EPRI A Exam 3 Questions With 100% Correct Answers | Verified | Updated 2024, Exams of Advanced Education

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EPRI A Exam 3 Questions With 100% Correct Answers | Verified | Updated 2024 thermistors - Correct Answer-temperature transducers constructed from semiconductor material Optical pyrometers can measure blank to determine the temperature of a hot surface - Correct Answer-infrared radiation a temperature sensing element that provides temperature information in the form of a change in the resistance of the metal wire element, often platinum, as a function of temperature - Correct Answer-RTD which of the following applies to an RTD - Correct Answer-operation is based on direct relationship between the electrical resistance in Milli voltage as a speed velocity of a fluid increases through a restriction, the static pressure blank - Correct Answer-decreases the output of a Target flow meter is proportional to - Correct Answer-the square root of volumetric flow rate because flow rate is the square root of the pressure drop across a restriction, it is usually necessary to extract the square root linearize the output of an orifice meter when - Correct Answer-a square root extractor is in the loop rotor speed in a turbine meter is proportional to - Correct Answer-fluid flow rate which dimension of an orifice plate is most critical - Correct Answer-the an open Channel flow measurement device often used to measure the flow of Wastewater in a ditch or Canal from an industrial site is - Correct Answer-weir to change the 4 to 20 milliamp analog signal from a transmitter to the signal required by a digital controller a blank must be part of the instrument single Loop - Correct Answer- a\d converter a Pneumatic valve without a positioner is the final control element in an instrument Loop the transmitter in the controller are both electronic in order for this control system to operate, a must be installed any instruments signal line between the controller and the control valve - Correct Answer-i/p transducer which of the following instrument transmission signals would be least affected by a lightning storm - Correct Answer-fiber optics which of the following instrument transmission signals usually has the most dead band in the slowest response when in the transmitters located thousand feet or more from the receiving instrument - Correct Answer-pneumatic transmitters output must be adjusted to the blank of the measured variable - Correct Answer-range transmitter gain should be blank over its entire range - Correct Answer-constant the zero output from a Pneumatic transmitter is normally 3 PSI the zero output from an electronic transmitter is normally for milliamps these instruments have a live 0 - Correct Answer-to ensure accurate zero adjustment when calibrating a mechanical link are lever instrument such as a pressure gauge which adjustment is usually made first - Correct Answer-span which of the following is usually adjusted first when calibrating an electronic pressure transmitter - Correct Answer-zero the pressure switch normally produces a - Correct Answer-discrete output and install two wire electronic flow transmitter normally receives power from a - Correct Answer-an auxiliary 24 volt DC power supply electrical noise is a real problem in instrument Loop performance when it - Correct Answer-is induced on the loop signal wires a transmitter is called smart because it - Correct Answer-can communicate digitally with any other instrument regardless of the manufacturer if it becomes necessary to rearrange a smart transmitter the configuration interface device is connected to the transmitter output signal circuit - Correct Answer-in parallel with the receiving instrument connected if it changes process conditions make it necessary to rearrange a smart transmitter the instrument technician - Correct Answer-connect a handheld Communicator and rearrange the transmitter set smart transmitters blank they may contribute significantly to Personnel safety - Correct Answer-can be rearranged remotely and instrumentation the term Loop usually defines - Correct Answer-combination of two or more interconnected instrument the term primary element usually refers to - Correct Answer-detectors and sensors which of the following should never be connected to an energized circuit - Correct Answer-oscilloscope Transit a transistorized DC power amplifier with bipolar Supply is checked with an 8 on resistive load when the unit is turned on and immediately blows a fuse when the fuses replaced in the unit is turned back on and with the low disconnected the fuse does not blow what is the probable cause of the power supply problem - Correct Answer-a rectifier diode is shorted to make accurate measurements with a blank the circuit connections must be broken - Correct Answer-logic analyzer the time constant first order lag in a transmission system it is time necessary after dead time following and upset for the response curve to reach blank of its final value - Correct Answer-63.2% blank is generally accepted as an 8-bit segment of a computer word - Correct Answer-a byte the Earth's rotational effect on a mass is called the - Correct Answer-rotational effect which of the following can be used to calibrate a 0 to 800 PSI - Correct Answer-dead weight tester atmospheric pressure varies with weather conditions and - Correct Answer-elevation specific gravity is a dimensionless number derived by comparing the process fluid to - Correct Answer-water or air as temperature of a liquid increases its density - Correct Answer-decreases idevice bonded to an elastic element that changes electrical resistance in response to deformation of the element By changes in pressure is called a - Correct Answer-strain gauge the statement of body immersed in a liquid will be buoyed up by force equal to the weight of the displaced liquid describes - Correct Answer-constant displacement hydrostatic Head Way radioactive properties that density and Sonic detectors are all blank methods of level measurement - Correct Answer-inferential load cells and strain gauges measure the amount of material in a tank by measuring - Correct Answer-weight when contacted the level measuring instrument with a process fluid is undesirable it may be feasible to use blank level measurement technology - Correct Answer-ultrasonic the response of a field bulb thermal system to an increase in temperature is - Correct Answer-an increase in fill fluid pressure thermocouples can be connected in parallel sides that are outputs can be used a measurement of - Correct Answer-average temperature