Instrumentation (INS) Practice Test

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• Which statement best summarizes the difference between hydraulic and pneumatic cylinders?
• Which instrument is used to measure humidity in the environment?
• Which statement correctly relates Zero Suppression and Zero Elevation in transmitter mounting?
• What is a Direct Motion Command?
• True or False: A Thermocouple is inductive.
• Which term corresponds to a safety valve designed for quick shutoff?
• What is power factor?
• What does K1 stand for on a P&ID Diagram?
• In a differential-pressure flow meter, what is measured to infer flow rate?
• What is an OSR in PLC terms?
• What does a Sourcing Circuit do in an electrical system?
• Intrinsically Safe means what?
• Identify the component described as a safety valve designed for quick shutoff.
• In a Direct Acting Controller, how does the output respond to changes in input?
• Which gauge component relies on a Bourdon tube to move the needle?
• What describes the primary purpose of reflux in a distillation column?
• What is the primary function of a Digital Valve Controller (DVC)?
• What is a Wet Leg?
• Which statement best describes the difference between a motor starter and a motor contactor?
• Valve packing is installed around which part of a valve?
• L1-L3 stands for what in electrical terminology?
• In fluid testing, viscosity refers to what?
• How does a pressure switch operate?
• What is a UPS and what does it do?
• Which description best defines a BCD display?
• Which sequence correctly represents a simple wiring diagram linking a controller, recorder, and a valve positioner in series?
• Which form of heat transfer occurs via electromagnetic waves?
• Which statement describes a common symptom of cavitation in a pump?
• Power factor is defined as which ratio?
• Which network is described as a byte-wide network that can support up to 64 nodes and up to 2048 field I/O devices?
• Power factor equals which ratio?
• In a simple current loop containing a transmitter, a power supply, a recorder, and a controller, which sequence correctly represents the series connection starting from the power supply positive terminal?
• In process instrumentation, flashing occurs when which condition is met?
• What are the two states of a controller?
• Which term describes the dependent variable in a process to be controlled?
• What does ORP stand for?
• Reynolds Number is used to determine what aspect of fluid flow?
• What is the primary function of a data recorder in a process control system?
• Which description defines an endothermic reaction?
• What is a Manometer used for?
• What is the triple point of water?
• Identify the device defined as a safety valve designed for quick shutoff.
• Turbulent Flow is best described as which of the following?
• What does NIST Traceable indicate?
• How does a differential pressure transmitter measure flow?
• Which device is a heat exchanger used to reduce energy consumption?
• Which term corresponds to a safety valve designed for quick shutoff?
• Which description correctly defines power factor?
• What is a thermocouple?
• Which device is an example of a Final Control Element?
• What does a sinking circuit do?
• Which are three temperature scales?
• What is Reflux in a distillation column?
• What is the primary purpose of a valve positioner in a control loop?
• What is the primary purpose of a loop diagram in instrumentation?
• How does a DP flow meter work?
• How do you reverse the direction of a 3-phase motor?
• What distinguishes a smart transmitter from a regular transmitter?
• What is an actuator?
• Which statement accurately describes the relationship between a Distributed Control System (DCS) and a Digital Valve Controller (DVC)?
• What is a Fluke LinkRunner and what does it do?
• OSR stands for which PLC concept?
• Which statement best describes the Dry Leg in instrumentation?
• As the temperature of a liquid increases, its density tends to do what?
• What is a Variable Area Flow Meter? What is an example of one?
• DinRail can be described as which of the following?
• A 0-100 foot tank with a specific gravity of 0.8 has the highest measurable level. What is that level?
• What does static head refer to in fluid pressure terms?
• What does a pH probe do? What is its output?
• What does an O2 sensor in a boiler stack do?
• What is a Tool Frame in robotics?
• OSHA and what do they do?
• Which combination of states does water co-exist with at its triple point?
• Why would a 250 ohm resistor be included in an instrumentation loop?
• Which combination of thermocouple types is commonly used for temperature sensing?
• What does a Final Control Element do?
• Which diagram shows wiring between transmitters and controllers in a control loop?
• Which term describes a device that detects objects without physical contact and is commonly used in automation?
• In process instrumentation, flashing refers to which of the following?
• Power factor can be described as which ratio?
• Which device is used to manually override the servo motor control to run the motor manually?
• How do you convert psiA to psiG according to the material?
• What does T1-T3 stand for in instrumentation terminology?
• Cavitation damage typically affects which pump components?
• Which statement is true about hydraulic cylinders compared to pneumatic cylinders?
• To prevent missing counts when a digital input fires every 20 ms on a PLC, which component should be used?
• Which statement is NOT a typical level measurement transmitter type?
• What is an Economizer?
• Which device interfaces a temperature sensor to a measurement or control device?
• Which level measurement device uses gas injection to balance hydrostatic head?
• Which statement best describes a heat exchanger?
• What is a heat exchanger?
• Zero Elevation occurs when a transmitter is mounted where?
• In hydrostatic level measurement, pressure at the bottom is proportional to which product?
• What is a Hygrometer?
• O.L is used to protect components from which condition?
• L1-L3 stands for lines 1-3 in three-phase systems. Which option correctly identifies this?
• Which term corresponds to a safety valve designed for quick shutoff?
• Which statement best describes the setpoint?
• DeviceNet is described as which of the following?
• How is Fieldbus best described?
• Turbulent flow is best described as which?
• Which term is defined as a safety valve designed for quick shutoff?
• An I/P transducer performs what function?
• What does a prox refer to in instrumentation?
• Which device is defined as a sensor able to detect objects without physical touch?
• The Dry Leg in instrumentation is used to protect process instruments by containing what?
• What is the difference between an AC Drive and a Servo Drive?
• Which option correctly describes OSR in PLCs?
• Which statement best characterizes ControlNet?
• What is Cascade Control?
• Which device makes or breaks contacts when a set pressure is reached?
• Which statement best describes the function of a Temperature Transmitter?
• What is a deadweight tester used for?
• Zero Elevation refers to mounting the transmitter at which position relative to the tank bottom?
• What is a User Frame?
• Which statement about synchronous modems is true?
• In a motor control system, which parameters does a Variable Frequency Drive primarily vary to control speed?
• Which device provides power in an emergency when main power is lost?
• What is cavitation in pumping systems?
• In an 0-10 V analog input card with 8-bit resolution, what is the voltage increment per step?
• In process instrumentation, steam flow is typically measured in which units?
• Which device is described as a safety valve designed for quick shutoff?
• What does RTD stand for in temperature measurement?
• What does Siemens TIA stand for?
• What is a Variable Frequency Drive (VFD)?
• What best describes a Coriolis flowmeter?
• What color is the negative wire of a thermocouple?
• What is power factor?
• What is a heat sink?
• In a current loop, what indicates a transmitter fault when monitoring the loop current?
• In automation terminology, what is an Indexer?
• What does a thermocouple output depend on?
• Which statement best defines conduction?
• DP level sensors determine level by measuring which principle?
• A resolver is best described as which of the following?
• What is a setpoint?
• Which term is defined as a safety valve designed for quick shutoff?
• What is a protocol?
• Which instrument is described as a network multimeter used for troubleshooting and testing the physical and data link layers?
• What is Split Range Control?
• What is a Thermowell?
• Power factor is defined as which of the following?
• Why would you use a live bottom (4-20 mA) rather than a true bottom (0-20 mA) in a loop?
• Which component is a closed tube designed to protect temperature instruments from process conditions and allows maintenance without draining the process fluid?
• Which statement best describes ultrasonic level sensors compared to differential pressure level sensors?
• What does ORP stand for in chemical measurements?
• What is the function of an Analyzer in a process?
• On a pH curve, a change of one pH unit corresponds to what factor change in hydrogen ion concentration?
• A resolver is best described as which of the following?
• Where should a MAG Flow Meter be mounted in typical installations?
• Zero Suppression occurs when a transmitter is mounted where?
• BTU is defined as what?
• The DP Transmitter measures flow by detecting which signal?
• How does a DP Transmitter measure flow?
• What is the primary role of a Distributed Control System (DCS) in process automation?
• Which device is used to measure level in a conductive fluid?
• What makes a needle in a gauge move?
• What is Specific Gravity?
• What are 3 types of level measurement/transmitters?
• What does Ping do?
• Valve packing is installed around which part of a valve?
• Which statement about P&ID diagrams is true?
• Convert 102 decimal to hexadecimal.
• What is a Material Mass Flow Meter?
• Intrinsic safety is designed to protect electrical equipment in which environment?
• What component is formed by two dissimilar metal wires welded at one end?
• What is the typical forward voltage drop across a silicon diode?
• A bubbler tube is used for level measurement by introducing gas until the pressure matches what?
• A BCD Display is defined as which concept?
• Viscosity is defined as which property of a fluid?
• MAC Address stands for?
• What does a reverse-acting controller do?
• What is a Ground Loop?
• ControlNet is best described as?
• Laminar Flow is described as which of the following?
• In a P&ID diagram, what does J stand for as the first letter?
• Which PLC models have we used?
• Which statement about the DP Flow Meter is correct?
• DinRail is described as?
• What is a conductivity probe used for?
• DHCP stands for?
• Which statement is true about pressure units?
• Convection is defined as?
• Which diagram shows physical connections between instruments in a process?
• What does CR1 stand for on a P&ID Diagram?
• What is O.L?
• Reynolds number is used to determine what aspect of fluid flow?
• Which option correctly expands the acronym DHCP?
• Radiation in energy transfer refers to?
• If the system pressure is 3 psi, approximately how many inches of water does that correspond to?
• The standard needs to be ______ times more accurate than the tool being calibrated.
• What distinguishes a sinking circuit from a sourcing circuit in industrial control?