The control mode that is generally not used...

The control mode that is generally not used...

Question 1 of 270705eccefa5bacbc34ba4d48812

The control mode that is generally not used by itself is __________.

Question 1 of 27070

Q

The control mode that is generally not used by itself is __________.

🔍 Key Concepts

• PID control (Proportional–Integral–Derivative) and what each term does in an automatic control loop • How integral and derivative actions behave over time when used alone • Difference between continuous (modulating) control and two-position (on/off) control with differential gap

💭 Think About

• Think about which control mode, if used alone, could cause the system to become unstable, noisy, or react too much to small, fast changes in the signal. • Consider which mode is mainly used to "smooth" or "improve" the basic control action, rather than to act as the primary control by itself. • Ask yourself: in a typical shipboard automatic control system (like temperature or speed control), which modes are normally combined (e.g., PI or PID) instead of being used alone?

✅ Before You Answer

• Review the behavior of integral control alone (slow but eliminates steady-state error) versus derivative control alone (reacts to rate of change). • Check which mode is especially sensitive to noise or rapid fluctuations and therefore usually needs to be combined with another mode to be practical. • Confirm how two-position differential gap control (on/off with deadband) is commonly used by itself in simple thermostats or level controls.