NCCER INSTRUMENTATION questions with complete solutions 2023/2024

NCCER INSTRUMENTATIONa. SCADA b. WAN c. Peer-to-peer d. Fieldbus A technology bypassing conventional I/O by using direct communications between smart field devices and associated control processors is: a. In pairs in the same enclosure b. In a master-slave relationship at assigned locations c. As a hot standby at the central processor. d. On a different communications segments. Redundant controllers in a distributed control system reside: a. Naylor and Tunstall b. Mitchem and Smith c. Hobbs and Lewley d. Ziegler and Nichols The ultimate period method for tuning a controller was first proposed by: a. Color properties of oxygen b. Dissolvability of oxygen in water c.Liquefaction properties of oxygen d.Paramagnetic properties of oxygen One method of oxygen analysis focuses on the: a. Carbon b. Nickel c. Nickel-Chrome d. Chrome-Vanadium A Piece of pipe has an AISI classification of A105, the major alloy is: a. Humidity level b. Heat level c. Oxygen content d. MSDS content Atmosphere testing must be conducted before entry into a confined space to check for: a. Chemical Exposure Sheet b. Material Safety Data Sheet c. Manufactured Substance Data Sheet d. Hazardous Exposure Sheet Which of the following contains information about chemicals found on a job site? a. High-carbon steel b. Low-carbon steel c. Nickel Alloy d. Nonferrous Alloy Which of the following materials is selected when resistance to corrosion or high temperatures is required? a. Teflon b. Fiberglass c. Asbestos d. Metal ring joint Which of the following is a type of gasket used in high-pressure systems? a. Straight mineral oils b. Fatty and mineral oil blends c. Sulfurized mineral oils d. Fatty oils Examples of inactive cutting oil include all of the following EXCEPT: