BPB22303 LABORATORY 2
ANALYSING AC POWER IN A TWO PORT NETWORK
Task 1
(a). For the two-port network in Figure 1, determine the Y-parameters, given that R1
= 3.9 KΩ and R2 = 2 KΩ . Show the diagram for each calculation clearly. Complete
this task before proceeding to task 1(b).
(b). Construct the circuit in Figure 1. Based on the calculation method in Task 1(a),
determine the Y-parameters using Multisim Simulation. Record your results in Table
1.
Task 2
(a). The two-port network is connected to 5Vpp 50 KHz supply and the load as shown
in Figure 2. If the load is inductive with R = 1 KΩ and L = 1 mH as in Figure 3. Measure
the supply voltage and the load voltage simultaneously on the oscilloscope of your
Multisim Simulation. Adjust the scale until you can determine the phase angle between
the two voltages. Record your results in Table 2.
(b). For power factor correction, suggest a suitable value of component to be used
to improve the power factor and justify your answer. (Prove it through the calculation
and simulation).
1|Page
BPB22303 LABORATORY 2
Figure 1: Symmetrical T-Network [A]
Figure 2
Figure 3: The load
2|Page
BPB22303 LABORATORY 2
Results
Table 1
Parameters
Calculation
Simulation
Y11
Y12
Y21
Y22
Table 2
Parameters
Supply voltage
Load voltage
Phase angle
Power factor
3|Page
Calculation
Simulation
BPB22303 LABORATORY 2
Rubrics for Task 2(a) & (b) [PART 2]
StudentName…………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
Marking Scheme
Note: 5=Above Expectation, 4=Meet Expectation, 3=Near Expectation, 2=Below Expectation, 1= Poor
Checklist
Task
No.
Explanation &
Communication
Assessment Criteria
Hardware Circuit
1
Demonstrate supply voltage calculation
1
2
3
4
5
2
Demonstrate load voltage calculation
1
2
3
4
5
3
Demonstrate phase angle calculation
1
2
3
4
5
4
Demonstrate power factor calculation
1
2
3
4
5
5
Supply voltage simulation measurement
1
2
3
4
5
6
Load voltage simulation measurement
1
2
3
4
5
7
Phase angle simulation measurement
1
2
3
4
5
8
Power factor simulation measurement
1
2
3
4
5
9
Circuit construction (simulation)
1
2
3
4
5
10
Timing
11
Indicate the competency in handling
equipment during the simulation
demonstration time
1
2
3
4
5
12
Present good teamwork. All team
members contribute equally by performing
the assigned tasks cooperatively
1
2
3
4
5
13
Rational reasons are given for non
functionality or partly workable lab
simulation.
1
2
3
4
5
Total Marks [50%]
4|Page
1
2
3
4
5
……/65 = ……%
BPB22303 LABORATORY 2
Rubrics for Task 1(a) & (b) [PART 1]
StudentName…………………………………………………………………………………………
…………………………………………………………………………………………………………
…………………………………………………………………………………………………………
Marking Scheme
Note: 5=Above Expectation, 4=Meet Expectation, 3=Near Expectation, 2=Below Expectation, 1= Poor
Checklist
Task
No.
Explanation &
Communication
Assessment Criteria
Hardware Circuit
1
Demonstrate Z11 calculation
1
2
3
4
5
2
Demonstrate Z12 calculation
1
2
3
4
5
3
Demonstrate Z21 calculation
1
2
3
4
5
4
Demonstrate Z22 calculation
1
2
3
4
5
5
Z11 simulation measurement
1
2
3
4
5
6
Z12 simulation measurement
1
2
3
4
5
7
Z21 simulation measurement
1
2
3
4
5
8
Z22 simulation measurement
1
2
3
4
5
9
Simulation Circuit construction
1
2
3
4
5
10
Timing
11
Indicate the competency in handling
equipment during the simulation
demonstration time
1
2
3
4
5
12
Present good teamwork. All team
members contribute equally by performing
the assigned tasks cooperatively
1
2
3
4
5
13
Rational reasons are given for non
functionality or partly workable lab
simulation.
1
2
3
4
5
Total Marks [50%]
5|Page
1
2
3
4
5
……/65 = ……%
BPB22303 LABORATORY 2
6|Page