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: Mar 21, 2026

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Question 1

Which of the following statements is not true about the limitations of relay ladder logic and function block languages?

A : They are not suitable for mathematical calculations or complex logic functions

B : They are not suitable for data manipulation or communication with other devices

C : They are not suitable for discrete or sequential control

D : They are not suitable for large programs that require modularity and reusability

Answer: A

Question 2

Which of the following types of motors can provide high starting torque and fairly constant speed?

A : Shunt-wound DC motor

B : Series-wound DC motor

C : Cumulative compound DC motor

D : Differential compound DC motor

Answer: A

Question 3

Which of the following is the next step in the cycle after housekeeping tasks such as communication with operator:

A : Update Inputs

B : Execute Program

C : Update Outputs

D : Initialize Hardware

Answer: A

Question 4

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

Question 5

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

Page: 1 / 112

Total 557 Questions | Updated On: Mar 21, 2026

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