- Question 2 20 Marks Supposed That You Are Measuring A Set Of Batteries Voltage As A Function Of Time Across The Electr 1 (204.66 KiB) Viewed 34 times
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QUESTION 2 (20 MARKS) Supposed that you are measuring a set of batteries voltage as a function of time across the electronic test rig. The rig is using a 5 ohm load where different types of batteries are tested. Results for each tests with a nominal rating of 1.5 volts, is tabulated below. Table Q2 t(hours) 0 1 1.5 2.5 4 Vivolts) Duracell 1.40 1.30 1.00 0.40 0.05 Energizer 1.40 1.17 1.10 1.05 0.90 Cap Ayam 1.35 1.15 1.05 1.00 0.40 Ketum 1.45 1.41 1.30 1.20 0.20 Hualawei 2.00 1.00 0.45 0.10 0.05 i) Develop the suitable numerical model to estimate the voltage within the given discharging hours for Duracell and Energizer using least-squares second-order polynomial method. (CO2:PO2- 15 marks) ii) Predict the battery voltage when t = 1.7 hours for Duracell and Energizer. (CO2:PO2-5 marks)