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Item 1 2 3 4 S 6 7 Resistive Load P₁ Description Watts 100 1500 1500 1800 3000 25 Warmer Burner Burner Burner Oven Heater Oven Lamp P=[P NOTES: Calculate R, Ohms Formula R₁-V¹/P₁ R₂-V²/P₁ R₁=V²/P, R=V²/P₁ R₁-V²/PS R=V²/P6 R-V²/P Calculation 1. V-240 volts is the voltage imposed on all of the resistive loads. Formula I₁=V/R₁ L₂=V/R₂ 1₁=V/R₁ L-V/R₁ Is=V/Rs 16 V/R6 1=24 3. The unit of watts is a scalar quantity. Hence P= P.. Calculate 1, Amps 2. Before we can construct the circuit, we must first calculate the resistance of all loads, but these loads will be labeled with their rated watts on the circuit diagram. 4. Note that "I" can be calculated with Ohm's Law (I-V/R) or the Power Law, I = P/V. 5. Note also, that formula I-E1, represents Kirchhoff's Current Law. Calculation 6. It is sometimes necessary to first calculate the equivalent value of parallel resistances, as in LAB_S.

Item 1 2 3 4 S 6 7 Resistive Load P₁ Description Watts 100 1500 1500 1800 3000 25 Warmer Burner Burner Burner Oven Heater Oven Lamp P=[P NOTES: Calculate R, Ohms Formula R₁-V¹/P₁ R₂-V²/P₁ R₁=V²/P, R=V²/P₁ R₁-V²/PS R=V²/P6 R-V²/P Calculation 1. V-240 volts is the voltage imposed on all of the resistive loads. Formula I₁=V/R₁ L₂=V/R₂ 1₁=V/R₁ L-V/R₁ Is=V/Rs 16 V/R6 1=24 3. The unit of watts is a scalar quantity. Hence P= P.. Calculate 1, Amps 2. Before we can construct the circuit, we must first calculate the resistance of all loads, but these loads will be labeled with their rated watts on the circuit diagram. 4. Note that "I" can be calculated with Ohm's Law (I-V/R) or the Power Law, I = P/V. 5. Note also, that formula I-E1, represents Kirchhoff's Current Law. Calculation 6. It is sometimes necessary to first calculate the equivalent value of parallel resistances, as in LAB_S.

