Question 1

What is the effect of increasing the derivative gain (KD) of a PID controller?

Options :

A : It reduces the rise time and the overshoot, but increases the steady-state error and the settling time

B : It reduces the overshoot and the settling time, but increases the rise time and the steady-state error

C : It reduces the rise time and the steady-state error, but increases the overshoot and the settling time

D : It reduces the settling time and the overshoot, but increases the rise time and the steady-state error

Answer: A

Question 2

A sampled data model of the process is a

Options :

A : discrete-time representation of a continuous-time system

B : continuous-time representation of a discrete-time system

C : linear approximation of a nonlinear system

D : nonlinear approximation of a linear system

Answer: A

Question 3

Which of the following statements is true about gauge pressure?

Options :

A : It is measured relative to a perfect vacuum.

B : It is measured relative to the local atmospheric pressure.

C : It is measured relative to the pressure difference between two points.

D : It is measured relative to the pressure in an adjacent vessel.

Answer: A

Question 4

What is the main difference between a loop diagram and a P&ID?

Options :

A : loop diagram shows more details about the field instruments and their wiring, while a P&ID shows more details about the process and its piping

B : A loop diagram shows more details about the process and its piping, while a P&ID shows more details about the field instruments and their wiring

C : A loop diagram shows more details about the control system and its logic, while a P&ID shows more details about the field instruments and their wiring

D : A loop diagram shows more details about the field instruments and their wiring, while a P&ID shows more details about the control system and its logic

Answer: A

Question 5

Which of the following is not a valid form of PID algorithm implemented in modern PID controllers?

Options :

A : Parallel form

B : Ideal form

C : Series form

D : Hybrid form

Answer: A

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