Siemens Gamesa Wind Turbine Technician
Certification Exam Practice Questions And Correct
Answers (Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of the yaw system in a wind turbine?
A. Adjust blade pitch
B. Convert AC to DC
C. Align the rotor with the wind direction
D. Increase rotor frequency
The yaw system keeps the nacelle facing the wind to maximize power
production.
2. Which component converts mechanical rotational energy into electrical
energy?
A. Pitch system
B. Generator
,C. Gearbox
D. Transformer
The generator converts shaft rotation into electrical output.
3. What type of gearbox is most commonly used in large wind turbines?
A. Harmonic drive
B. Hypoid drive
C. Planetary (epicyclic) gearbox
D. Worm drive
Planetary gearboxes handle high torque loads efficiently.
4. The pitch system in a turbine is used mainly to:
A. Stop rotor oscillations
B. Change nacelle direction
C. Regulate rotor speed and power output
D. Store electricity
Pitch control adjusts blade angles to control speed and power.
5. Which voltage level is most common within wind turbine internal
networks?
A. 480V DC
B. 690V AC
C. 220V AC
D. 5kV AC
690V AC is a standard medium-voltage level for wind turbines.
, 6. What is the main function of SCADA in wind turbines?
A. Increase wind speed
B. Remote monitoring and control
C. Convert voltage
D. Lubricate components
SCADA provides real-time operational oversight and control.
7. Which fire suppression system is typically installed in wind turbines?
A. Halon flooding
B. CO₂ sprinklers
C. Clean agent gas (e.g., FM-200)
D. Water deluge
Clean agents are safe for electronics and effective in enclosed spaces.
8. Arc-flash PPE Category 2 requires a minimum arc rating of:
A. 3 cal/cm²
B. 8 cal/cm²
C. 25 cal/cm²
D. 40 cal/cm²
Category 2 specifies PPE ≥ 8 cal/cm².
9. Which sensor monitors main shaft speed?
A. Temperature sensor
B. Encoder / tachometer
C. Strain gauge
Certification Exam Practice Questions And Correct
Answers (Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of the yaw system in a wind turbine?
A. Adjust blade pitch
B. Convert AC to DC
C. Align the rotor with the wind direction
D. Increase rotor frequency
The yaw system keeps the nacelle facing the wind to maximize power
production.
2. Which component converts mechanical rotational energy into electrical
energy?
A. Pitch system
B. Generator
,C. Gearbox
D. Transformer
The generator converts shaft rotation into electrical output.
3. What type of gearbox is most commonly used in large wind turbines?
A. Harmonic drive
B. Hypoid drive
C. Planetary (epicyclic) gearbox
D. Worm drive
Planetary gearboxes handle high torque loads efficiently.
4. The pitch system in a turbine is used mainly to:
A. Stop rotor oscillations
B. Change nacelle direction
C. Regulate rotor speed and power output
D. Store electricity
Pitch control adjusts blade angles to control speed and power.
5. Which voltage level is most common within wind turbine internal
networks?
A. 480V DC
B. 690V AC
C. 220V AC
D. 5kV AC
690V AC is a standard medium-voltage level for wind turbines.
, 6. What is the main function of SCADA in wind turbines?
A. Increase wind speed
B. Remote monitoring and control
C. Convert voltage
D. Lubricate components
SCADA provides real-time operational oversight and control.
7. Which fire suppression system is typically installed in wind turbines?
A. Halon flooding
B. CO₂ sprinklers
C. Clean agent gas (e.g., FM-200)
D. Water deluge
Clean agents are safe for electronics and effective in enclosed spaces.
8. Arc-flash PPE Category 2 requires a minimum arc rating of:
A. 3 cal/cm²
B. 8 cal/cm²
C. 25 cal/cm²
D. 40 cal/cm²
Category 2 specifies PPE ≥ 8 cal/cm².
9. Which sensor monitors main shaft speed?
A. Temperature sensor
B. Encoder / tachometer
C. Strain gauge
