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L2 M M 7. Which statement is true for the process-control relay ladder diagram shown in the figure? A. The pressure switch, temperature switch, and push button must be closed for the motor to start. B. With the temperature switch closed, the motor will start once the push button is pressed. C. With the pressure switch closed and the push button released, the motor will start. D. Only the temperature switch has to close for the motor to start.

L2 M M 7. Which statement is true for the process-control relay ladder diagram shown in the figure? A. The pressure switch, temperature switch, and push button must be closed for the motor to start. B. With the temperature switch closed, the motor will start once the push button is pressed. C. With the pressure switch closed and the push button released, the motor will start. D. Only the temperature switch has to close for the motor to start.

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
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7. Which statement is true for the process-control relay ladder diagram shown in the figure?

A. The pressure switch, temperature switch, and push button must be closed for the motor to start.

B. With the temperature switch closed, the motor will start once the push button is pressed.

C. With the pressure switch closed and the push button released, the motor will start.

D. Only the temperature switch has to close for the motor to start.

### Understanding Process-Control Relay Ladder Diagrams Ladder diagrams are used in industrial control systems to illustrate the logic of electrical control circuits. The diagram below shows a basic setup for a motor control circuit. #### Diagram Explanation The ladder diagram illustrates a simple control circuit for managing a motor (denoted as "M"). It includes components such as: - **L1 and L2**: These represent the power lines supplying electrical power to the circuit. - **Switches**: The diagram features several switches – a pressure switch, a temperature switch, and a push button. - **Coil M**: This represents the motor itself. ##### Step-by-Step Flow: 1. **Power Supply**: Electricity flows from L1 and L2, representing a complete circuit loop that powers the motor when the correct conditions are met. 2. **Pressure Switch and Temperature Switch**: These switches are likely configured to close or open based on specific pressure and temperature conditions, respectively. 3. **Push Button**: This manual control can start or stop the motor based on the operator's input. 4. **Motor (M)**: This is the load that operates when the electrical path is completed. ### Multiple Choice Question The text provides a multiple-choice question about the diagram: **Question:** Which statement is true for the process-control relay ladder diagram shown in the figure? **Options:** A. The pressure switch, temperature switch, and push button must be closed for the motor to start. B. With the temperature switch closed, the motor will start once the push button is pressed. C. With the pressure switch closed and the push button released, the motor will start. D. Only the temperature switch has to close for the motor to start. #### Analysis of the Options: - **Option A** proposes that all three switches need to be closed for the motor to start. - **Option B** suggests that merely closing the temperature switch and pressing the push button will start the motor. - **Option C** claims that closing the pressure switch and releasing the push button will run the motor. - **Option D** indicates that only the temperature switch needs to close for the motor to operate. Given this setup, and assuming standard logical behavior in such circuits, you would evaluate the truthfulness of each statement based on how the switches control the motor. ### Conclusion The given diagram and accompanying question serve as a foundational understanding of how process-control relay ladder diagrams operate. Correct
Transcribed Image Text:### Understanding Process-Control Relay Ladder Diagrams Ladder diagrams are used in industrial control systems to illustrate the logic of electrical control circuits. The diagram below shows a basic setup for a motor control circuit. #### Diagram Explanation The ladder diagram illustrates a simple control circuit for managing a motor (denoted as "M"). It includes components such as: - **L1 and L2**: These represent the power lines supplying electrical power to the circuit. - **Switches**: The diagram features several switches – a pressure switch, a temperature switch, and a push button. - **Coil M**: This represents the motor itself. ##### Step-by-Step Flow: 1. **Power Supply**: Electricity flows from L1 and L2, representing a complete circuit loop that powers the motor when the correct conditions are met. 2. **Pressure Switch and Temperature Switch**: These switches are likely configured to close or open based on specific pressure and temperature conditions, respectively. 3. **Push Button**: This manual control can start or stop the motor based on the operator's input. 4. **Motor (M)**: This is the load that operates when the electrical path is completed. ### Multiple Choice Question The text provides a multiple-choice question about the diagram: **Question:** Which statement is true for the process-control relay ladder diagram shown in the figure? **Options:** A. The pressure switch, temperature switch, and push button must be closed for the motor to start. B. With the temperature switch closed, the motor will start once the push button is pressed. C. With the pressure switch closed and the push button released, the motor will start. D. Only the temperature switch has to close for the motor to start. #### Analysis of the Options: - **Option A** proposes that all three switches need to be closed for the motor to start. - **Option B** suggests that merely closing the temperature switch and pressing the push button will start the motor. - **Option C** claims that closing the pressure switch and releasing the push button will run the motor. - **Option D** indicates that only the temperature switch needs to close for the motor to operate. Given this setup, and assuming standard logical behavior in such circuits, you would evaluate the truthfulness of each statement based on how the switches control the motor. ### Conclusion The given diagram and accompanying question serve as a foundational understanding of how process-control relay ladder diagrams operate. Correct
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