1. What are some of the advantages of hydro power? Select all that apply Select

ID: 1711019 • Letter: 1

Question

1. What are some of the advantages of hydro power? Select all that apply

Select one or more:

a. no polluting emissions

b. No waste heat

c. relies only on renewable energy sources

d. No regulatory barriers to using this resource

2. Which of the following are advantages of wind power over solar power? Select all that apply

Select one or more:

a. Winds can blow day and night

b. Winds can blow even when clouds or weather obscure the sun

c. Wind can provide continuous power (24hours per day)

d. Wind has no environmental effects

3. Which factor has the most effect on the amount of power generated by a wind turbine?

Select one:

a. Wind velocity (speed)

b. Length of the turbine blade

c. Height of the wind turbine above ground

d. The materials of construction of the turbine blades (e.g. carbon fiber is lighter than aluminum)

4. What advantage did the older American style of wind turbine (multi blades, seen often around farms) provide?

Select one:

a. Generate higher starting torque so they are better suited for driving water pumps

b. Generating electricity in very high winds

c. effective at night

d. Effective for powering farm equipment

5. Why is the height above ground important to wind turbine energy production?

Select one:

a. Winds blow at higher speeds at higher altitudes- this drives the wind turbine faster

b. Very tall wind turbines are less costly to produce and operate

c. Reduces the chance of birds and bats colliding with the turbine blades

d. Generates less noise pollution

1) All the options given are correct. all these are advantages of wind power.

2) first 3 options are correct. But it depends on environment.

3)wind speed and height above the ground are most important for the energy production.

4) All the options given are correct. these are mostly used in fields.

5) Option a,c and d are correct. but they are difficult to operate.

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