EL – 1001 Linear Circuit Analysis - LAB
Linear Circuit Analysis
(EL-1001)
LABORATORY MANUAL
Spring 2025
LAB 05
VERIFICATION OF SUPERPOSITION THEOREM
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STUDENT NAME
ROLL NO
SEC
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FACULTY'S SIGNATURE & DATE
MARKS AWARDED:
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NATIONAL UNIVERSITY OF COMPUTER AND EMERGING SCIENCES (FAST-NUCES), KARACHI
NUCES, KARACHI
Spring-2025
EL – 1001 Linear Circuit Analysis - LAB
Lab Session 05: VERIFICATION OF SUPERPOSITION THEOREM
OBJECTIVE:
• To verify superposition theorem in DC circuit.
EQUIPMENT:
• DC Power supply 11V (two)
• DMM
• Resistors: 1kΩ (two), 1.2k Ω, 3.3k Ω
BACKGROUND:
The superposition theorem allows us to calculate the combined effects of a multi-source
circuit by summing the individual effects of each source acting alone. Particular attention must
be paid to current directions and voltage polarities when applying superposition. The circuit
has two voltage sources, VS1 and VS2. According to superposition theorem, voltages V1, V2 and
V3 and currents I1, I2, and I3 can be calculated by taking their values due to individual source
acting alone, and then adding them. The voltage source not being considered is to be replaced
with a short circuit.
It is important to note that you must remove the power supply before you replace it with a
short circuit. Never short-circuit a functioning power supply. Also, pay attention to the polarity
of voltages due to each source so that you algebraically sum them to get the totals.
PROCEDURE:
1. Use superposition principle for the circuit in Figure 1 to calculate components of V 1, V2, V3
and V4 due to each source acting alone, and record your results in Table - I. Note that V11 is
the component of V1 due to Vs1 acting alone; V12 is the component of V1 due to Vs2 acting
alone, etc. Similarly, calculate components of I1, I2, I3 and I4 due to each source acting alone
and record your results in Table - I.
2. Complete Table - I by calculating the actual values of V1, V2, V3 and V4, and I1, I2, I3 and I4
when both VS1 and VS2 are active (ON).
NUCES, KARACHI
Spring-2025
EL – 1001 Linear Circuit Analysis - LAB
3. Connect the circuit in Figure 1. Remove power supply VS2 and replace it with a short circuit.
Then measure the voltages V11, V21, V31 and V41 and currents I11, I21, I31 and I41 record them
in Table-II, in the appropriate column.
4. Repeat above step, replacing VS1 with a short circuit and connecting VS2 in the circuit. This
will enable you to measure and record V12, V22, V32 and V42 and currents I12, I22, I32 and I42.
5. Finally connect the complete circuit with both sources active. Measure and record the actual
voltages V1, V2, V3 and V4 and currents I1, I2, I3 and I4. Compare your measured and calculated
data.
NUCES, KARACHI
Spring-2025
EL – 1001 Linear Circuit Analysis - LAB
CALCULATIONS:
NUCES, KARACHI
Spring-2025
EL – 1001 Linear Circuit Analysis - LAB
NUCES, KARACHI
Spring-2025
EL – 1001 Linear Circuit Analysis - LAB
NUCES, KARACHI
Spring-2025
EL – 1001 Linear Circuit Analysis - LAB
Lab Report:
(It is recommended to write Lab Report in bullet Form. Attach extra sheet if needed.)
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NUCES, KARACHI
Spring-2025
EL – 1001 Linear Circuit Analysis - LAB
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NUCES, KARACHI
Spring-2025
EL – 1001 Linear Circuit Analysis - LAB
Assessment Rubrics for LCA Lab 5
Method: Lab reports and instructor observation during Lab sessions
Outcome Assessed:
a. Ability to conduct experiments, as well as to analyse and interpret data (P4/PLO 4).
b. An ability to work effectively as an individual or in a team. (A5/PLO 9).
c. Ability to demonstrate the use of the techniques, skills, and modern engineering tools necessary
for engineering practice (P4/PLO 5).
d. An ability to design a solution for an open-ended lab with appropriate considerations for public
health and safety, cultural, societal, and environmental factors. (C5/PLO3)
Performance
Does not meet expectation
(0-1)
Meets expectation
(2-3)
Exceeds expectation
(4-5)
Applicable Marks
/Not
Applicable
(NA)
1. Realization of
Experiment [c]
Incapable
of
selecting Needs guidance to select relevant Selects relevant equipment to the
relevant equipment i.e., equipment i.e., power supply, experiment i.e., power supply,
power supply, DMM and
DMM and resistors to the DMM and resistors, develops
resistors to conduct the
experiment,
equipment experiment and to develop setup diagrams of equipment
connections
or
wiring equipment connection or wiring connections or wiring without any
diagrams.
diagrams.
assistance.
Distracts or discourages other Cooperates with other group Actively engages and cooperates
2. Individual or
group
members
from members in a reasonable manner, with other group members in an
Teamwork [b]
conducting the experiment or or as an individual, perform the effective manner, or actively
look
discouraged
or experiment in a manner guided. perform an experiment in an
distracted as an individual.
organized
and
professional
manner as an individual.
Unable to use DMM to check Calibrates equipment i.e., the Does proper calibration of
3. Conducting
the resistance, voltages, and DMM properly and measures the equipment,
measures
all
Experiment [a]
current values; unable to resistances currents and voltages resistances,
voltages,
and
apply superposition principal with
some
error,
uses currents accurately, expertly uses
to perform experiment.
superposition
principal
to superposition principal to obtain
perform experiment.
voltage and current values
and
carefully
4. Laboratory Safety Disregards safety rules and Observes safety rules and Respectfully
procedures with minor deviation. observes safety rules and
procedures.
Rules [c]
procedures
5. Data Collection
Does not know how to plan Plans data collection to achieve Plans data collection to achieve
[a]
objectives, experimental
objectives,
data collection to achieve experimental
experimental goals; voltage measures the current and measures all currents and
and current values are not voltages with minor error, collects voltages across the resistors
measured properly, data complete data with minor error. accurately and conducts an
orderly and a complete data
collected is incomplete and
collection.
contain errors.
6. Data Analysis [a] Unable
to
apply Applies superposition theorem to Accurately applies superposition
superposition theorem for calculate the theoretical values; theorem for calculating values;
calculating the required data; attempts to correlate between correlates experimental results to
theoretical
values;
no attempt to correlate measured and calculated values; known
to
account
for accounts for measurement errors
experimental results with attempts
errors
and and parameters that affect
known theoretical values; measurement
that
affect experimental results.
incapable
of
explaining parameters
experimental results.
measurement errors.
7. Design of
Unable to design the Able to design and partially Able to design and implement the
Experiment [d]
complete solution of open- implement the complete solution complete solution of open-ended
ended problem with safety, of open-ended problem with problem with safety, health and
related
health, and environment safety, health, and environment environment
related considerations.
considerations.
related considerations.
Total
NUCES, KARACHI
Spring-2025