NCCER Review Questions with correct Answers 2024

NCCER Review Questions with correct Answers 2024 A technology bypassing conventional I/O by using direct communications between smart field devices and associated control processors is: SCADA WAN Peer-to-peer Fieldbus Fieldbus Redundant controllers in a distributed control system reside: In pairs in the same enclosure In a master-slave relationship at assigned locations As a hot standby at the central processor. On a different communications segments. As a hot standby at the central processor. The ultimate period method for tuning a controller was first proposed by: Naylor and Tunstall Mitchem and Smith Hobbs and Lewley Ziegler and Nichols Ziegler and Nichols One method of oxygen analysis focuses on the: Color properties of oxygen Dissolvability of oxygen in water Liquefaction properties of oxygen Paramagnetic properties of oxygen Color properties of oxygen A Piece of pipe has an AISI classification of A105, the major alloy is: Carbon Nickel Nickel-Chrome Chrome-Vanadium Carbon Atmosphere testing must be conducted before entry into a confined space to check for: Humidity level Heat level Oxygen content MSDS content Oxygen content Which of the following contains information about chemicals found on a job site? Chemical Exposure Sheet Material Safety Data Sheet Manufactured Substance Data Sheet Hazardous Exposure Sheet Material Safety Data Sheet Which of the following materials is selected when resistance to corrosion or high temperatures is required? High-carbon steel Low-carbon steel Nickel Alloy Nonferrous Alloy Nonferrous Alloy Which of the following is a type of gasket used in high-pressure systems? Teflon Fiberglass Asbestos Metal ring joint Metal Ring Joint Examples of inactive cutting oil include all of the following EXCEPT: Straight mineral oils Fatty and mineral oil blends Sulfurized mineral oils Fatty oils Sulfurized mineral oils Which of the following thread sealant is MOST suitable for service temperatures of 500 to 700 degrees Fahrenheit? High-temperature epoxy Teflon paste High-temperature RTV silicone Graphite paste Graphite paste A system installed to provide protection of equipment from line-to-ground fault damage is called: Ground-fault circuit interrupter (GFCI) An Uninterruptible Power Supply (UPS) A ground-fault transformer A distance relay Ground-fault circuit interrupter Increasing the carbon content in steel results in an increase in: Malleability Ductility Hardness toughness Hardness The beveled edge of an orifice plate faces Downstream Upstream Toward the control valve Toward the gate valve Upstream A bourdon tube is normally found inside a: Pipe Pressure gauge Manometer Venturi Pressure gauge A loop sheet contains all of the following information EXCEPT: The instrument tag number The location and connection section The calibration and specification section Elevation of instruments Elevation of instruments A temperature-measuring device that operates on the principle that electrical resistance changes with temperature is a Thermal bridge Bourdon tube Resistance thermal device (RTD) Thermocouple Resistance thermal device (RTD)