Certification Exam Practice Questions

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

(All subjects included: Safety, Electrical, Mechanical, Hydraulic,

Troubleshooting, Turbine Operations, Control Systems, PPE, LOTO, etc.)

⃣– Safety & LOTO

• What is the primary purpose of Lockout/Tagout (LOTO)?
• To identify tools
• To ensure turbine performance
• To isolate hazardous energy sources before maintenance
• To reduce paperwork

Rationale: LOTO eliminates unexpected energy release during

service. 1 / 3

2. When climbing a turbine tower, you must:

• Carry tools in your hands
• Use approved fall protection and maintain 100% tie-off
• Keep harness loose for comfort
• Only tie-off when windy

Rationale: 100% tie-off prevents fatal falls.

• Which fire extinguisher is suitable for electrical fires?
• Class A
• Class B
• Class C
• Class D

Rationale: Class C extinguishers are designed for energized electrical

equipment.

• What does a confined space hazard mainly involve?
• Too much sunlight
• Limited entry/exit and possible oxygen deficiency
• Only visible hazards
• Only noise concerns

Rationale: Confined spaces may contain atmospheric and

entrapment hazards.

• What is the first step in an emergency evacuation?
• Finish the task
• Grab personal items 2 / 3

• Alert the team and follow emergency procedures
• Shut down the SCADA

Rationale: Communication is critical for coordinated evacuation.

⃣– Electrical Systems

• What does Ohm’s Law represent?
• Frequency to wavelength
• Power to current
• Voltage = Current × Resistance
• Resistance × Capacitance

Rationale: Ohm’s Law defines the relationship V=IR.

7. A GFCI protects against:

• Short circuits only
• Ground faults and leakage currents
• Lightning strikes
• Low power quality

Rationale: GFCIs trip when current leaks to ground.

• What is the typical voltage level in a turbine generator output before

transformation?

• 5 kV
• 20 kV
• 120 V
• / 3