Wind Turbine Engineering Quiz Post Test

What does a wind turbine convert the kinetic energy of the wind into?

• Chemical energy

• Heat energy

• Electrical energy

• Mechanical energy

What is the purpose of a wind turbine's blades?

• To create noise

• To slow down the wind

• To generate heat

• To capture wind energy

What is the function of the wind vein on a wind turbine?

• To generate electricity

• To measure wind speed

• To control the direction of the blades

• To reduce turbulence

Why do large wind turbines not use a tail fin like smaller turbines?

• Tail fins create too much noise

• Large turbines do not need to align with the wind

• Tail fins add too much weight to the structure

• Tail fins are not effective for large turbines

What is the purpose of the gearbox in a wind turbine?

• To control the direction of the turbine

• To slow down the rotation of the blades

• To generate wind energy

• To increase the speed of the rotor

What type of generator is most common for large wind turbines?

• Doubly fed induction generator

• Permanent magnet generator

• Brushless motor

• Brush DC generator

What is the purpose of the hydraulic disc brake in a wind turbine?

• To stop the rotation of the blades

• To generate electricity

• To control the output frequency

• To increase the torque of the rotor

Why do small domestic wind turbines use a three-phase brushless motor?

• To increase the stability of the turbine

• To reduce the cost of the turbine

• To control the direction of the blades

• To generate a higher voltage

What is the frequency of the electrical outlets in our homes?

• 50 hertz

• 40 hertz

• 80 hertz

• 20 hertz

What is the purpose of the magnet in a generator?

• To interact with the coil of wire

• To control the output frequency

• To increase the torque of the rotor

• To rotate the blades