AZ L-96 Wind Turbine Installer Contractor Exam Questions And Correct Answers (Verified Answers) Plus Rationale2026 Q&A| Instant Download Pdf

AZ L-96 Wind Turbine Installer
Contractor Exam Questions And Correct
Answers (Verified Answers) Plus
Rationale2026 Q&A| Instant Download
Pdf


1. What is the primary purpose of a wind turbine?
A. Generate heat
B. Generate electricity
C. Pump water
D. Reduce air pollution
B. Generate electricity
Rationale: The main function of a wind turbine is to convert kinetic
energy from wind into electrical energy.
2. Which component converts the rotational energy of the rotor into
electrical energy?
A. Rotor
B. Nacelle
C. Generator
D. Tower
C. Generator
Rationale: The generator inside the nacelle converts mechanical
rotation into electrical energy.
3. What is the typical range of hub heights for utility-scale wind turbines?
A. 20–40 meters
B. 40–80 meters
C. 80–120 meters
D. 120–160 meters

, C. 80–120 meters
Rationale: Modern utility-scale turbines commonly have hub heights
between 80 and 120 meters to access stronger, more consistent winds.
4. Which wind turbine type is most commonly used for large-scale
electricity production?
A. Horizontal-axis wind turbine (HAWT)
B. Vertical-axis wind turbine (VAWT)
C. Darrieus turbine
D. Savonius turbine
A. Horizontal-axis wind turbine (HAWT)
Rationale: HAWTs are the most widely used type due to higher
efficiency and scalability for utility-scale applications.
5. What safety gear is essential when working at heights during wind
turbine installation?
A. Safety glasses only
B. Gloves only
C. Harness and fall protection
D. Helmet only
C. Harness and fall protection
Rationale: Fall protection systems are mandatory to prevent injuries
during work at height on wind turbine towers.
6. Which factor most affects wind turbine power output?
A. Blade color
B. Wind speed
C. Generator brand
D. Nacelle weight
B. Wind speed
Rationale: Power output is proportional to the cube of wind speed,
making it the critical factor for energy generation.
7. What is the purpose of a yaw system in a wind turbine?
A. Adjust blade pitch
B. Turn the rotor into the wind
C. Control generator output
D. Stabilize the tower
B. Turn the rotor into the wind
Rationale: The yaw system rotates the nacelle to face the wind,
optimizing energy capture.

, 8. How is blade pitch controlled on modern wind turbines?
A. Fixed blades only
B. Manually adjusted
C. Hydraulic or electric actuators
D. Wind-driven gears
C. Hydraulic or electric actuators
Rationale: Modern turbines use hydraulic or electric systems to
adjust blade pitch for load control and efficiency.
9. What is the purpose of a wind turbine’s gearbox?
A. Reduce rotor speed for generator compatibility
B. Increase rotor speed for higher lift
C. Convert AC to DC
D. Stabilize tower vibration
A. Reduce rotor speed for generator compatibility
Rationale: Gearboxes adapt the slow rotor speed to the higher
rotational speed required by the generator.
10. Which type of foundation is most common for onshore wind
turbines?
A. Spread footing
B. Pile foundation
C. Caisson foundation
D. Floating foundation
A. Spread footing
Rationale: Spread footings provide stable support for onshore
turbines and distribute loads effectively on soil.
11. What is the function of a wind turbine’s anemometer?
A. Measure tower stress
B. Measure wind speed
C. Control generator voltage
D. Adjust blade pitch
B. Measure wind speed
Rationale: Anemometers measure wind speed, providing data for
turbine control and energy forecasting.
12. What is the primary cause of wind turbine noise?
A. Tower vibration
B. Blade passing through air
C. Generator cooling