NRCC Instrumentation Practice Test

These questions are part of the practice quiz. Start practicing

• What is a heat exchanger?
• Flashing in a fluid system occurs under which condition?
• Which statement best describes intrinsically safe equipment?
• A conductive probe is used to measure what in aqueous samples?
• OSHA stands for which description?
• What describes a sourcing input or output?
• Inside a pressure gauge, which component acts as a flexible C-shaped tube?
• Wet leg refers to which definition?
• What does a MAC address represent?
• What is the function of an I/P Transducer?
• Which manufacturer offers the S7-1500 Safety option?
• Reynolds number represents what in fluid flow?
• What is a User frame?
• What is a UPS?
• Fieldbus is best described as which type of network?
• In solids, heat transfer due to temperature differences is primarily by which mechanism?
• Which device converts electrical energy into mechanical motion?
• DIN rail is best described as which of the following?
• How does a differential pressure (DP) flowmeter operate?
• In a wiring diagram, L1-L3 stands for?
• Cavitation damage in a pump is primarily caused by which phenomenon?
• NIST traceability is associated with what?
• In a control loop, which component is primarily responsible for measuring the process variable?
• Is a thermocouple inductive?
• A protocol is best described as which of the following?
• What is a thermowell?
• Which heat transfer mode involves heat passing through a solid material?
• What is an indexer in instrumentation?
• Coriolis meter is best described as what?
• DeviceNet is defined as which of the following?
• In process control, Setpoint (SP) is defined as?
• A Resolver is best described as?
• Split Range Control means?
• Which Delta Electronics PLC series is commonly used for general automation tasks?
• Which property is used by humidity sensors to determine moisture levels in materials?
• In distillation, what is the process of condensing vapor and returning the condensate to the original system called?
• Which protocol allows a host to obtain its network configuration automatically?
• What is the primary role of Digital Valve Control (DVC)?
• OL stands for which term in control systems?
• Which option correctly describes a MAC address's role?
• Which statement describes a temperature-sensing element based on resistance?
• Which statement best describes a DCS in process control?
• Which component primarily dissipates heat from electronic components?
• Which Allen-Bradley model line was widely used in older systems for mid-range control?
• What makes the needle in a gauge move?
• DVC stands for which term?
• What is a conductivity probe used for in a tank?
• Convert 102 decimal to hexadecimal.
• In the context of fluid flow, which dimensionless number helps predict flow regime independent of scale?
• A Reverse Action controller has which relationship between input and output?
• What color is the positive wire on a thermocouple?
• Which Siemens S7-3x series is known for modular CPUs and extensive I/O?
• In level measurement, pressure is equal to the product of height and what property?
• What signal does a pH probe output?
• RTD stands for?
• Which Schneider Electric Modicon model is commonly used for mid-range applications?
• Which statement correctly describes the difference between hydraulic and pneumatic cylinders?
• BCD display stands for which term?
• What is a Fluke LinkRunner and what does it do?
• What does a variable area flow meter do?
• Static head is defined as what in a fluid system?
• Why would a 250 ohm resistor be in a loop?
• What is a Variable Frequency Drive (VFD) used for?
• What does an Analyzer do?
• Which Siemens series is programmed using STEP 7 in traditional environments?
• Valve Packing is used to do what?
• What is the key difference between ultrasonic and DP level sensors?
• Which statement about heat transfer by conduction is true?
• Which of the following is a valid level measurement transmitter listed in the material?
• Prox is short for which device?
• In a 0-100 ft tank with a specific gravity of 0.8, what is the highest level measurable?
• Which pair of mechanisms describes the two primary modes of heat transfer in most engineering systems?
• In instrumentation, a dry leg is used to protect an instrument from which problem?
• What is an optocoupler used for?
• Which of the following lists the correct thermocouple types?
• Which statement correctly describes an endothermic reaction?
• Which Siemens PLC is designed for small to mid-size automation projects and commonly programmed with TIA Portal?
• The triple point of water is the temperature and pressure at which water coexists as which phases?
• Which device property is used to uniquely identify network-connected devices?
• Which describes radiation in heat transfer?
• What defines a ground loop?
• What is a protocol?
• BTU stands for British Thermal Unit.
• Which statement about a valve control system is true according to the given definitions?
• BTU stands for?
• How does a differential-pressure transducer measure flow?
• Which term describes flow with random variations in pressure?
• In PLC terminology, an OSR (one-shot rising) is true for how long?
• Which Allen-Bradley line is for small-scale control like MicroLogix?
• The DIN rail is best described as which of the following?
• Which statement correctly describes an endothermic reaction?
• Split Range Control means?
• Zero Elevation refers to mounting condition which?
• Which statement correctly describes the relationship between loop diagrams and P&IDs?
• How should a mag flowmeter be installed?
• ControlNet is best described as which of the following?
