In a pneumatic automation system, a unit...

Study

Question 1 of 205eccefa5bacbc34ba4d487f4

In a pneumatic automation system, a unit producing a signal to govern the position of the controller of the measured variable, relative to the value of the measured variable, is said to have __________.

Back

Question 1 of 20

5eccefa5bacbc34ba4d487f4

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Pneumatic controller modes: proportional, reset (integral), rate (derivative), and two-position (on/off) • How the output signal changes in relation to the difference between setpoint and measured variable • Which mode gives an output that is directly proportional to the instantaneous error (not time history or on/off switching)

💭 Think About

• Ask: Is this unit giving an output that depends only on how big the present error is, or on how long the error has existed, or on how fast the error is changing? • Consider which control mode is used when the controller output is a continuous signal that moves a valve or actuator to a position corresponding to the size of the current error. • Which choice describes a control action where the output is not simply ON/OFF and does not depend on accumulated past error or rate-of-change, but on the present deviation itself?

✅ Before You Answer

• Make sure you know that reset action is another term for one specific classical control mode (think: integrates error over time). • Confirm that two-position action refers to ON/OFF control, not a continuously varying position. • Verify which mode’s definition is: output changes in proportion to the magnitude of the controlled variable’s deviation from the desired value.

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed