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: Jun 15, 2026

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Question 1

In an instrument air system, the dew point analyzer should be mounted at the:

A : ompressor inlet

B : Compressor outlet

C : Dryer outlet

D : Receiver outlet

Answer: A

Question 2

How can the linked relationship between a P&ID and loop sheets be shown in a diagram?

A : y using the same device abbreviation and loop number for each instrument in both the P&ID and the loop sheet

B : By using the same symbols and layout for each unit and pipe in both the P&ID and the loop sheet

C : By using the same color scheme and font size for each component and label in both the P&ID and the loop sheet

D : By using the same scale and orientation for each diagram in both the P&ID and the loop sheet

Answer: A

Question 3

What is a cost-effective method of mitigating the effects of deep voltage sags on programmable electronic devices and preventing power interruptions or shutdowns in critical industrial manufacturing processes?

A : Using a dynamic voltage restorer (DVR) to inject the required voltage to compensate for the voltage sag and maintain the load voltage

B : Using a static synchronous compensator (STATCOM) to regulate the reactive power and improve the power factor and voltage stability

C : Using a unified power quality conditioner (UPQC) to correct both voltage and current disturbances and provide a clean power supply

D : Using a superconducting magnetic energy storage (SMES) system to store and release energy quickly and efficiently

Answer: A

Question 4

Which of the following statements is true about gauge pressure?

A : It is measured relative to a perfect vacuum.

B : It is measured relative to the local atmospheric pressure.

C : It is measured relative to the pressure difference between two points.

D : It is measured relative to the pressure in an adjacent vessel.

Answer: A

Question 5

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

Page: 1 / 112

Total 557 Questions | Updated On: Jun 15, 2026

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