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

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 2

A project manager prepares a work breakdown structure (WBS) identifying each major task and related subtasks required to fulfill the project objective. Subtasks are further reduced into units and subunits with associated cost projects and assigned responsibilities. This activity occurs during which phase of a project's life cycle?

A : Initiation phase

B : Planning phase

C : Execution phase

D : Closure phase

Answer: A

Question 3

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 4

A resistor is used in a current loop system to convert the current signal to a voltage signal that can be measured by an indicator or a controller. The value of the resistor determines the voltage range that corresponds to the current range. For example, in a 4 to 20 mA system with a 250 ohm resistor, the voltage range is 1 to 5 V, because V = IR, where V is the voltage, I is the current, and R is the resistance. What is the value of resistance?

A : 50 ohms

B : 100 ohms

C : 125 ohms

D : 150 ohms

Answer: A

Question 5

What is true of both single-phase and polyphase AC motors:

A : They both use a rotating magnetic field to induce torque in the rotor.

B : They both require a capacitor to create the necessary phase shift for starting.

C : They both have the same number of stator windings and rotor poles.

D : They both have the same efficiency and power factor

Answer: A

Page: 1 / 112

Total 557 Questions | Updated On: Dec 17, 2025

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