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NCCER INSTRUMENTATION EXAM QUESTIONS WITH CORRECT SOLUTIONS – LATEST 2024/2025
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NCCER INSTRUMENTATION EXAM QUESTIONS WITH CORRECT SOLUTIONS – LATEST 2024/2025
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1NCCER
NCCER INSTRUMENTATION EXAM QUESTIONS
WITH CORRECT SOLUTIONS – LATEST 2024/2025
Regardless Of The Level Of Power Being Controlled By A Relay, The Activation
Of The Relay Is Accomplished By A ---- Power Level Signal - Ans ✓Lower
Relays That Are A Combination Of Electromechanical And Solid State
Technology Are Known As ------ - Ans ✓Hybrid Relays
Reed Relays Are Used In Applications Requiring All Of The Following
Characteristics Except? - Ans ✓High Current
Relays That Are Often Referred To As Throwaway Relays Are _____ Relays -
Ans ✓General Purpose Plug In
The Primary Difference Between A Reed Switch And A Reed Relay Is _____ -
Ans ✓Reed Relays Contain Their Own Coil And Reed Switches Depend On An
External Magnetic Field To Operate
Latching Types Of General Purpose Relays Typically Have ______ Coils - Ans
✓Two
Electrometrical Control Relays Are Used In All Of The Following Functions
Except _____ - Ans ✓High Speed Power Switching
A Disadvantage Associated With Solid State Relays Is______ - Ans ✓Current
Leakage
In A Solid State Relay, An Led Converts Electrical Energy Into _______ - Ans
✓Light Energy
NCCER
, 2
NCCER
The Force Balance Principle Is Most Commonly Used In Pneumatic ______ - Ans
✓Transmitters
Using Pneumatic Input Signals As Operands, Computing Relays Perform ______
Functions - Ans ✓Mathematical
Pneumatic Selector And Limiter Relays Work On The Principle Of Satisfying A
Pre-Set ______ - Ans ✓Pressure Setting
One Disadvantage Of An Oil Pot Timing Relay Is That The Timing May Be
Eratic If _______ - Ans ✓The Piston Is Not Allowed To Make A Full Return To The
Bottom Of The Dash Pot
Clock Mototrs On Time Switches Are Typically _______ - Ans ✓Ac Synchronous
Motors
Switching Functions In A Solid State Timer Are Provided By _______ - Ans
✓Scrs
Another Name For A Sensor Is A ----- - Ans ✓Detector
The Device Principle Of An Rtd Is That Resistance Varies Linearly With ------- -
Ans ✓Temperature
A Device That Converts One Form Of Input Signal To Another Form Of Output
Signal Is Caled A ------ - Ans ✓Transducer
Sending A Signal From One Location To Another, Usually Involving Some
Distance, Is The Job Of A ---- - Ans ✓Transmitter
NCCER
, 3
NCCER
The Measurement Of Repeatability Of An Instrument Is Referred To As----- -
Ans ✓Precision
The First System Element That Responds Quantitively To The Measured
Variable And Preforms The Initial Measurement Operation Is A ------ - Ans
✓Detector
An Orifice Plate Is Normally Mounted ----- - Ans ✓Between Two Flanges
A ---- Provides Maximum Accuracy When Detecting Flow In Fluids That
Contain Larger Amounnts Of Suspended Solids Such As Slurries - Ans ✓Venturi
Tube
In A Magnetic Flowmeter, The Process Fluid ----- - Ans ✓Acts As The Moving
Conductors
A Bourdon Tube Must Be Fabricated From Amaterial That Has Elastic
Properties So That It ----- - Ans ✓Can Deform Under Pressure
The Deflection Characteristics Of A Metal Diaphragm Pressure Device Can Be
Somewhat Improved By ---- - Ans ✓Corrugating The Surface
The Us Of Metallic Bellows Has Been Most Successful In The ----- Pressure
Range - Ans ✓0.5 To 75 Psig
When Measuring Differential Pressure With An Instrument That Is Equipped
With A Capacitance Pressure Sensor, ---- Is Applied To Isolating Diaphragm A -
Ans ✓The Pressure To Be Measured
In A Diaphragm Seal Detector, The Space Between The Sealing Diaphragm And
The Sensor Are Filled With A Suitable Liquid Whose Pressure Duplicates ----- -
Ans ✓The Pressure Of The Process Side
NCCER
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