CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026 |INSTANT
DOWNLOAD PDF
1. What is automation in industrial systems?
A) Manual operation of machines
B) Use of control systems to operate equipment automatically
C) Repair of mechanical tools
D) Human-only production process
Rationale: Automation replaces or reduces human intervention
using control systems.
Correct answer: B
2. Which device is commonly used as the “brain” of
automation systems?
A) Motor
B) Sensor
C) PLC
D) Valve
Rationale: PLC (Programmable Logic Controller) controls
automated processes.
Correct answer: C
,3. What is the main function of a sensor?
A) Store data
B) Convert physical quantity into electrical signal
C) Power machines
D) Control valves directly
Rationale: Sensors detect physical changes and convert them
into signals.
Correct answer: B
4. Which of the following is an actuator?
A) Thermocouple
B) PLC
C) Electric motor
D) Pressure gauge
Rationale: Actuators convert electrical signals into physical
motion.
Correct answer: C
5. What does PLC stand for?
A) Process Logic Circuit
B) Programmable Logic Controller
C) Power Load Controller
D) Programmed Linear Computer
,Rationale: PLC is a programmable industrial control device.
Correct answer: B
6. Which is an example of a feedback system?
A) Open-loop control
B) Closed-loop control
C) Manual control
D) Mechanical switch
Rationale: Closed-loop systems use feedback for correction.
Correct answer: B
7. What is the function of a control system?
A) Store energy
B) Regulate machine operation
C) Increase noise
D) Reduce wiring
Rationale: Control systems manage and regulate processes.
Correct answer: B
8. Which is NOT a type of sensor?
A) Temperature sensor
B) Proximity sensor
, C) Pressure sensor
D) Gear motor
Rationale: Gear motor is an actuator, not a sensor.
Correct answer: D
9. What does HMI stand for?
A) Human Machine Interface
B) Hydraulic Motor Interface
C) High Machine Input
D) Heat Monitoring Instrument
Rationale: HMI allows humans to interact with machines.
Correct answer: A
10. Which system operates without feedback?
A) Closed loop
B) Open loop
C) Automatic loop
D) Smart loop
Rationale: Open-loop systems do not use feedback.
Correct answer: B
11. What is the main role of an actuator?