Free ISA-IEC ISA-CAP Exam Questions

Become ISA-IEC Certified with updated ISA-CAP exam questions and correct answers

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Total 557 Questions | Updated On: May 12, 2026

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Question 1

What is the main function of the highest layer in a communications stack?

A : It creates communication channels between devices.

B : It coordinates the data transfer between end systems and hosts.

C : It translates data formats between applications and networks.

D : It interacts with the user and provides network services.

Answer: A

Question 2

After accessing the data in the OPC server, how does the operator specify parameters for graphic object animations in the HMI software?

A : y dragging and dropping the data items from the OPC server browser to the graphic objects on the HMI screen.

B : By selecting the graphic objects on the HMI screen and entering the data item names and values in the properties window.

C : By creating a tag database that links the data items from the OPC server to the graphic objects on the HMI screen.

D : By writing a script that assigns the data items from the OPC server to the graphic objects on the HMI screen.

Answer: A

Question 3

A device failure goes undetected by internal diagnostics; it does not directly impact safety but it does impact the ability to detect a future fault in a diagnostic circuit. In a failure rate database, this event would be classified as:

A : safe failure, since it does not increase the risk of a hazardous event and can be corrected during routine maintenance.

B : A dangerous failure, since it reduces the availability and reliability of the device and increases the probability of a hazardous event.

C : A latent failure, since it is not detected by the device or the user and remains hidden until it causes a hazardous event.

D : A nuisance failure, since it does not affect the safety or availability of the device but may cause annoyance or inconvenience to the user.

Answer: A

Question 4

Which of the following methods can increase the torque of an AC motor?

A : Increasing the internal rotor resistance

B : Increasing the external rotor resistance

C : Increasing the voltage or frequency

D : All of the above

Answer: A

Question 5

What is the next best course of action after troubleshooting a system failure by replacing a suspected bad component with a known good component and finding that this does not correct the problem?

A : Replace another component that is related to the problem and test again

B : Consult a third person who has advanced knowledge about the system or the principles

C : Remove devices one at a time and test again

D : Insert faults into the system and observe the response

Answer: A

Page: 1 / 112

Total 557 Questions | Updated On: May 12, 2026

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