysis method.

2. Objective:

Voltage is the potential difference of two terminal in a system. Voltage is supplied by


voltage source. In a system, voltage is same for paranal connection but it is different
for series connection. In this experiment, two voltage sources have been used. One is
variable voltage source and another is fixed 5V voltage source.

3. Connection diagram:

Fig: Diagram of circuit

4. EQUIPMENTS REQUIRED: -

1.Variable D.C. power supply


2. Resistor: 3x 1KΩ
3. Connecting wire
4. Multimeter
5. Project Board
6. Ammeter

2
5. Experiment Data:

VA = E1 Error = VB
Sl VB
(Volt) VB (Calculated) (Measured)- VB
no (Measured)
(Calculated)
1 6 3.70 3.67 0.03
2 8 4.38 4.33 0.05
3 10 5.06 5.00 0.06
4 12 5.73 5.67 0.06
5 14 6.41 6.33 0.08

6. Result:
The average error value is 0.056V. It is almost ignorable. For the first case, we get
3.70V for measured from the circuit and the calculated voltage is 3.67V.

7. Mathematical Calculation:
For the above circuit,
(VB / R2) = ((EA - VB) / R1) + ((EB - VB) / R3)
Value of all the resistors used in the circuit is 1K ohm. Simplifying the circuit:
VB = (VA + VC) / 3
Now, for the 6V source:
VB = (6+5) / 3 = 3.67V (Calculated)

8. Discussion:
In this experiment, we have measured the value of the resistor using the voltmeter and
the value is almost same for calculated value. The value of error is ignorable. And the
unknowne node voltage has been determined.

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