Enercon Wind Turbine Service Technician Certification Practice
Exam Questions And Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. What is the primary function of a wind turbine yaw system?
A. Increase generator temperature
B. Control blade pitch angle
C. Align the rotor with the wind direction
D. Regulate grid frequency
Rationale: Yaw systems rotate the nacelle to ensure the rotor faces
the wind for optimal energy capture.
2. Which type of gearbox is most commonly used in wind turbines?
A. Worm gear
B. Planetary gearbox
C. Helical gearbox
, D. Ratchet gearbox
Rationale: Planetary gearboxes provide high torque-density, ideal for
wind turbine loads.
3. What does SCADA stand for?
A. System Control and Dashboard Access
B. Supervisory Control and Data Acquisition
C. Secure Communication for Data Administration
D. System Calibration and Data Analysis
Rationale: SCADA systems monitor and control turbine performance
remotely.
4. Which safety device prevents turbine overspeed?
A. Anemometer
B. Transformer
C. Pitch control system
D. Slip ring
Rationale: Blade pitch adjusts aerodynamic load to slow rotor speed
in high wind.
5. In electrical terms, current is measured in:
A. Watts
B. Ohms
C. Amperes
D. Volts
, Rationale: Current flow in a circuit is quantified using amperes
(amps).
6. Proper fall protection must be used at heights above:
A. 2 ft (0.6m)
B. 4 ft (1.2m)
C. 6 ft (1.8m)
D. 12 ft (3.6m)
Rationale: OSHA requires fall protection over 6 ft in general industry.
7. Enercon turbines commonly use what type of generator?
A. Squirrel-cage induction
B. Direct-drive synchronous generator
C. DC brushed generator
D. Gear-driven asynchronous alternator
Rationale: Enercon utilizes gearless direct-drive synchronous
generators to reduce maintenance.
8. A lockout/tagout procedure is used to:
A. Document shift handover
B. Install new hardware
C. Prevent accidental equipment energization
D. Reduce energy output
Rationale: LOTO ensures equipment is de-energized, protecting
workers from hazards.
Exam Questions And Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. What is the primary function of a wind turbine yaw system?
A. Increase generator temperature
B. Control blade pitch angle
C. Align the rotor with the wind direction
D. Regulate grid frequency
Rationale: Yaw systems rotate the nacelle to ensure the rotor faces
the wind for optimal energy capture.
2. Which type of gearbox is most commonly used in wind turbines?
A. Worm gear
B. Planetary gearbox
C. Helical gearbox
, D. Ratchet gearbox
Rationale: Planetary gearboxes provide high torque-density, ideal for
wind turbine loads.
3. What does SCADA stand for?
A. System Control and Dashboard Access
B. Supervisory Control and Data Acquisition
C. Secure Communication for Data Administration
D. System Calibration and Data Analysis
Rationale: SCADA systems monitor and control turbine performance
remotely.
4. Which safety device prevents turbine overspeed?
A. Anemometer
B. Transformer
C. Pitch control system
D. Slip ring
Rationale: Blade pitch adjusts aerodynamic load to slow rotor speed
in high wind.
5. In electrical terms, current is measured in:
A. Watts
B. Ohms
C. Amperes
D. Volts
, Rationale: Current flow in a circuit is quantified using amperes
(amps).
6. Proper fall protection must be used at heights above:
A. 2 ft (0.6m)
B. 4 ft (1.2m)
C. 6 ft (1.8m)
D. 12 ft (3.6m)
Rationale: OSHA requires fall protection over 6 ft in general industry.
7. Enercon turbines commonly use what type of generator?
A. Squirrel-cage induction
B. Direct-drive synchronous generator
C. DC brushed generator
D. Gear-driven asynchronous alternator
Rationale: Enercon utilizes gearless direct-drive synchronous
generators to reduce maintenance.
8. A lockout/tagout procedure is used to:
A. Document shift handover
B. Install new hardware
C. Prevent accidental equipment energization
D. Reduce energy output
Rationale: LOTO ensures equipment is de-energized, protecting
workers from hazards.
