QuestionMay 17, 2025

3. Imagine you are in a cabin in front of a small fire on a cold winter evening. You feel uncomfortably cold, so you throw another log into the fire. In this scenario, the process variable is temperature. Is this true or false? 4. If the level of a liquid in a tank must be maintained within 5 ft of 50 ft, what is the liquid's setpoint? 1 45 ft 2 55 ft 3 5 ft 4 50 ft Control Theory Basics Activities 5. __ is a sustained deviation of the process variable from the setpoint. 6. A load disturbance is an undesired change in one of the factors that can affect the setpoint. Is this statement true or false?

3. Imagine you are in a cabin in front of a small fire on a cold winter evening. You feel uncomfortably cold, so you throw another log into the fire. In this scenario, the process variable is temperature. Is this true or false? 4. If the level of a liquid in a tank must be maintained within 5 ft of 50 ft, what is the liquid's setpoint? 1 45 ft 2 55 ft 3 5 ft 4 50 ft Control Theory Basics Activities 5. __ is a sustained deviation of the process variable from the setpoint. 6. A load disturbance is an undesired change in one of the factors that can affect the setpoint. Is this statement true or false?
3. Imagine you are in a cabin in front of a small fire on a cold winter evening. You feel uncomfortably cold, so you throw another log into the fire. In this scenario, the process variable is temperature. Is this true or false? 4. If the level of a liquid in a tank must be maintained within 5 ft of 50 ft, what is the liquid's setpoint? 1 45 ft 2 55 ft 3 5 ft 4 50 ft Control Theory Basics Activities 5. __ is a sustained deviation of the process variable from the setpoint. 6. A load disturbance is an undesired change in one of the factors that can affect the setpoint. Is this statement true or false?

Solution
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Answer

3. True ### 4. 50 ft ### 5. Offset ### 6. True Explanation 1. Determine if temperature is the process variable The process variable is the quantity being controlled or measured. In this scenario, temperature is indeed the process variable as it is what you are trying to control by adding a log to the fire. 2. Identify the liquid's setpoint The setpoint is the desired value of the process variable. Here, the level must be maintained within 5 ft of 50 ft, so the setpoint is 50 ft. 3. Define sustained deviation A sustained deviation is when the process variable consistently differs from the setpoint over time. 4. Evaluate statement about load disturbance A load disturbance is indeed an undesired change affecting the process variable, not the setpoint directly. The statement is true.

Explanation

1. Determine if temperature is the process variable<br /> The process variable is the quantity being controlled or measured. In this scenario, temperature is indeed the process variable as it is what you are trying to control by adding a log to the fire.<br /><br />2. Identify the liquid's setpoint<br /> The setpoint is the desired value of the process variable. Here, the level must be maintained within 5 ft of 50 ft, so the setpoint is 50 ft.<br /><br />3. Define sustained deviation<br /> A sustained deviation is when the process variable consistently differs from the setpoint over time.<br /><br />4. Evaluate statement about load disturbance<br /> A load disturbance is indeed an undesired change affecting the process variable, not the setpoint directly. The statement is true.
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