Nevada Industrial Instrumentation
Technician Certification Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which device is primarily used to measure fluid pressure in industrial
systems?
A. Thermocouple
B. Flow switch
C. Pressure transmitter
D. Tachometer
Answer: C
A pressure transmitter is specifically designed to convert pressure
measurements into an electrical signal for monitoring and control in
industrial applications.
2. What is the standard industrial signal range for most analog
instrumentation systems?
A. 0–5 V
B. 4–20 mA
C. 0–10 V
D. 1–5 mA
Answer: B
The 4–20 mA current loop is widely used because it resists electrical
noise and allows for accurate long-distance signal transmission.
3. Which instrument measures the rate of fluid flow in a pipeline?
A. Level switch
B. Flow meter
, C. Manometer
D. Recorder
Answer: B
A flow meter is designed to measure the volumetric or mass flow
rate of liquids and gases in industrial systems.
4. What is the primary function of a thermocouple?
A. Measure pressure
B. Measure flow
C. Measure temperature
D. Measure voltage
Answer: C
A thermocouple generates a voltage proportional to temperature
differences, making it suitable for temperature measurement.
5. Which component is used to isolate instrumentation signals from
electrical noise?
A. Relay
B. Fuse
C. Signal isolator
D. Transformer
Answer: C
A signal isolator prevents ground loops and reduces electrical
interference in sensitive measurement circuits.
6. What does PLC stand for?
A. Programmable Logic Controller
B. Process Level Circuit
C. Power Line Converter
D. Programmable Load Controller
Answer: A
A Programmable Logic Controller is an industrial computer used to
automate control processes.
7. Which device is commonly used to measure liquid level in a tank?
A. Pressure gauge
B. Level transmitter
C. Ammeter
D. Oscilloscope
, Answer: B
A level transmitter detects and converts liquid level into an electrical
signal for monitoring and control.
8. What is the purpose of a control valve?
A. Measure temperature
B. Regulate fluid flow
C. Increase voltage
D. Store energy
Answer: B
A control valve regulates flow, pressure, or temperature by adjusting
fluid passage within a system.
9. Which unit is used to measure electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: C
Resistance is measured in ohms, which indicates opposition to
electrical current flow.
10. What device is used to convert a physical measurement into an
electrical signal?
A. Transducer
B. Relay
C. Circuit breaker
D. Switch
Answer: A
A transducer converts physical quantities such as temperature or
pressure into electrical signals for instrumentation systems.
11. Which instrument is used to measure electrical current?
A. Voltmeter
B. Ammeter
C. Ohmmeter
D. Barometer
Technician Certification Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which device is primarily used to measure fluid pressure in industrial
systems?
A. Thermocouple
B. Flow switch
C. Pressure transmitter
D. Tachometer
Answer: C
A pressure transmitter is specifically designed to convert pressure
measurements into an electrical signal for monitoring and control in
industrial applications.
2. What is the standard industrial signal range for most analog
instrumentation systems?
A. 0–5 V
B. 4–20 mA
C. 0–10 V
D. 1–5 mA
Answer: B
The 4–20 mA current loop is widely used because it resists electrical
noise and allows for accurate long-distance signal transmission.
3. Which instrument measures the rate of fluid flow in a pipeline?
A. Level switch
B. Flow meter
, C. Manometer
D. Recorder
Answer: B
A flow meter is designed to measure the volumetric or mass flow
rate of liquids and gases in industrial systems.
4. What is the primary function of a thermocouple?
A. Measure pressure
B. Measure flow
C. Measure temperature
D. Measure voltage
Answer: C
A thermocouple generates a voltage proportional to temperature
differences, making it suitable for temperature measurement.
5. Which component is used to isolate instrumentation signals from
electrical noise?
A. Relay
B. Fuse
C. Signal isolator
D. Transformer
Answer: C
A signal isolator prevents ground loops and reduces electrical
interference in sensitive measurement circuits.
6. What does PLC stand for?
A. Programmable Logic Controller
B. Process Level Circuit
C. Power Line Converter
D. Programmable Load Controller
Answer: A
A Programmable Logic Controller is an industrial computer used to
automate control processes.
7. Which device is commonly used to measure liquid level in a tank?
A. Pressure gauge
B. Level transmitter
C. Ammeter
D. Oscilloscope
, Answer: B
A level transmitter detects and converts liquid level into an electrical
signal for monitoring and control.
8. What is the purpose of a control valve?
A. Measure temperature
B. Regulate fluid flow
C. Increase voltage
D. Store energy
Answer: B
A control valve regulates flow, pressure, or temperature by adjusting
fluid passage within a system.
9. Which unit is used to measure electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: C
Resistance is measured in ohms, which indicates opposition to
electrical current flow.
10. What device is used to convert a physical measurement into an
electrical signal?
A. Transducer
B. Relay
C. Circuit breaker
D. Switch
Answer: A
A transducer converts physical quantities such as temperature or
pressure into electrical signals for instrumentation systems.
11. Which instrument is used to measure electrical current?
A. Voltmeter
B. Ammeter
C. Ohmmeter
D. Barometer
