NCCER Actual Exam All Questions and Correct
Answers Already Graded A+ Latest And Fully
Covered Update With Verified And Well
Elaborated Solutions assured Pass
A technology bypassing conventional I/O by using direct communications between
smart field devices and associated control processors is:
SCADA
WAN
Peer-to-peer
Fieldbus - **ANSWER**: Fieldbus
In a test of the accuracy of a pneumatic comparator with a pressure gauge, pressure
readings of the test gauge and the gauge being tested are compared at a number of
test points. Test points readings are made:
Only as the pressure is slowly increased
Only as the pressure is slowly decreased
In no particular sequence
As the pressure is both increased and decreased - **ANSWER**: As the pressure
is both increased and decreased
Mass flow measurement requires accurate values is:
Volumetric flow
Temperature
,Pressure
All of the above - **ANSWER**: All of the above
When a sensor is inserted in a thermowell, which of the following could safely
improve response to temperature changes?
Mercury
Antifreeze
Copper strips
Magnesium oxide particles - **ANSWER**: Antifreeze
What type of transducer converts the variable being measured into a voltage
generated by a crystal when it is mechanically stressed?
Reluctive
Piezoelectric (used in DP cells)
Inductive
Capacitive - **ANSWER**: Piezoelectric (used in DP cells)
A gage pressure of 195 psi is roughly what in psia?
151
164
178
210 - **ANSWER**: 195 + 14.7=210 at sea level
,Which comment below does NOT describe a force-balance transmitter?
Is self-balancing
Output signal is proportional to process variable signal
Operates with a thrust rod
Has a force beam that pivots on a fulcrum - **ANSWER**: Operates with a thrust
rod
Changing the proportional band of a pneumatic controller changes:
The alignment of the controller
The position of the nozzle with respect to the baffle
The gain
The set point - **ANSWER**: The gain
If a proportional band is set so that 50% of the input gives a full range of output,
the proportional gain is:
0.5
4.0
1.0
2.0 - **ANSWER**: 2.0
A power supply component that reduces the ripple in the waveform is a :
Transformer
Rectifier
, Filter
Regulator - **ANSWER**: Filter
If water freezes at 32°F, what will it freeze at in degrees C?
-3.2
-14.7
0.0
25.6 - **ANSWER**: 0.0
Which of the following provides a warning when low and/or high limits of
optimum range are being approached?
Calibrating trim pots
Absolute alarm points
Variable set points
Range adjusters - **ANSWER**: Absolute alarm points
A device that converts alternating current to direct current is called a:
Rectifier
Ratio station
Differential amplifier
Comparator - **ANSWER**: Rectifier
Answers Already Graded A+ Latest And Fully
Covered Update With Verified And Well
Elaborated Solutions assured Pass
A technology bypassing conventional I/O by using direct communications between
smart field devices and associated control processors is:
SCADA
WAN
Peer-to-peer
Fieldbus - **ANSWER**: Fieldbus
In a test of the accuracy of a pneumatic comparator with a pressure gauge, pressure
readings of the test gauge and the gauge being tested are compared at a number of
test points. Test points readings are made:
Only as the pressure is slowly increased
Only as the pressure is slowly decreased
In no particular sequence
As the pressure is both increased and decreased - **ANSWER**: As the pressure
is both increased and decreased
Mass flow measurement requires accurate values is:
Volumetric flow
Temperature
,Pressure
All of the above - **ANSWER**: All of the above
When a sensor is inserted in a thermowell, which of the following could safely
improve response to temperature changes?
Mercury
Antifreeze
Copper strips
Magnesium oxide particles - **ANSWER**: Antifreeze
What type of transducer converts the variable being measured into a voltage
generated by a crystal when it is mechanically stressed?
Reluctive
Piezoelectric (used in DP cells)
Inductive
Capacitive - **ANSWER**: Piezoelectric (used in DP cells)
A gage pressure of 195 psi is roughly what in psia?
151
164
178
210 - **ANSWER**: 195 + 14.7=210 at sea level
,Which comment below does NOT describe a force-balance transmitter?
Is self-balancing
Output signal is proportional to process variable signal
Operates with a thrust rod
Has a force beam that pivots on a fulcrum - **ANSWER**: Operates with a thrust
rod
Changing the proportional band of a pneumatic controller changes:
The alignment of the controller
The position of the nozzle with respect to the baffle
The gain
The set point - **ANSWER**: The gain
If a proportional band is set so that 50% of the input gives a full range of output,
the proportional gain is:
0.5
4.0
1.0
2.0 - **ANSWER**: 2.0
A power supply component that reduces the ripple in the waveform is a :
Transformer
Rectifier
, Filter
Regulator - **ANSWER**: Filter
If water freezes at 32°F, what will it freeze at in degrees C?
-3.2
-14.7
0.0
25.6 - **ANSWER**: 0.0
Which of the following provides a warning when low and/or high limits of
optimum range are being approached?
Calibrating trim pots
Absolute alarm points
Variable set points
Range adjusters - **ANSWER**: Absolute alarm points
A device that converts alternating current to direct current is called a:
Rectifier
Ratio station
Differential amplifier
Comparator - **ANSWER**: Rectifier