• Siemens TIA stands for which phrase?
• What does viscosity measure?
• Which device measures humidity by detecting moisture-related changes in materials?
• What is the difference between a motor starter and a contractor?
• In distillation, reflux is defined as which of the following?
• As the temperature of a liquid increases, its density:
• NIST Traceable indicates what?
• Which of the following are thermocouple types?
• What best describes a proximity sensor?
• How do you reverse the direction of a three-phase motor?
• The standard needs to be _____ times more accurate than the tool being calibrated.
• Which Rockwell Automation PLC family is designed for large-scale processes and has scalable architecture?
• What defines a direct acting controller?
• Which Rockwell Automation PLC family is commonly used for high-speed motion control?
• What is the primary function of a temperature transmitter?
• Which describes turbulent flow?
• Which frame remains stationary in space as the robot arm moves?
• In distillation, what is reflux?
• Which brand's PLC line includes the FX series and is widely used in Asia?
• Direct motion command primarily does what?
• Direct motion command is most closely associated with which component?
• Zero Suppression refers to which mounting condition?
• Which statement about Reynolds number is true?
• Which instrument is described as balancing hydrostatic pressure with a gas source to measure liquid level?
• Which device is used to test and verify the physical and data link layers of a network?
• What is an economizer?
• Which description best defines the UPS?
• Which Mitsubishi PLC series includes the FX line and is used for mid-range automation?
• What does ping do in networking?
• What is an example of a final control element?
• What does a sinking input or output do?
• Which statement describes a characteristic of pneumatic actuation?
• What is the role of an actuator?
• For a Coriolis meter, the tubing is oscillated at what angle to the flow?
• Cavitation is best described as which of the following?
• What is an actuator?
• Which instrument is used to measure mass flow?
• A Resolver is described as which of the following?
• What is a deadweight tester used for?
• What best describes synchronous and asynchronous I/O modems?
• Which statement about pressure switches is true?
• Which statement best describes the difference between an AC drive and a servo drive?
• Which statement accurately defines a heat exchanger?
• Two states of a controller?
• What is the forward voltage drop across a silicon diode?
• Which statement best defines Fieldbus?
• Binary Coded Decimal uses groups of four bits to represent decimal numbers.
• How do you convert psig to psia?
• In a process control loop, the final element is typically a valve or damper used to control what?
• In process control, a process variable is defined as which of the following?
• CR1 stands for what?
• OSHA stands for which description?
• In a differential-pressure flow measurement, what physical quantity does the DP transmitter compare to infer flow?
• Which statement is correct regarding PSI to water and Hg?
• What does a Final Control Element do?
• What is the primary purpose of an O2 sensor in a boiler stack?
• Which device interfaces a temperature sensor to a measurement or control device?
• Which device converts current into pressure as part of a control signal?
• DCS stands for which term?
• What is a Tool frame?
• Which Omron PLC model family includes the CJ series?
• Reynolds number is used to determine what?
• In instrumentation, a dry leg is used to protect an instrument from which problem?
• What is the primary function of a pH probe, and what is its typical output?
• What is the key difference between regular and smart transmitters?
• DHCP stands for which protocol?
• Which term describes mounting a transformer above the bottom of the tank?
• Laminar flow describes which pattern?
• A MAC address is what?
• Which statement describes an OSR in PLCs?
• ControlNet is best described as which of the following?
• How does a pressure switch operate?
• In a wiring diagram, T1-T3 stands for?
• DeviceNet is defined as which of the following?
• Which option correctly describes radiation?
• ORP stands for oxidation-reduction potential. Which statement correctly identifies ORP?
• Which statement best describes the function of a positioner in control systems?
• What is the standard output characteristic of a pH sensing device in millivolts?
• Which device is used to reduce energy consumption in HVAC by reclaiming energy?
• Which Allen-Bradley PLC family is intended for scalable mid-to-large automation and supports EtherNet/IP?
• Which of the following is NOT a type of level measurement transmitter?
• A bubbler tube is a level measurement instrument where gas is slowly fed into the bubbler system until the pressure equals what?
• Which statement best defines convection as a heat transfer mode?
• Which statement correctly contrasts P&ID diagrams and loop diagrams?
• A manometer is a device used for what purpose?
• In a P&ID, the first letter J stands for which term?
• Steam is measured in which units?
• Valve Packing function is to?
• What is reflux in a distillation column?
• Which pair correctly describes the basis of measurement for ultrasonic versus DP level sensing?
• Specific gravity is defined as the ratio of a fluid's density to the density of which reference?
• ORP measures oxidation-reduction potential. Which statement is true?
• Which set of temperature scales are correct?
• What is the function of a heatsink in electronic equipment?
• Which brand offers the CJ2 series PLC?
• What does K1 stand for?
• Which term describes mounting a transmitter below the bottom of a tank?