Wind Speed and Power: The Key to Wind Energy Generation

Question 1

What factor has the greatest influence on the power generated by a wind turbine?

Accepted Answer

Wind speed

Answer

Blade length

Answer

Tower height

Answer

Air temperature

Question 2

What factor has the greatest impact on the power generated by a wind turbine?

Accepted Answer

Wind speed

Answer

Blade design

Answer

Tower height

Question 3

Which primary factor most significantly influences the power output of a wind turbine?

Accepted Answer

Wind speed

Answer

Turbine height

Answer

Air density

Answer

Rotor diameter

Question 4

What is the maximum theoretical efficiency of a wind turbine, often referred to as the Betz limit?

Accepted Answer

59.3%

Answer

100%

Answer

78.5%

Answer

40.7%

Question 5

How does increasing the blade length of a wind turbine generally affect its annual energy production?

Accepted Answer

Increases annual energy production

Answer

Increases noise generation

Answer

Has no effect on annual energy production

Answer

Decreases annual energy production

Question 6

Which of the following is a potential environmental concern associated with wind turbines?

Accepted Answer

Bird collisions

Answer

Greenhouse gas emissions

Answer

Water pollution

Answer

Soil erosion

Question 7

A wind turbine is operating in highly turbulent wind conditions. Which of the following will result in reduced power output?

Accepted Answer

Rapid wind speed fluctuations

Answer

High turbine efficiency

Answer

Low air density

Answer

Steady wind speed

Question 8

Which of the following components of a wind turbine converts mechanical energy into electrical energy?

Accepted Answer

Generator

Answer

Rotor

Answer

Nacelle

Question 9

A wind turbine is designed to operate within a specific wind speed range. What is the term for the minimum wind speed required to begin generating power?

Accepted Answer

Cut-in speed

Answer

Cut-out speed

Answer

Rated speed

Question 10

Which of the following is a potential environmental benefit of wind energy?

Accepted Answer

Reduction of greenhouse gas emissions

Answer

Noise pollution

Answer

Increased water pollution

Question 11

How does wind speed influence the power output of a wind turbine?

Accepted Answer

Power output is proportional to the cube of wind speed.

Answer

Power output is inversely proportional to wind speed.

Answer

Power output is proportional to the square of wind speed.

Question 12

Define the cut-in speed of a wind turbine.

Accepted Answer

The minimum wind speed required for the turbine to start generating power.

Answer

The wind speed at which the turbine generates its maximum power.

Answer

The maximum wind speed at which the turbine can operate safely.

Question 13

What is the Betz limit in wind turbine theory?

Accepted Answer

The theoretical maximum efficiency of a wind turbine.

Answer

The maximum size of a wind turbine blade.

Answer

The minimum wind speed required for turbine operation.

Question 14

Identify the potential environmental impacts associated with wind turbines.

Accepted Answer

Visual impact, noise pollution, and bird and bat collisions.

Answer

Greenhouse gas emissions, water pollution, and land use.

Answer

Air pollution, soil erosion, and deforestation.

Question 15

Which of the following factors plays a dominant role in determining the amount of power generated by a wind turbine?

Accepted Answer

Wind speed

Answer

Blade material

Answer

Number of blades

Answer

Turbine height

Question 16

Wind shear refers to the phenomenon where:

Accepted Answer

Wind speed increases with height above the ground.

Answer

Wind speed remains constant with height.

Answer

Wind direction changes with height.

Question 17

The specific wind speed at which a wind turbine operates most efficiently is known as:

Accepted Answer

Rated wind speed

Answer

Cut-in wind speed

Answer

Turbine start-up speed

Answer

Cut-out wind speed

Question 18

The process by which a wind turbine converts the kinetic energy of the wind into electrical energy is known as:

Accepted Answer

Electromagnetic induction

Answer

Mechanical induction

Answer

Thermal conversion

Answer

Hydroelectric conversion

Question 19

The Betz limit refers to the theoretical maximum efficiency at which a wind turbine can convert wind energy into electrical energy. Approximately, what is this limit?

Accepted Answer

59%

Answer

40%

Answer

65%

Answer

75%