Exam Practice Questions And Correct

Wind Turbine Technician Certification Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary function of the yaw system in a wind turbine?
• Control blade pitch
• Align the nacelle with the wind
• Generate electricity
• Reduce noise

Answer: B

Rationale: The yaw system rotates the nacelle so that the rotor faces

the wind for optimal energy capture.

• Which component converts mechanical energy from the rotor into

electrical energy? 1 / 4

• Gearbox
• Rotor hub
• Generator
• Blade pitch system

Answer: C

Rationale: The generator is responsible for converting rotational

mechanical energy into electrical energy.

• What is the purpose of the blade pitch system?
• Increase rotor speed
• Regulate rotor power output
• Align the nacelle
• Reduce tower vibration

Answer: B

Rationale: The blade pitch system adjusts blade angles to control

power output and protect the turbine from high wind loads.

• What is the main safety hazard associated with working inside a wind

turbine nacelle?

• Noise
• Falling ice
• Electrical shock and moving machinery
• Lightning

Answer: C 2 / 4

Rationale: Technicians face risks from high voltage systems and

moving mechanical components inside the nacelle.

• Which type of brake is typically used in modern wind turbines for

emergency stopping?

• Friction disc brake
• Hydraulic brake
• Mechanical lever brake
• Electromagnetic brake

Answer: B

Rationale: Hydraulic brakes provide reliable emergency stopping

capability in modern turbines.

• What is the function of the gearbox in a wind turbine?
• Control blade pitch
• Convert electrical energy
• Increase rotor speed for the generator
• Reduce vibration

Answer: C

Rationale: The gearbox steps up the low-speed rotation of the rotor to

a higher speed suitable for the generator.

• Which type of maintenance is performed according to a fixed

schedule, regardless of equipment condition?

• Predictive
• Condition-based 3 / 4

• Preventive
• Corrective

Answer: C

Rationale: Preventive maintenance is scheduled at regular intervals to

prevent failures.

• What is the primary role of the controller in a wind turbine?
• Turn the turbine on/off manually
• Increase blade length
• Monitor and control turbine operation
• Reduce nacelle noise

Answer: C

Rationale: The controller regulates turbine functions, including power

output, safety systems, and fault monitoring.

• What type of electrical current is typically produced by a wind turbine

generator before conversion?

• Direct current (DC)
• Alternating current (AC)
• High-voltage DC
• Low-voltage AC

Answer: B

Rationale: Most wind turbine generators produce AC, which may be

converted or transformed for grid compatibility.

• / 4