NCCER INSTRUMENTATION EXAM QUESTIONS WITH CORRECT VERIFIED SOLUTIONS 100% GUARANTEED PASS (LATEST UPDAT

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NCCER INSTRUMENTATION EXAM QUESTIONS PP P P P




WITH CORRECT VERIFIED SOLUTIONS 100% GU
P P P P P




ARANTEED PASS (LATEST UPDATE) P P P




Regardless of the level of power being controlled by a relay, the activation of
p p p p p p p p p p p p p p



the relay is accomplished by a ---- power level signal - ANS ✓lower
p p p p p p p p p p p p




Relays that are a combination of electromechanical and solid state technolo
p p p p p p p p p p



gy are known as ------ - ANS ✓hybrid relays
p p p p p p p p




Reed relays are used in applications requiring all of the following characteri
p p p p p p p p p p p



stics except? - ANS ✓high current
p p p p p




Relays that are often referred to as throwaway relays are _____ relays -
p p p p p p p p p p p p



ANS ✓general purpose plug in
p p p p p




The primary difference between a reed switch and a reed relay is _____ -
p p p p p p p p p p p p p



ANS ✓reed relays contain their own coil and reed switches depend on an external
p p p p p p p p p p p p p p p



magnetic field to operate p p p




Latching types of general purpose relays typically have ______ coils -
p p p p p p p p p p



ANS ✓two
p p




Electrometrical control relays are used in all of the following functions exce
p p p p p p p p p p p



pt _____ - ANS ✓high speed power switching
p p p p p p p




A disadvantage associated with solid state relays is______ -
p p p p p p p p



ANS ✓current leakage
p p p




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In a solid state relay, an LED converts electrical energy into _______ -
p p p p p p p p p p p p



pANS ✓light energy p p




The force balance principle is most commonly used in pneumatic ______ -
p p p p p p p p p p p



ANS ✓transmitters
p p




Using pneumatic input signals as operands, computing relays perform ______ f
p p p p p p p p p p



unctions - ANS ✓mathematical p p p




Pneumatic selector and limiter relays work on the principle of satisfying a p
p p p p p p p p p p p p



re-set ______ - ANS ✓pressure setting
p p p p p




One disadvantage of an oil pot timing relay is that the timing may be eratic if
p p p p p p p p p p p p p p p p



_______ - p



pANS ✓the piston is not allowed to make a full return to the bottom of the dash pot
p p p p p p p p p p p p p p p p p




Clock mototrs on time switches are typically _______ -
p p p p p p p p



ANS ✓AC synchronous motors
p p p p




Switching functions in a solid state timer are provided by _______ - ANS ✓scrs
p p p p p p p p p p p p p




Another name for a sensor is a ----- - ANS ✓detector
p p p p p p p p p p




The device principle of an RTD is that resistance varies linearly with ------- -
p p p p p p p p p p p p p



ANS ✓temperature
p p




A device that converts one form of input signal to another form of output sig
p p p p p p p p p p p p p p



nal is caled a ------ - ANS ✓transducer
p p p p p p p




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Sending a signal from one location to another, usually involving some distan
p p p p p p p p p p p



ce, is the job of a ---- - ANS ✓transmitter
p p p p p p p p p




The measurement of repeatability of an instrument is referred to as----- -
p p p p p p p p p p p



ANS ✓precision
p p




The first system element that responds quantitively to the measured variabl
p p p p p p p p p p



e and preforms the initial measurement operation is a ------ - ANS ✓detector
p p p p p p p p p p p p




An orifice plate is normally mounted ----- - ANS ✓between two flanges
p p p p p p p p p p p




A ---- p



provides maximum accuracy when detecting flow in fluids that contain larg
p p p p p p p p p p p



er amounnts of suspended solids such as slurries - ANS ✓venturi tube
p p p p p p p p p p p




In a magnetic flowmeter, the process fluid ----- -
p p p p p p p p



pANS ✓acts as the moving conductors
p p p p p




A bourdon tube must be fabricated from amaterial that has elastic propertie
p p p p p p p p p p p



s so that it ----- - ANS ✓can deform under pressure
p p p p p p p p p p




The deflection characteristics of a metal diaphragm pressure device can be s
p p p p p p p p p p p



omewhat improved by ---- - ANS ✓corrugating the surface
p p p p p p p p




The us of metallic bellows has been most successful in the -----
p p p p p p p p p p p



pressure range - ANS ✓0.5 to 75 psig
p p p p p p p p




When measuring differential pressure with an instrument that is equipped
p p p p p p p p p p



with a capacitance pressure sensor, ---- is applied to isolating diaphragm A -
p p p p p p p p p p p p



ANS ✓the pressure to be measured
p p p p p p




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