NCCER INSTRUMENTATION EXAM|| QUESTIONS AND
CORRECT DETAILED ANSWERS ||VERIFIED
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To accurately measure liquid level in a closed tank under
pressure, use a:
A. Bubbletube
B. Diaphragm box
C. Float cable
D .Dp transmitter - ANSWER-D .Dp transmitter
OSHA requires that existing conditions be tested or
inspected before beginning work on electrical equipment
by using a:
A. Multimeter
B. Voltage calibrator
C. Megger
D . Amp probe - ANSWER-A. Multimeter
Weight is defined as:
A. The amount of matter in an object
B. The force exerted by a mass due to gravity
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C .How much mass a body has
D. The rate at which a mass is accelerated - ANSWER-B.
The force exerted by a mass due to gravity
Deadband in a switch refers to the:
A. A range of process changes before switch actuation
B. Range of setpoint repeatability
C. Allowable overshoot of a set point
D. Range of process change between actuation point and
reset - ANSWER-A. A range of process changes before
switch actuation
The adjustment that allows pressure contacts to reset is
called the:
A. Set point
B. Reset point
C .Deadband
D. Operating range - ANSWER-B. Reset point
The value of the dynamic variable desired in a process is
the:
A. Signal
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B . Setpoint
C. Resolution
D. Specific gravity - ANSWER-B . Setpoint
A nuclear measuring device is typically used to measure:
A . Level
B. Temperature
C. Pressure
D. pH - ANSWER-A . Level
What does a solenoid valve do?
A. Opens and closes valves
B. Serves as a actuator to open and close pneumatic and
hydraulic valves
C.Transforms volts to millivolts
D. Actuates to open and close terminal blocks - ANSWER-
B. Serves as a actuator to open and close pneumatic and
hydraulic valves
What is the psi reading on MOST gauge pressure
indicators at atmospheric pressure ?
A. 100
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B. 10
C. Zero
D. Below zero - ANSWER-C. Zero
Proportional control is also known as:
A. Derivative control
B. Reset control
C. Gain control
D. On-off control - ANSWER-A. Derivative control
The documentation required ot loop check and
commission are:
A. P&ID, loop diagrams, and instrument specification
sheets
B. P&ID and electrical drawings
C. Electrical drawings and typical installation detail sheets
D. Logic diagrams, loop sheets, and instrument operation
manuals - ANSWER-A. P&ID, loop diagrams, and
instrument specification sheets
In an instrument loop, where would wet instrument air
show up first?