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: Dec 17, 2025

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Question 1

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

Question 2

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 3

What are the basic components of a ladder diagram program in a PLC?

A : ontacts, coils, timers, and counters

B : Inputs, outputs, timers, and counters

C : Contacts, coils, functions, and data

D : Inputs, outputs, functions, and data

Answer: A

Question 4

A contractor purchases and installs a manual motor protector in accordance with the manufacturer’s installation instructions and the applicable National Electric Code (NEC) installation code. What is the main advantage of using a manual motor protector over a conventional circuit breaker or fuse?

A : manual motor protector provides both overload and short-circuit protection in a single device, eliminating the need for additional components and wiring.

B : A manual motor protector provides a faster and more reliable response to short-circuit conditions, switching off the motor within milliseconds to prevent damage.

C : A manual motor protector provides a more accurate and adjustable current setting range, allowing for better motor control and performance.

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: Dec 17, 2025

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