Wind Energy

What causes wind

• Sun heating the atmosphere

• Rotation of earth's

• Variations in the earth's surface

• All of the above

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What drives the Global Wind?

• Inequal Heating of Poles and Equator of Earth by Solar Energy

• Inequal Heating of Land and Water Bodies (like Sea) by Sun

• Mountains and Valleys

• Wind Turbines

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Direction of wind are opposite in Northern and Southern Hemisphere of earth owing to

• Inequal Heating of Poles and Equator of Earth by Solar Energy

• Bending Force exerted on wind by Coriolis effect owing to earth’s rotation.

• Larger unfrozen sea water in Southern Hemisphere

• None of the Above

Differential heating of Land and Seas (owing to different thermal time constant) during Day and Night Hours lead to

• Global Wind

• Local Wind

• Wind Gust

• Cyclones

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The wind speed at which Wind Turbine starts generating power is called

• Cut-In Wind Speed

• Rated Wind Speed

• Cut-Out Wind Speed

• None of the Above

Tags

NGSS.HS-PS3-3

Darrieus Type of wind Turbines are of

• Horizontal Axis Type

• Vertical Axis type

• Floating Axis Type

Tags

NGSS.MS-ETS1-2

In Horizontal Axis Type of Wind Turbines, which force contributes more in creating rotation of turbine blades.

• Drag Force

• Pull Force

• Push Force

• Lift Force

Airfoil Design of Wind Turbines is based on

• Ohms Law

• Newtons Law of Motion

• Bernoulli’s Principle

• Archimedes Principle

Power available to a Horizontal Axis Wind turbine is proportional to

• Cube of Wind Speed

• Circular Area swept by Turbine blades

• Air Density

• All of the above

Tags

NGSS.HS-PS3-3

In Horizontal Axis Wind Turbine, which Control System orients the turbine rotor as per direction of wind

• Slip Control

• Yaw Control

• Pitch Control

• Stall Control