9. What form of energy has high cost of construction, high environmental impact, and the potential to force the displacement of people and wildlife? o nuclear power o hydropower o solar power o wind power
Synchronous Generator
In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.
Salient Pole Rotor
Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.
9. What form of energy has high cost of construction, high environmental impact, and the
potential to force the displacement of people and wildlife?
o nuclear power
o hydropower
o solar power
o wind power
10. ___is the most energy-efficient, cost-effective, and environmentally clean way to heat
or cool a building.
o photovoltaic power
o passive solar
o hydrogen power
o geothermal exchange
11. Which of the following questions should we NOT ask when deciding which energy
alternative to use?
o How vulnerable is the resource to terrorism?
o How much of the energy resource is likely to be available in the near future and the long term?
o What government research and development subsidies will be available?
o How much will it cost the consumer to purchase this energy resource?
12. Which of the following is a disadvantage of using solar energy to generate high temperature heat and electricity?
o low net energy
o high carbon dioxide emissions
o takes 10-20 years to construct
o may disturb desert areas
13. One of the disadvantages of natural gas is
o it has a relatively low net energy yield.
o it is very difficult to transport from one country to another
o it produces more air pollution than other fossil fuels
o supplies are very low.
14. Which of the following is NOT a pollutant released by the burning of coal?
o iron
o mercury
o sulfur dioxide
o arsenic
15. A fuel cell combines____and___to produce electricity,
o hydrogen, oxygen
o carbon dioxide, hydrogen
o a battery, gasoline
o water, ethanol
16. A disadvantage of nuclear power is ___
o severe disruption of land
o high level of water pollution
o low net energy yield
o high risk of accident
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