NCCER TEST QUESTIONS AND
ANSWERS
All instruments that provide a proportional output signal based on an input signal must
be _________. - Answer-calibrated
The minimum value of all operating ranges is never a value greater than zero. True or
False. - Answer-False
Setting the minimum output signal of a transmitter to proportionally represent the
minimum input value is referred to as _________. - Answer-zeroing the instrument
______ represents 50% of the span in a range of 50-250" H2O. - Answer-200" H2O
The Wally Box is a(n) _______ type of calibration equipment. - Answer-pneumatic
Calibration should always be performed with the instrument control loop isolated from
the process. True or False. - Answer-True
Differential pressure is the sum of the low-side pressure and the high-side pressure on
a DP transmitter. True or False. - Answer-True
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
ANSWERS
All instruments that provide a proportional output signal based on an input signal must
be _________. - Answer-calibrated
The minimum value of all operating ranges is never a value greater than zero. True or
False. - Answer-False
Setting the minimum output signal of a transmitter to proportionally represent the
minimum input value is referred to as _________. - Answer-zeroing the instrument
______ represents 50% of the span in a range of 50-250" H2O. - Answer-200" H2O
The Wally Box is a(n) _______ type of calibration equipment. - Answer-pneumatic
Calibration should always be performed with the instrument control loop isolated from
the process. True or False. - Answer-True
Differential pressure is the sum of the low-side pressure and the high-side pressure on
a DP transmitter. True or False. - Answer-True
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
