Lab #1_ Introduction to Instruments

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Carleton University *

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1043

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Electrical Engineering

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Jan 9, 2024

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Lab #1: Introduction to Instruments ECOR1043: Circuits Lab Group No: 1043B2-G16 Group Member 1: 101301584 Ammar Alturaihi Group Member 2: 101296389 Vison La Performed on: 18/09/2023 Submitted on: 21/09/2023

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1. In step 3 of section 6.2, the measured values of resistances were slightly different than the values obtained through the color coding chart. Why is it so? Give a percentage error for each resistor. There could be a difference between both values as the resistance color code value is an estimation, and the actual resistor may be affected by factors such as temperature, age, and manufacturing tolerances. In the case of temperature for example, the color chart indicates that it’s based on if the resistor is at room temperature, however the practical temperature where the lab was held could differ and affect the values. 1: 2.2% 2: 1.9% 3: 1.55% 4: 0.4%: 2. Is it right procedure to measure the the resistance of a resistor already connected in the circuit? Explain why or why not? Connecting the circuit would be wrong as the results have a chance of being inaccurate. This is because there are other parts around the resistor which could alter the results drastically. The best way to get an accurate measurement would be to disconnect one end of the resistor and measure that part by itself. 3. Plot the voltages measured using the DMM and the oscilloscope in step 15 of section 6.10 versus frequency. What trend do you notice about the values measured by DMM (as compared to the Oscilloscope) and why? Explain briefly? The oscilloscope’s values are much higher and more so show the peak values of the sine waves provided whereas the digital multimeter instead shows you the average and RMS values of the voltages from the frequencies given.

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4. Write one advantage of assembling a circuit on the breadboard and one advantage of soldering the circuit. An advantage with a breadboard is that you can build circuits in a temporary form and change components when needed so you don’t immediately have to make a permanent circuit board. As for soldering the circuit, The electrical connection is always guaranteed if you can solder, and the connections are very rigid. Additional Pictures: