Technician Certification Practice Exam

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

• What is the primary purpose of the nacelle on a wind turbine?
• Foundation support
• Houses drivetrain and electrical components
• Increase tower height
• Store hydraulic fluid

Rationale: The nacelle contains key components like gearbox,

generator, and yaw system.

• Which part converts rotational mechanical energy into electrical

energy?

• Gearbox 1 / 3

• Rotor hub
• Generator
• Pitch system

Rationale: The generator converts mechanical rotation into

electricity.

3. The pitch system primarily controls:

• Yaw motion
• Blade angle
• Tower sway
• Generator speed

Rationale: Pitch systems adjust blade angle for power optimization

and protection.

• What does SCADA stand for?
• System Control And Dynamics Automation
• Supervisory Control And Data Acquisition
• Supply Chain And Data Access
• Supervisory Calibration And Diagnostic Access

Rationale: SCADA manages remote monitoring and control of

turbines.

5. The primary function of a yaw system is to:

• Align turbine with the wind direction
• Brake the turbine
• Adjust blade pitch 2 / 3

• Control generator frequency

Rationale: Yaw motors and gears rotate nacelle to face wind.

• What electrical voltage level is most commonly generated inside

utility-scale turbines?

A. 480–600V

B. 690V

C. 120V

• 15kV

Rationale: Most large turbines generate at ~690V before step-up

transformation.

7. Lock-out/Tag-out (LOTO) is used to:

• Start machinery
• Test electrical load
• Prevent accidental energy release
• Monitor performance

Rationale: LOTO ensures equipment cannot be energized during

maintenance.

8. The anemometer measures:

• Temperature
• Blade pitch angle
• Wind speed
• Electrical current
• / 3