ISA CERTIFIED CONTROL SYSTEMS
TECHNICIAN (CCST) LEVEL I PRACTICE
EXAM QUESTION AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A INSTANT
DOWNLOAD PDF
1. The primary role of a Control Systems Technician is to:
A. Design new control algorithms
B. Program enterprise software
C. Maintain, troubleshoot, and repair control systems
D. Approve engineering drawings
Correct answer: Maintain, troubleshoot, and repair control systems. This is the
core responsibility of a CCST Level I technician.
2. Which type of signal uses discrete values such as ON or OFF?
A. Analog
B. Pneumatic
C. Digital
D. Proportional
Correct answer: Digital. Digital signals represent discrete states like 0/1 or
ON/OFF.
3. A 4–20 mA signal is commonly used because it:
A. Is inexpensive
B. Uses less power
, C. Allows detection of open circuits
D. Works only with PLCs
Correct answer: Allows detection of open circuits. A current below 4 mA
indicates a fault.
4. What does PLC stand for?
A. Process Logic Controller
B. Programmable Logic Controller
C. Power Load Computer
D. Programmable Loop Controller
Correct answer: Programmable Logic Controller. PLCs are industrial digital
computers used for automation.
5. Which instrument measures process temperature?
A. Flow meter
B. Pressure transmitter
C. Level switch
D. Thermocouple
Correct answer: Thermocouple. It converts temperature differences into
electrical voltage.
6. What is the purpose of a control loop?
A. Store process data
B. Maintain a process variable at a desired value
C. Amplify signals
D. Isolate power
Correct answer: Maintain a process variable at a desired value. Control loops
regulate process conditions.
, 7. Which device converts a physical process variable into an electrical signal?
A. Actuator
B. Controller
C. Sensor/Transmitter
D. Final control element
Correct answer: Sensor/Transmitter. These devices sense and transmit process
conditions.
8. In a basic control loop, the final control element is typically a:
A. Sensor
B. PLC
C. Transmitter
D. Control valve
Correct answer: Control valve. It directly changes the process variable.
9. What is the main function of a controller?
A. Measure variables
B. Supply power
C. Compare setpoint to process variable and take action
D. Convert signals
Correct answer: Compare setpoint to process variable and take action.
Controllers compute corrective output.
10.Which unit is used to measure electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Correct answer: Ohm. Resistance is measured in ohms.
TECHNICIAN (CCST) LEVEL I PRACTICE
EXAM QUESTION AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A INSTANT
DOWNLOAD PDF
1. The primary role of a Control Systems Technician is to:
A. Design new control algorithms
B. Program enterprise software
C. Maintain, troubleshoot, and repair control systems
D. Approve engineering drawings
Correct answer: Maintain, troubleshoot, and repair control systems. This is the
core responsibility of a CCST Level I technician.
2. Which type of signal uses discrete values such as ON or OFF?
A. Analog
B. Pneumatic
C. Digital
D. Proportional
Correct answer: Digital. Digital signals represent discrete states like 0/1 or
ON/OFF.
3. A 4–20 mA signal is commonly used because it:
A. Is inexpensive
B. Uses less power
, C. Allows detection of open circuits
D. Works only with PLCs
Correct answer: Allows detection of open circuits. A current below 4 mA
indicates a fault.
4. What does PLC stand for?
A. Process Logic Controller
B. Programmable Logic Controller
C. Power Load Computer
D. Programmable Loop Controller
Correct answer: Programmable Logic Controller. PLCs are industrial digital
computers used for automation.
5. Which instrument measures process temperature?
A. Flow meter
B. Pressure transmitter
C. Level switch
D. Thermocouple
Correct answer: Thermocouple. It converts temperature differences into
electrical voltage.
6. What is the purpose of a control loop?
A. Store process data
B. Maintain a process variable at a desired value
C. Amplify signals
D. Isolate power
Correct answer: Maintain a process variable at a desired value. Control loops
regulate process conditions.
, 7. Which device converts a physical process variable into an electrical signal?
A. Actuator
B. Controller
C. Sensor/Transmitter
D. Final control element
Correct answer: Sensor/Transmitter. These devices sense and transmit process
conditions.
8. In a basic control loop, the final control element is typically a:
A. Sensor
B. PLC
C. Transmitter
D. Control valve
Correct answer: Control valve. It directly changes the process variable.
9. What is the main function of a controller?
A. Measure variables
B. Supply power
C. Compare setpoint to process variable and take action
D. Convert signals
Correct answer: Compare setpoint to process variable and take action.
Controllers compute corrective output.
10.Which unit is used to measure electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Correct answer: Ohm. Resistance is measured in ohms.
