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Using the formulas found in question 1, compute the amount of capacitive  current  needed in the circuit  to correct the power factor to 90%.

Using the formulas found in question 1, compute the amount of capacitive  current  needed in the circuit  to correct the power factor to 90%.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Using the formulas found in question 1, compute the amount of capacitive  current  needed in the circuit  to correct the power factor to 90%.

### Educational Content: Power Factor Correction in Electrical Circuits #### Instructions for Experimentation 1. **Measure the Amount of True Power in the Circuit.** - Record the true power measured in watts (W). - Measurement: __________ W 2. **Measure the Amount of Voltage Across the Motor and the Amount of Circuit Current.** - Record the voltage (E) in volts (V) and current (I) in amperes (A). - E = __________ V - I = __________ A 3. **Compute the Circuit Power Factor.** - Calculate the power factor as a percentage (%). - PF = __________ % 4. **Conclude the Experiment Safely.** - Turn off the power supply and disconnect the circuit. - Return all components to their proper place. --- #### Review Questions 1. **Problem Scenario:** Assume that a single-phase motor is connected to a 240-VAC line and has a current draw of 6 A. A wattmeter connected in the circuit indicates a true power value of 864 W. Compute the following values: - **Apparent Power (VA):** - VA = __________ - **Power Factor (PF):** - PF = __________ % - **Reactive Power (VARS):** - VARs = __________ 2. **Capacitive Current Calculation:** Using the values found in question 1, compute the amount of capacitive current needed in the circuit to correct the power factor to 90%. - \( I_C = \) __________ A 3. **Capacitive Reactance Calculation:** Compute the capacitive reactance needed to correct the power factor. - \( X_C = \) __________ Ω 4. **Capacitance Calculation:** Compute the amount of capacitance needed to correct the power factor to 90%. - \( C = \) __________ μF ### Explanation This exercise focuses on understanding the process of power factor correction in electrical circuits. Power factor is a crucial aspect in AC power systems, influencing the efficiency and stability of electrical networks. The experiment and review questions guide students through the calculations needed to determine actual power, apparent power, reactive power, and the correction needed to optimize the circuit’s power factor.
Transcribed Image Text:### Educational Content: Power Factor Correction in Electrical Circuits #### Instructions for Experimentation 1. **Measure the Amount of True Power in the Circuit.** - Record the true power measured in watts (W). - Measurement: __________ W 2. **Measure the Amount of Voltage Across the Motor and the Amount of Circuit Current.** - Record the voltage (E) in volts (V) and current (I) in amperes (A). - E = __________ V - I = __________ A 3. **Compute the Circuit Power Factor.** - Calculate the power factor as a percentage (%). - PF = __________ % 4. **Conclude the Experiment Safely.** - Turn off the power supply and disconnect the circuit. - Return all components to their proper place. --- #### Review Questions 1. **Problem Scenario:** Assume that a single-phase motor is connected to a 240-VAC line and has a current draw of 6 A. A wattmeter connected in the circuit indicates a true power value of 864 W. Compute the following values: - **Apparent Power (VA):** - VA = __________ - **Power Factor (PF):** - PF = __________ % - **Reactive Power (VARS):** - VARs = __________ 2. **Capacitive Current Calculation:** Using the values found in question 1, compute the amount of capacitive current needed in the circuit to correct the power factor to 90%. - \( I_C = \) __________ A 3. **Capacitive Reactance Calculation:** Compute the capacitive reactance needed to correct the power factor. - \( X_C = \) __________ Ω 4. **Capacitance Calculation:** Compute the amount of capacitance needed to correct the power factor to 90%. - \( C = \) __________ μF ### Explanation This exercise focuses on understanding the process of power factor correction in electrical circuits. Power factor is a crucial aspect in AC power systems, influencing the efficiency and stability of electrical networks. The experiment and review questions guide students through the calculations needed to determine actual power, apparent power, reactive power, and the correction needed to optimize the circuit’s power factor.
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