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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**Title: Understanding Electric Stove Circuit and Power Calculation** --- **Circuit Diagram Description:** The diagram illustrates an electric stove circuit connected to a wattmeter (model: XW-M1). The primary components and their configurations are detailed below: - **Power Source:** The circuit is powered by a 240V supply. - **Wattmeter:** Displays power consumption at 7.924 kW with a power factor of 1.0000. - **Keys and Loads:** - **Key A:** Connects a 3.0 kW resistor. - **Key B:** Connects a 1.8 kW resistor. - **Key C:** Connects a 1.5 kW resistor. - **Key D:** Connects a 1.5 kW resistor. - **Key E:** Connects a 100 W resistor. - **Key F:** Connects a 240V, 25V load. - **Indicators:** Each key section has an associated digital value display showing load resistance or current values. **Measurement Units and Indicators:** - The digital displays show calculated values (presumably resistance or current for each load) without specific units marked on the diagram: - 33.04 (Key A) - 12.49 (Key B) - 7.499 (Key C) - 6.249 (Key D) - 4.149 (Key E) - 8.474 / 1.194 (Key F) **Circuit Functionality:** - **Purpose:** Demonstrates how each key, when activated, contributes to the total power usage shown on the wattmeter. - **Calculations:** Each load is summed up to reflect the total energy consumed. This is fundamental in understanding how energy usage varies with different resistive loads in parallel configurations. **Applications and Practical Use:** - The diagram is essential for educational purposes, illustrating concepts such as resistive circuits, power calculations, and real-world applications for energy consumption appliances. - Understanding this setup helps in calculating load requirements and optimizing energy efficiency in devices like electric stoves. **Conclusion:** The circuit exemplifies the operation of an electric stove, detailing each component's power usage and reflecting on efficient circuit design and energy management. This understanding is pivotal for electrical engineering students and professionals working with appliance design and energy systems.
Transcribed Image Text:**Title: Understanding Electric Stove Circuit and Power Calculation** --- **Circuit Diagram Description:** The diagram illustrates an electric stove circuit connected to a wattmeter (model: XW-M1). The primary components and their configurations are detailed below: - **Power Source:** The circuit is powered by a 240V supply. - **Wattmeter:** Displays power consumption at 7.924 kW with a power factor of 1.0000. - **Keys and Loads:** - **Key A:** Connects a 3.0 kW resistor. - **Key B:** Connects a 1.8 kW resistor. - **Key C:** Connects a 1.5 kW resistor. - **Key D:** Connects a 1.5 kW resistor. - **Key E:** Connects a 100 W resistor. - **Key F:** Connects a 240V, 25V load. - **Indicators:** Each key section has an associated digital value display showing load resistance or current values. **Measurement Units and Indicators:** - The digital displays show calculated values (presumably resistance or current for each load) without specific units marked on the diagram: - 33.04 (Key A) - 12.49 (Key B) - 7.499 (Key C) - 6.249 (Key D) - 4.149 (Key E) - 8.474 / 1.194 (Key F) **Circuit Functionality:** - **Purpose:** Demonstrates how each key, when activated, contributes to the total power usage shown on the wattmeter. - **Calculations:** Each load is summed up to reflect the total energy consumed. This is fundamental in understanding how energy usage varies with different resistive loads in parallel configurations. **Applications and Practical Use:** - The diagram is essential for educational purposes, illustrating concepts such as resistive circuits, power calculations, and real-world applications for energy consumption appliances. - Understanding this setup helps in calculating load requirements and optimizing energy efficiency in devices like electric stoves. **Conclusion:** The circuit exemplifies the operation of an electric stove, detailing each component's power usage and reflecting on efficient circuit design and energy management. This understanding is pivotal for electrical engineering students and professionals working with appliance design and energy systems.
### Transcription for Educational Website #### Table of Resistive Load Calculations | Item | Description | \(P_i\) Watts | Calculate \(R\), Ohms | | | Calculate \(I\), Amps | | | |------|-------------|----------------|--------------------------|---------|--------------|----------------------|---------|--------------| | 1 | Warmer | 100 | Formula: \(R_1 = V^2/P_1\) | Calculation: | Formula: \(I_1 = V/R_1\) | Calculation: | | 2 | Burner | 1500 | Formula: \(R_2 = V^2/P_2\) | Calculation: | Formula: \(I_2 = V/R_2\) | Calculation: | | 3 | Burner | 1500 | Formula: \(R_3 = V^2/P_3\) | Calculation: | Formula: \(I_3 = V/R_3\) | Calculation: | | 4 | Burner | 1800 | Formula: \(R_4 = V^2/P_4\) | Calculation: | Formula: \(I_4 = V/R_4\) | Calculation: | | 5 | Oven Heater | 3000 | Formula: \(R_5 = V^2/P_5\) | Calculation: | Formula: \(I_5 = V/R_5\) | Calculation: | | 6 | Oven Lamp | 25 | Formula: \(R_6 = V^2/P_6\) | Calculation: | Formula: \(I_6 = V/R_6\) | Calculation: | | 7 | | | \(P = \sum P_i\) | \(R = V^2/P\) | \(I = \sum I_i\) | | #### Notes: 1. **Voltage Imposition:** \(V = 240\) volts is the voltage imposed on all of the resistive loads. 2. **Resistance Calculation:** Before we can construct the circuit, we must first calculate the resistance of all loads, but these loads will be labeled with their rated watts on the circuit diagram. 3. **Unit of Watts:** The unit of watts is a
Transcribed Image Text:### Transcription for Educational Website #### Table of Resistive Load Calculations | Item | Description | \(P_i\) Watts | Calculate \(R\), Ohms | | | Calculate \(I\), Amps | | | |------|-------------|----------------|--------------------------|---------|--------------|----------------------|---------|--------------| | 1 | Warmer | 100 | Formula: \(R_1 = V^2/P_1\) | Calculation: | Formula: \(I_1 = V/R_1\) | Calculation: | | 2 | Burner | 1500 | Formula: \(R_2 = V^2/P_2\) | Calculation: | Formula: \(I_2 = V/R_2\) | Calculation: | | 3 | Burner | 1500 | Formula: \(R_3 = V^2/P_3\) | Calculation: | Formula: \(I_3 = V/R_3\) | Calculation: | | 4 | Burner | 1800 | Formula: \(R_4 = V^2/P_4\) | Calculation: | Formula: \(I_4 = V/R_4\) | Calculation: | | 5 | Oven Heater | 3000 | Formula: \(R_5 = V^2/P_5\) | Calculation: | Formula: \(I_5 = V/R_5\) | Calculation: | | 6 | Oven Lamp | 25 | Formula: \(R_6 = V^2/P_6\) | Calculation: | Formula: \(I_6 = V/R_6\) | Calculation: | | 7 | | | \(P = \sum P_i\) | \(R = V^2/P\) | \(I = \sum I_i\) | | #### Notes: 1. **Voltage Imposition:** \(V = 240\) volts is the voltage imposed on all of the resistive loads. 2. **Resistance Calculation:** Before we can construct the circuit, we must first calculate the resistance of all loads, but these loads will be labeled with their rated watts on the circuit diagram. 3. **Unit of Watts:** The unit of watts is a
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The power rating and measured currents for the parallel connected loads are given. All loads are connected to 240 V DC supply.


To determine:

  • resistance of each unit and current flowing through them.
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