Question 1

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?

Options :

A : 50 ohms

B : 100 ohms

C : 125 ohms

D : 150 ohms

Answer: A

Question 2

Which of the following PLC programming languages is based on a graphical representation of relay logic circuits?

Options :

A : Ladder Diagram (LD)

B : Function Block Diagram (FBD)

C : Structured Text (ST)

D : Instruction List (IL)

Answer: A

Question 3

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

Options :

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

Which of the following is NOT included in alarm philosophy documentation?

Options :

A : The guidelines for how to address all aspects of alarm management

B : The criteria for evaluating and justifying potential or existing alarms

C : The design specifications and rationale for each qualified alarm

D : The performance metrics and benchmarks for each alarm system

Answer: A

Question 5

A product pipeline is a system that transports liquid or gas products from one location to another. A control valve is a device that regulates the flow of the product through the pipeline, by adjusting its position or opening. A control valve should be selected based on the characteristics of the product, the operating conditions, and the performance requirements of the pipeline system. A coating fluid is a type of product that forms a thin layer or film on the surface of the pipeline, which can affect the flow and pressure of the product. A coating fluid can cause some residual buildup, which is the accumulation of solid or semi-solid material in the pipeline, which can reduce the flow capacity, increase the pressure drop, and damage the pipeline or equipment. For a product pipeline 49 miles in length, with a coating fluid that causes some residual buildup, which control valve would you select?

Options :

A : all valve

B : Butterfly valve

C : Globe valve

D : Plug valve

Answer: A

Free ISA-CAP Mock Exam – Practice Online Confidently

Buying Options: