Alberta Instrumentation Technician
Journeyperson Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. Which instrument is primarily used to measure pressure
differences?
a) Thermocouple
b) Strain gauge
c) Manometer
d) Flow meter
Manometers are specifically designed to measure pressure
differences between two points.
2. What is the purpose of a transmitter in an instrumentation
system?
a) To display values locally
b) To generate power
c) To convert a sensor signal to a standardized output
d) To filter noise
Transmitters take the signal from a sensor and convert it into a
format (e.g., 4–20 mA) that can be read by a control system.
3. Which signal type is commonly used in industrial process control?
a) Binary AC
b) Digital USB
c) 4–20 mA current loop
, d) HDMI
The 4–20 mA current loop is standard because it is resistant to
electrical noise and allows long-distance transmission.
4. What does a thermocouple measure?
a) Pressure
b) Temperature
c) Flow
d) Level
Thermocouples produce a voltage proportional to temperature
differences between two junctions.
5. In a 4–20 mA loop, what does 4 mA typically represent?
a) Maximum process value
b) Zero or minimum process value
c) Half-scale process value
d) Sensor error
4 mA is the standard “live zero” representing the minimum value
of the process variable.
6. Which type of level sensor operates by detecting the displacement
of a float?
a) Radar
b) Capacitance
c) Float switch
d) Ultrasonic
Float switches measure level mechanically via a buoyant float that
rises or falls with the liquid.
7. What is the main advantage of a differential pressure transmitter?
a) Measures high voltage
, b) Measures pressure difference directly
c) Reduces noise
d) Measures only temperature
Differential pressure transmitters are designed to measure the
difference between two pressure points, essential for flow or level
calculations.
8. Which type of flowmeter is best suited for conductive liquids?
a) Turbine
b) Ultrasonic
c) Magnetic
d) Orifice plate
Magnetic flowmeters rely on electromagnetic induction, which
requires a conductive fluid.
9. What is the function of a square root extractor in flow
measurement?
a) Linearizes pressure signals
b) Converts differential pressure to flow rate
c) Measures temperature
d) Amplifies signals
Flow through an orifice is proportional to the square root of
differential pressure; square root extractors linearize this
relationship.
10. Which device is used to isolate a sensor from high process
pressures?
a) Amplifier
b) Controller
c) Diaphragm seal
Journeyperson Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. Which instrument is primarily used to measure pressure
differences?
a) Thermocouple
b) Strain gauge
c) Manometer
d) Flow meter
Manometers are specifically designed to measure pressure
differences between two points.
2. What is the purpose of a transmitter in an instrumentation
system?
a) To display values locally
b) To generate power
c) To convert a sensor signal to a standardized output
d) To filter noise
Transmitters take the signal from a sensor and convert it into a
format (e.g., 4–20 mA) that can be read by a control system.
3. Which signal type is commonly used in industrial process control?
a) Binary AC
b) Digital USB
c) 4–20 mA current loop
, d) HDMI
The 4–20 mA current loop is standard because it is resistant to
electrical noise and allows long-distance transmission.
4. What does a thermocouple measure?
a) Pressure
b) Temperature
c) Flow
d) Level
Thermocouples produce a voltage proportional to temperature
differences between two junctions.
5. In a 4–20 mA loop, what does 4 mA typically represent?
a) Maximum process value
b) Zero or minimum process value
c) Half-scale process value
d) Sensor error
4 mA is the standard “live zero” representing the minimum value
of the process variable.
6. Which type of level sensor operates by detecting the displacement
of a float?
a) Radar
b) Capacitance
c) Float switch
d) Ultrasonic
Float switches measure level mechanically via a buoyant float that
rises or falls with the liquid.
7. What is the main advantage of a differential pressure transmitter?
a) Measures high voltage
, b) Measures pressure difference directly
c) Reduces noise
d) Measures only temperature
Differential pressure transmitters are designed to measure the
difference between two pressure points, essential for flow or level
calculations.
8. Which type of flowmeter is best suited for conductive liquids?
a) Turbine
b) Ultrasonic
c) Magnetic
d) Orifice plate
Magnetic flowmeters rely on electromagnetic induction, which
requires a conductive fluid.
9. What is the function of a square root extractor in flow
measurement?
a) Linearizes pressure signals
b) Converts differential pressure to flow rate
c) Measures temperature
d) Amplifies signals
Flow through an orifice is proportional to the square root of
differential pressure; square root extractors linearize this
relationship.
10. Which device is used to isolate a sensor from high process
pressures?
a) Amplifier
b) Controller
c) Diaphragm seal
