Certification Exam Practice Questions

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

All subjects: Electrical, Mechanical, Safety, Rigging, Hydraulics, Wind

Systems, Troubleshooting

1. The primary function of a nacelle in a wind turbine is to:

• Support the tower
• House critical mechanical and electrical components
• Store backup batteries
• Measure wind direction

Rationale: The nacelle contains gearbox, generator, brakes, and

control systems critical to turbine operation.

2. Ohm’s Law states:

• Voltage ÷ Current = Resistance 1 / 3

• Voltage = Current × Resistance
• Current = Voltage × Resistance
• Power = Voltage × Resistance

Rationale: Ohm’s Law defines voltage as the product of current and

resistance.

3. The primary purpose of a Lockout/Tagout procedure is to:

• Provide machine diagnostics
• Reduce noise levels
• Prevent unexpected energization
• Track maintenance records

Rationale: LOTO ensures hazardous energy is isolated to prevent

accidental startup.

4. A gearbox is commonly used in wind turbines to:

• Increase torque to the rotor
• Decrease generator RPM
• Increase RPM from rotor to generator
• Reduce braking power

Rationale: Gearboxes convert slow rotor rotation into high-speed

generator rotation.

• Which PPE is required when climbing a wind tower?
• Ear protection only
• Hard hat only
• Full fall arrest system 2 / 3

• Safety shoes only

Rationale: Tower climbing requires certified fall protection to prevent

injury.

• What type of current is typically generated by a wind turbine

generator?

• DC
• Pulsating DC
• AC
• High-voltage static

Rationale: Generators produce alternating current before grid

conditioning.

7. The slip rings in a wind turbine enable:

• Rotor speed control
• Transfer of power/signals from rotating hub to stationary

components

• Grounding from tower base
• Cooling of generator

Rationale: Slip rings maintain electrical continuity during rotation.

8. When using a hydraulic torque wrench, the most important factor is:

• Color of hoses
• Correct torque setting and calibration
• Tool weight
• / 3