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NCCER REVIEW EXAM Q&A
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NCCER REVIEW EXAM Q&A
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NCCER REVIEW EXAM Q&AWhat instrument drawing shows an actual representation of a process operating
sequence? - Answer-P&ID
Old packing should be replaced with new packing is: - Answer-In kind
For most tube bender radius blocks, a 90 degree bend gains approximately _____? -
Answer-1 1/2 tube diameter
Where are rubber gaskets used? - Answer-In a low pressure/ low temperature systems
The process parameter that is selected for control is called the : - Answer-Controlled
variable
What is the purpose of the P&ID? - Answer-Shows instrument location as it's related to
the process
When replacing a control valve "in kind", what is the least important? - Answer-Location
of signal ports
Smart instrument transmitters require which of the following for calibration and
configuration? - Answer-Communicator
What is the purpose of an I/P in a control loop? - Answer-Converts the controllers
electrical signal to a control pressure
How many inches of WC are 3 psig? - Answer-83.04" wc
In controller, automatic control describes: - Answer-The final control element responding
to the error signal or change in process
What is the circuit current if 454 VDC is applied to a 250 ohm load? - Answer-1.8 amp
An orifice plate causes a pressure drop which can be measured calculate: - Answer-
Flow
Cable shields should be connected to the: - Answer-Ground at each accessible location
Cleaning of piping and tubing is generally required after all of the following EXCEPT: -
Answer-Modification
A valve has linear flow characteristics when the: - Answer-Flow corresponds directly to
the valve stem position
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