1EL3 LAB 5_2024

pdf

School

McMaster University *

*We aren’t endorsed by this school

Course

1PR3

Subject

Electrical Engineering

Date

Apr 3, 2024

Type

pdf

Pages

Uploaded by MasterTitanium5485

ENGTECH 1EL3 | 1 Lab 5: The Superposition Theorem Warning: In this lab, you will be using a battery in a circuit that contains another power source. Not following the instructions in this lab manual might result into damaging the battery and possible INJURIES . 1. Objectives  Validate the superposition theorem.  Demonstrate that the superposition theorem can be applied to both current and voltage levels.  Demonstrate that the superposition theorem cannot be applied to nonlinear functions 2. Introduction: The superposition theorem states that the current through, or voltage cross, any resistive branch of a multisource network is the algebraic sum of the contributions due to each source acting independently. In this experiment, you will build a circuit with two voltage sources. You will study the contribution of each individual source. You will finally verify the superposition theorem. 3. Equipment:  Power Supply  Voltage cell  Multimeter  Resistors  Breadboard

ENGTECH 1EL3 | 2 4. Procedure Part 1: Battery only 1. Measure the resistors and build the circuit shown in figure 1.1. Figure 1.1 2. Measure the voltage of the battery and record it as E1. 3. Measure the Voltage 𝑉 ଷ ᇱ across R3. 4. Measure the currents 𝐼 ଵ ᇱ , 𝐼 ଶ ᇱ , and 𝐼 ଷ ᇱ . 5. Calculate the power in R3. Note that all the points that are the negative (blue) rail are internally connected by the breadboard. I 1 ’ I 2 ’ I 3 ’ + _ V 3 ’ E 1

ENGTECH 1EL3 | 3 Part 2: Power adapter only 6. Build the circuit shown in figure 1.2. Figure 1.2 7. Set the voltage setting to 5V on the power adaptor. 8. Measure the output voltage of the power adaptor and record it as E2. 9. Measure the Voltage 𝑉 ଷ ᇱ ′ across R3. 10. Measure the currents 𝐼 ଵ ᇱ ′ , 𝐼 ଶ ᇱ ′ , and 𝐼 ଷ ᇱ ′ . 11. Calculate the power in R3. I 1 ’’ I 3 ’’ I 2 ’’ + _ V 3 ’’ E 2

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

ENGTECH 1EL3 | 4 Part 3: Connecting the battery and the Power adapter 12. Before connecting the battery to the circuit, remove the short circuit jumper and measure the voltage between the unconnected terminal of R2 and the ground. See Figure 1.3. 13. The measured voltage should be close to 0.88 V . CHECKPOINT: SHOW YOUR RESULT TO THE LAB INSTRUCTOR Warning: If the voltage measured in step 15 is higher than 1 V, YOU CANNOT PROCEED to the next steps. Please WAIT for the Lab instructor to troubleshoot the error. Proceeding after this step while the measured voltage is higher than the battery voltage might damage the battery and cause INJURIES. Figure 1.3 E 2

ENGTECH 1EL3 | 5 14. Connect the battery terminals as shown in Figure 1.4. 15. Measure the Voltage 𝑉 ଷ across R3. 16. For safety reasons, measure only currents 𝐼 ଵ and 𝐼 ଶ (DO NOT MEASURE 𝐼 ଷ ). CHECKPOINT: SHOW I2 MEASUREMENT TO THE LAB INSTRUCTOR 17. Calculate 𝐼 ଷ = ௏ య ோ య 18. Calculate the power in R3. Figure 1.4 19. Disconnect the battery and the power adaptor from your circuit. I 1 I 3 I 2 + _ V 3 E 2 E 1

ENGTECH 1EL3 | 6 5. Analysis Questions 1. Analyze the circuit in Figure 1.1 and calculate 𝑉 ଷ ᇱ across R3, 𝐼 ଵ ᇱ , 𝐼 ଶ ᇱ , and 𝐼 ଷ ᇱ . Compare the calculated values with the measured values. 2. Analyze the circuit in Figure 1.2 and calculate 𝑉 ଷ ᇱᇱ across R3, 𝐼 ଵ ᇱᇱ , 𝐼 ଶ ᇱᇱ , and 𝐼 ଷ ᇱᇱ . Compare the calculated values with the measured values. 3. Using Superposition, calculate the theoretical values of 𝑉 ଷ across R3, 𝐼 ଵ , 𝐼 ଶ , and 𝐼 ଷ . Compare the calculated values with the measured values. 4. Using the values measured during this experiment, verify that the superposition theorem be applied for current and voltage calculations, and it cannot be applied for power calculations. 6. Circuit Simulation Use Multisim 14.1 to simulate the circuits in Figure 1.1, 1.2, and 1.4. In your simulation, show the values of I1, I2, I3, and V3. 7. Lab Submission 1. Please submit a report for this lab. The report must follow the format described in “1EL3 Lab Report Format” document on Avenue to Learn under the Contents>>Labs. 2. Add any comments to improve this lab manual.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

ENGTECH 1EL3 | 7 L5 Record Sheet PART 1: E1 𝑉 ଷ ᇱ 𝐼 ଵ ᇱ 𝐼 ଶ ᇱ 𝐼 ଷ ᇱ Measured Value Power dissipated in R3 PART 2: E2 𝑉 ଷ ᇱᇱ 𝐼 ଵ ᇱᇱ 𝐼 ଶ ᇱᇱ 𝐼 ଷ ᇱᇱ Measured Value Power dissipated in R3 PART 3: 𝑉 ଷ 𝐼 ଵ 𝐼 ଶ 𝐼 ଷ Measured Value 𝐼 ଵ + 𝐼 ଶ = _______ Power dissipated in R3 Instructor Sign-off: _____________________________