WIND ENERGY TECHNICIAN
CERTIFICATION EXAM QUESTION AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
INSTANT DOWNLOAD PDF
1. The primary function of a wind turbine rotor is to
A. Increase air pressure
B. Convert wind energy into mechanical energy
C. Store electrical energy
D. Reduce drag
Answer: B
Rationale: The rotor captures kinetic energy from the wind and converts it
into mechanical rotational energy.
2. Which component controls the turbine’s orientation into the wind?
A. Gearbox
B. Nacelle
C. Yaw system
D. Brake system
Answer: C
Rationale: The yaw system turns the nacelle so the rotor faces the wind
for maximum efficiency.
3. The gearbox in a wind turbine primarily
A. Slows rotor speed
B. Increases generator speed
C. Converts AC to DC
, D. Controls blade pitch
Answer: B
Rationale: The gearbox increases low rotor speed to the higher speed
required by the generator.
4. Which wind speed typically causes a turbine to shut down for safety?
A. Cut-in speed
B. Rated speed
C. Cut-out speed
D. Average speed
Answer: C
Rationale: Cut-out speed is the maximum wind speed beyond which
turbines shut down to prevent damage.
5. The main purpose of blade pitch control is to
A. Reduce noise only
B. Increase tower height
C. Control power output and loads
D. Lubricate bearings
Answer: C
Rationale: Pitch control adjusts blade angle to regulate power and reduce
mechanical stress.
6. Which type of brake is commonly used for emergency stopping?
A. Aerodynamic brake
B. Hydraulic disc brake
C. Magnetic brake
D. Eddy current brake
Answer: B
Rationale: Hydraulic disc brakes provide reliable mechanical stopping in
emergencies.
7. The nacelle houses
A. Blades only
B. Tower base equipment
, C. Gearbox, generator, and controls
D. Transformers exclusively
Answer: C
Rationale: The nacelle contains key mechanical and electrical components.
8. What is the typical material used for modern wind turbine blades?
A. Steel
B. Aluminum
C. Fiberglass-reinforced composites
D. Copper
Answer: C
Rationale: Composite materials provide strength, flexibility, and low
weight.
9. The cut-in wind speed refers to
A. Maximum operating speed
B. Speed where turbine produces rated power
C. Minimum speed to start generating power
D. Average site wind speed
Answer: C
Rationale: Cut-in speed is when the turbine begins producing usable
electricity.
10.Which electrical component converts mechanical energy to electrical
energy?
A. Transformer
B. Inverter
C. Generator
D. Rectifier
Answer: C
Rationale: The generator converts rotational mechanical energy into
electrical energy.
11.What is the primary purpose of a transformer in a wind turbine system?
A. Increase rotor speed
CERTIFICATION EXAM QUESTION AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
INSTANT DOWNLOAD PDF
1. The primary function of a wind turbine rotor is to
A. Increase air pressure
B. Convert wind energy into mechanical energy
C. Store electrical energy
D. Reduce drag
Answer: B
Rationale: The rotor captures kinetic energy from the wind and converts it
into mechanical rotational energy.
2. Which component controls the turbine’s orientation into the wind?
A. Gearbox
B. Nacelle
C. Yaw system
D. Brake system
Answer: C
Rationale: The yaw system turns the nacelle so the rotor faces the wind
for maximum efficiency.
3. The gearbox in a wind turbine primarily
A. Slows rotor speed
B. Increases generator speed
C. Converts AC to DC
, D. Controls blade pitch
Answer: B
Rationale: The gearbox increases low rotor speed to the higher speed
required by the generator.
4. Which wind speed typically causes a turbine to shut down for safety?
A. Cut-in speed
B. Rated speed
C. Cut-out speed
D. Average speed
Answer: C
Rationale: Cut-out speed is the maximum wind speed beyond which
turbines shut down to prevent damage.
5. The main purpose of blade pitch control is to
A. Reduce noise only
B. Increase tower height
C. Control power output and loads
D. Lubricate bearings
Answer: C
Rationale: Pitch control adjusts blade angle to regulate power and reduce
mechanical stress.
6. Which type of brake is commonly used for emergency stopping?
A. Aerodynamic brake
B. Hydraulic disc brake
C. Magnetic brake
D. Eddy current brake
Answer: B
Rationale: Hydraulic disc brakes provide reliable mechanical stopping in
emergencies.
7. The nacelle houses
A. Blades only
B. Tower base equipment
, C. Gearbox, generator, and controls
D. Transformers exclusively
Answer: C
Rationale: The nacelle contains key mechanical and electrical components.
8. What is the typical material used for modern wind turbine blades?
A. Steel
B. Aluminum
C. Fiberglass-reinforced composites
D. Copper
Answer: C
Rationale: Composite materials provide strength, flexibility, and low
weight.
9. The cut-in wind speed refers to
A. Maximum operating speed
B. Speed where turbine produces rated power
C. Minimum speed to start generating power
D. Average site wind speed
Answer: C
Rationale: Cut-in speed is when the turbine begins producing usable
electricity.
10.Which electrical component converts mechanical energy to electrical
energy?
A. Transformer
B. Inverter
C. Generator
D. Rectifier
Answer: C
Rationale: The generator converts rotational mechanical energy into
electrical energy.
11.What is the primary purpose of a transformer in a wind turbine system?
A. Increase rotor speed
