Wind Energy Review

________ turn wind power into electricity

• fossil fuels

• wind turbines

• generators

• rotors

Tags

NGSS.MS-PS3-5

Wind turbines have two major size categories: utility scale and _______ scale

• commercial

• residential

• large

• small

Utility scale wind turbines supply power to:

• only one residence

• power grid

• one commercial building

• a water pump to pump water from a well

Tags

NGSS.MS-PS3-5

This type of wind turbine typically transmits power only to the end user:

• small scale

• utility scale

• commercial scale

• large scale

What is the power rating range for an offshore utility scale wind turbine?

• 750kW - 2MW

• 40 - 120kW

• 52 - 96kW

• 3 - 6MW

When multiple utility scale wind turbines are placed together they are referred to as:

• wind group

• wind farm

• wind turbines

• wind gathering

There are _______types of wind turbines based on rotor orientation

• three

• four

• two

• five

For a vertical axis wind turbine, where is the generator located?

• below the shaft near the base

• inside the nacelle

• approximately 20ft from the base of the tower

• adjacent to the rotor

There are two disadvantages to the vertical axis wind turbine (VAWT): they are less efficient because they are lower to the ground, and:

• the generator is located far from the shaft

• VAWT's have to be mounted with special equipment with is costly

• the design of VAWT's exposes their blades to higher stresses which result in shorter life spans

• they operate in lower wind speeds

The rotor and generator of a horizontal axis wind turbine sit on top of a:

• nacelle

• tower

• rotor

• PCU