Question 1

Integral action is a controller action that adjusts the output of a controller based on the accumulated error over time. Integral action eliminates offset by continuously shifting the proportional band until the error is zero. Integral action operates on the:

Options :

A : urrent error

B : Rate of change of error

C : Sum of past errors

D : Difference between setpoint and process variable

Answer: A

Question 2

Which of the following control valves is most suitable for handling a low pressure drop in a pipe over two inches in diameter?

Options :

A : all valve

B : Globe valve

C : Diaphragm valve

D : Butterfly valve

Answer: A

Question 3

What are the two main factors that affect the maximum number of devices that can be powered from the FOUNDATION Fieldbus H1 segment?

Options :

A : The length of the cable and the voltage drop along the cable

B : The current consumption of each device and the total current available on the segment

C : The data rate of the communication and the bandwidth of the cable

D : The type of physical media and the type of explosion protection

Answer: A

Question 4

Which of the following BEST describes the different technology logic systems used in safety systems?

Options :

A : They are systems that use sensors, logic solvers, and final control elements to take the process to a safe state in case of an emergency.

B : They are systems that use switches, relays, and valves to control the process variables and prevent any safety hazards.

C : They are systems that use transmitters, controllers, and actuators to monitor the process conditions and optimize the performance.

D : They are systems that use scanners, computers, and displays to collect and analyze the process data and provide feedback.

Answer: A

Question 5

A product pipeline is a system that transports liquid or gas products from one location to another. A control valve is a device that regulates the flow of the product through the pipeline, by adjusting its position or opening. A control valve should be selected based on the characteristics of the product, the operating conditions, and the performance requirements of the pipeline system. A coating fluid is a type of product that forms a thin layer or film on the surface of the pipeline, which can affect the flow and pressure of the product. A coating fluid can cause some residual buildup, which is the accumulation of solid or semi-solid material in the pipeline, which can reduce the flow capacity, increase the pressure drop, and damage the pipeline or equipment. For a product pipeline 49 miles in length, with a coating fluid that causes some residual buildup, which control valve would you select?

Options :

A : all valve

B : Butterfly valve

C : Globe valve

D : Plug valve

Answer: A

Confidently Practice Online with Free ISA-CAP Exam Cram

Buying Options: