Wind Turbine Technician Certification Exam
(Manufacturer / Union Specialist Level) Questions and
Correct Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary function of a wind turbine gearbox?
A. Increase rotor speed to generator speed
B. Reduce electrical voltage
C. Store kinetic energy
D. Control blade pitch
Answer: A
The gearbox increases low-speed rotor rotation into high-speed rotation
required by the generator.
2. Which component converts mechanical energy into electrical
energy?
A. Transformer
B. Generator
,C. Inverter
D. Brake system
Answer: B
The generator converts rotational mechanical energy into electrical
power.
3. What is the purpose of a pitch control system?
A. Adjust tower height
B. Change blade angle for power regulation
C. Lubricate bearings
D. Increase gearbox speed
Answer: B
Pitch control adjusts blade angle to optimize efficiency and protect
against overspeed.
4. What type of current is typically produced by a wind turbine
generator before conversion?
A. DC
B. Pulsed DC
,C. AC
D. Static electricity
Answer: C
Most wind turbine generators produce AC power.
5. What is the main function of a yaw system?
A. Control blade pitch
B. Align nacelle with wind direction
C. Brake the rotor
D. Cool the generator
Answer: B
The yaw system rotates the nacelle to face the wind direction.
6. Which safety system prevents turbine overspeed during high
winds?
A. Hydraulic accumulator
B. Pitch control system
C. Cooling fan
D. Tower dampener
, Answer: B
Pitch control feathers blades to reduce rotational speed in high winds.
7. What is the purpose of a transformer in a wind turbine system?
A. Increase rotor torque
B. Step up voltage for transmission
C. Reduce vibration
D. Control yaw angle
Answer: B
Transformers increase voltage for efficient grid transmission.
8. Which component supports the rotor hub and blades?
A. Nacelle frame
B. Main shaft bearing
C. Tower base
D. Brake disc
Answer: B
Main shaft bearings support the rotating assembly.
(Manufacturer / Union Specialist Level) Questions and
Correct Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary function of a wind turbine gearbox?
A. Increase rotor speed to generator speed
B. Reduce electrical voltage
C. Store kinetic energy
D. Control blade pitch
Answer: A
The gearbox increases low-speed rotor rotation into high-speed rotation
required by the generator.
2. Which component converts mechanical energy into electrical
energy?
A. Transformer
B. Generator
,C. Inverter
D. Brake system
Answer: B
The generator converts rotational mechanical energy into electrical
power.
3. What is the purpose of a pitch control system?
A. Adjust tower height
B. Change blade angle for power regulation
C. Lubricate bearings
D. Increase gearbox speed
Answer: B
Pitch control adjusts blade angle to optimize efficiency and protect
against overspeed.
4. What type of current is typically produced by a wind turbine
generator before conversion?
A. DC
B. Pulsed DC
,C. AC
D. Static electricity
Answer: C
Most wind turbine generators produce AC power.
5. What is the main function of a yaw system?
A. Control blade pitch
B. Align nacelle with wind direction
C. Brake the rotor
D. Cool the generator
Answer: B
The yaw system rotates the nacelle to face the wind direction.
6. Which safety system prevents turbine overspeed during high
winds?
A. Hydraulic accumulator
B. Pitch control system
C. Cooling fan
D. Tower dampener
, Answer: B
Pitch control feathers blades to reduce rotational speed in high winds.
7. What is the purpose of a transformer in a wind turbine system?
A. Increase rotor torque
B. Step up voltage for transmission
C. Reduce vibration
D. Control yaw angle
Answer: B
Transformers increase voltage for efficient grid transmission.
8. Which component supports the rotor hub and blades?
A. Nacelle frame
B. Main shaft bearing
C. Tower base
D. Brake disc
Answer: B
Main shaft bearings support the rotating assembly.
