EPRI Test Exam New Latest Version

EPRI Test Exam New Latest Version with All Questions from Actual Past Exam and 100% Correct Answers

A valve actuator that responds to increasing pressure by extending the attached stem is a _. ---------- Correct Answer ---------- Direct-acting actuator

An orifice plate is commonly installed so that the beveled edge faces upstream.True or False ---------- Correct Answer ---------- False

To avoid kinking wire rope when spooling it onto a drum from the shipping reel, the

operator should always: -------- Correct Answer ---------- Rotate freely

What is ultimate load /divided/ safety factor? -------- Correct Answer ---------- Working load limit

Formula for IWRC -------- Correct Answer ---------- D^2 x 45

What happens when wire rope is bent around sheaves or a hook? -------- Correct Answer ---------- Nominal strength is reduced

Safety regulations prohibit clips to make sling eyes. T or F? -------- Correct Answer ------- --- True

Never replace a shackle pin with a bolt, T or F? -------- Correct Answer ---------- True

Is the pin larger than the body of the shackle? -------- Correct Answer ---------- Yes

Temperature is the measure of the _ of molecules in a substance. ---------- Correct Answer ---------- Kinetic Energy

This temperature scale is based on the freezing point of water at 0 degrees and the boiling point at 100 degrees. ---------- Correct Answer ---------- Celsius

The internal component of a globe valve that comes into direct contact with the process fluid is called the _. ---------- Correct Answer ---------- Trim

A _ valve is often used for large pipe diameters ---------- Correct Answer ---------- Butterfly

A pneumatic actuator is typically supplied with pressure in the range of _ pounds per square inch. ---------- Correct Answer ---------- 3-15 pounds per square inch 1 / 3

The process of verifying that the valve actuator can travel in a full range is called _. ------ ---- Correct Answer ---------- Bench set

A _ actuator has a cylinder and piston assembly. ---------- Correct Answer ---------- Hydraulic

The _ of a valve actuator is critical to ensure the process safety in the event of pneumatic pressure or electrical power loss. ---------- Correct Answer ---------- Fail Safe

Which type of mechanism can convert linear motion to rotary motion? ---------- Correct Answer ---------- Rack and pinion

A _____ converts electrical energy into linear motion? ---------- Correct Answer ---------- Solenoid

A linear variable differential transformer is used for _. ---------- Correct Answer ---------- Determining valve stem position

A valve positioner is used to _ for final control elements. ---------- Correct Answer ---------

• Increase Accuracy

An electropneumatic positioner uses an _ that allows the positioner to receive a current signal. ---------- Correct Answer ---------- I/P Transducer

Which component of a microprocessor-based control system performs the calculation? - --------- Correct Answer ---------- Controller

When dealing with an automatic control system, the operator... ---------- Correct Answer ---------- Observes the process and data provided by the system and makes minute adjustments if needed when an issue arises.

A type of controller commonly used for boiler burner control is the... ---------- Correct Answer ---------- single loop controller

What common PLC programming language resembles a motor control diagram? ---------

• Correct Answer ---------- Ladder Type

Once a PLC program is written using one of the programming languages, it is... ---------- Correct Answer ---------- checked for conflicts and compiled into machine language by the software.

What does the acronym ESD stand for in terms of a process control system's safety design? ---------- Correct Answer ---------- Emergency Shutdown

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Safety relays and PLCs are typically identified by which color? ---------- Correct Answer - --------- Red

Solid state switching devices are indicated by a _ around the contact. ---------- Correct Answer ---------- Diamond

Which type of control card turns positive voltage on and off to a device? ---------- Correct Answer ---------- Sourcing output

What is the specific set of rules used by a process controller to solve a problem? ---------

• Correct Answer ---------- Algorithm

A steam heat exchanger has a flow rate of 20 gallons per minute and a volume of 1 gallon per minute. The process fluid leaving the heat exchanger exhibits unstable temperature fluctuations around the set point. What is the likely cause of this instability?---------- Correct Answer ---------- The process has a small capacity for energy storage.

An instrument technician is installing the control system for an industrial parts washer.The pasts washer contains a cleaning solvent that is supplied to spray nozzles by a pump. The operator sets the parts washer to run for 30, 60, or 90 minutes depending on how many parts are put into the washer. What type of control is used by this machine? - --------- Correct Answer ---------- Open-Loop Control

An injection molding machine is used in a plant to manufacture car door panels. A conveyor assembly moves bulk plastic beads to a hopper, which is equipped with an optical level sensor. When the hopper is at the correct level, the conveyor stops feeding plastic beads. When the level drops below the level sensors, the conveyor starts feeding plastic beads into the hopper. What type of control is used by the machine? ----- ----- Correct Answer ---------- Closed-Loop Control

A water pump is installed to maintain water systems pressure. A pressure switch is installed to control the pump. The switch turns the pump on when the pressure reaches 30 pounds per square inch and turns the pump off when the pressure reaches 50 pounds per square inch. What is the switch doing to control the pump? ---------- Correct Answer ---------- The switch uses a dead band of 20 pounds per square inch to prevent the pump from cycling excessively.

A PID controller has four adjustments on the user interface: gain, reset, rate, and damping. Which adjustment would be used to increase the proportional action? ---------- Correct Answer ---------- Gain

A process operator recently changed the settings on a PID controller. The digital chart recorder now shows a consistent offset between the set point and the process variable.What is the likely cause of this offset? ---------- Correct Answer ---------- The operator turned the reset off

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