Q. In a PID controller, what does the 'I' stand for?
-
A.
Integral
-
B.
Inductive
-
C.
Input
-
D.
Instantaneous
Solution
The 'I' in PID stands for Integral, which accumulates the error over time to eliminate steady-state error.
Correct Answer:
A
— Integral
Learn More →
Q. What is the purpose of a Bode plot?
-
A.
To visualize the time response of a system.
-
B.
To analyze the stability of a system.
-
C.
To represent the frequency response of a system.
-
D.
To determine the transfer function directly.
Solution
Bode plots are used to represent the frequency response of a system, showing gain and phase across a range of frequencies.
Correct Answer:
C
— To represent the frequency response of a system.
Learn More →
Q. What is the purpose of a transfer function in control systems?
-
A.
To represent the system's output in the time domain.
-
B.
To describe the relationship between input and output in the frequency domain.
-
C.
To provide a graphical representation of system stability.
-
D.
To calculate the system's response to disturbances.
Solution
The transfer function describes the relationship between the input and output of a system in the frequency domain.
Correct Answer:
B
— To describe the relationship between input and output in the frequency domain.
Learn More →
Q. Which of the following indicates a stable system in the context of Bode plots?
-
A.
The gain margin is negative.
-
B.
The phase margin is positive.
-
C.
The gain increases indefinitely.
-
D.
The phase crosses -180 degrees at a low frequency.
Solution
A positive phase margin indicates that the system is stable, as it shows how much phase shift can be tolerated before instability occurs.
Correct Answer:
B
— The phase margin is positive.
Learn More →
Q. Which of the following is a disadvantage of open-loop systems?
-
A.
They are simple to design.
-
B.
They can be less expensive.
-
C.
They cannot correct for disturbances.
-
D.
They are always stable.
Solution
Open-loop systems cannot correct for disturbances, making them less robust compared to closed-loop systems.
Correct Answer:
C
— They cannot correct for disturbances.
Learn More →
Showing 1 to 5 of 5 (1 Pages)
