NCCER TEST QUESTIONS AND
ANSWERS
Wally Boxes generate dry, regulated instrument air. True or False. - Answer-True
If you apply and hold a steady 100" H2O to the high side of a DP transmitter and open
the equalizer valve, the low-side pressure will read __________. - Answer-25" H2O
The bulb serves as a ________ in a temperature transmitter installation that uses a gas-
filled-tube-and-bulb system. - Answer-transducer
In a Foxboro® 12A Series transmitter, the zero
can be elevated but not suppressed. True or False. - Answer-True
A(n) ________ signal is continuously variable with time. - Answer-Analog
DP transmitters measure ______ when used for liquid level applications. - Answer-
Pneumatic differential pressure
Pressure above the upper level of a liquid in a
closed tank or vessel affects the pressure measured at the bottor of the vessel. True or
False. - Answer-False
A smart transmitter incorporates a ________ that stores data. - Answer-microprocessor
The Fluke® Model 725 multifunction process
calibrator can also be used to measure differential pressure as long as an accessory
differential pressure module is used along with it to
convert the differential pressure to a compatible signal for the calibrator. True or False. -
Answer-False
A calibration test that simulates the input and
measures the output is sufficient to verify the
overall accuracy of a smart instrument. True or False. - Answer-True
The __________ component of a fiber-optic cable
transmits the light. - Answer-core
An OTDR is used to test fiber-optic cable by
sending a light source through the cable's core
and visually looking for the light at the other
end of the cable. True or False. - Answer-True
When proving a loop, you should always sim-
ANSWERS
Wally Boxes generate dry, regulated instrument air. True or False. - Answer-True
If you apply and hold a steady 100" H2O to the high side of a DP transmitter and open
the equalizer valve, the low-side pressure will read __________. - Answer-25" H2O
The bulb serves as a ________ in a temperature transmitter installation that uses a gas-
filled-tube-and-bulb system. - Answer-transducer
In a Foxboro® 12A Series transmitter, the zero
can be elevated but not suppressed. True or False. - Answer-True
A(n) ________ signal is continuously variable with time. - Answer-Analog
DP transmitters measure ______ when used for liquid level applications. - Answer-
Pneumatic differential pressure
Pressure above the upper level of a liquid in a
closed tank or vessel affects the pressure measured at the bottor of the vessel. True or
False. - Answer-False
A smart transmitter incorporates a ________ that stores data. - Answer-microprocessor
The Fluke® Model 725 multifunction process
calibrator can also be used to measure differential pressure as long as an accessory
differential pressure module is used along with it to
convert the differential pressure to a compatible signal for the calibrator. True or False. -
Answer-False
A calibration test that simulates the input and
measures the output is sufficient to verify the
overall accuracy of a smart instrument. True or False. - Answer-True
The __________ component of a fiber-optic cable
transmits the light. - Answer-core
An OTDR is used to test fiber-optic cable by
sending a light source through the cable's core
and visually looking for the light at the other
end of the cable. True or False. - Answer-True
When proving a loop, you should always sim-
