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1. What is the primary function of a wind turbine?
A. Convert mechanical energy into electrical energy
B. Store wind energy in batteries
C. Compress air for industrial use
D. Generate heat energy
Answer: A
Rationale: Wind turbines convert kinetic energy from wind into
mechanical energy, which is then transformed into electrical energy
through a generator.
2. Which component of a wind turbine captures wind energy?
A. Gearbox
B. Blades
C. Generator
D. Transformer
Answer: B
Rationale: The blades are designed to capture wind energy and
convert it into rotational motion.
, 3. What is the purpose of a gearbox in a wind turbine?
A. Increase rotational speed
B. Store energy
C. Cool the generator
D. Measure wind speed
Answer: A
Rationale: The gearbox increases the low-speed rotation of the rotor
into higher-speed rotation suitable for electricity generation.
4. Which tool is commonly used to measure wind speed?
A. Ammeter
B. Anemometer
C. Barometer
D. Hygrometer
Answer: B
Rationale: An anemometer measures wind speed, which is critical for
turbine performance assessment.
5. What is the cut-in wind speed of a typical wind turbine?
A. Speed at which turbine stops
B. Speed at which turbine starts generating power
C. Maximum safe operating speed
D. Speed at which blades are replaced
Answer: B
Rationale: Cut-in speed is the minimum wind speed required for the
turbine to start generating electricity.
, 6. What is the function of a wind turbine generator?
A. Convert mechanical energy into electrical energy
B. Store electricity
C. Increase wind speed
D. Control blade pitch
Answer: A
Rationale: The generator converts mechanical rotation into electrical
power.
7. What is the purpose of a pitch control system?
A. Change blade angle for efficiency
B. Measure wind direction
C. Store energy
D. Cool turbine blades
Answer: A
Rationale: Pitch control adjusts blade angles to optimize efficiency
and protect the turbine in high winds.
8. Which part connects the rotor to the gearbox?
A. Hub
B. Shaft
C. Tower
D. Nacelle cover
Answer: B
Rationale: The shaft transfers rotational energy from the rotor to the
gearbox.
, 9. What is the function of a wind turbine tower?
A. Generate electricity
B. Support the nacelle and blades
C. Store power
D. Control voltage
Answer: B
Rationale: The tower elevates the turbine components to capture
stronger winds and supports the structure.
10. What does a SCADA system do in wind energy operations?
A. Physically repairs turbines
B. Monitors and controls turbine performance
C. Generates wind flow
D. Stores electricity
Answer: B
Rationale: SCADA systems provide remote monitoring and control of
wind turbine operations.
11. What is the primary hazard when working on wind turbines?
A. Radiation
B. Electrical shock and fall risk
C. Chemical burns
D. Noise pollution only
Answer: B
Rationale: Technicians face electrical hazards and significant fall risks
due to height.