Solar power plants concentrate solar energy into high temperature fluid to. A. R

Question

Solar power plants concentrate solar energy into high temperature fluid to. A. Reduce the land required for electricity production B. increase the energy density of the incoming sunlight to achieve high efficiency C. Generate high temperature steam to increase the efficiency of electricity production D. Reduce the cost of the solar collectors Water is being cooled to decrease its temperature by 50 degree F. Which situation requires the most cooling? A. Cooling from 0 degree F to 50 degree F. B. Cooling from 50 degree F to 0 degree F C. Cooling from 150 degree F to 100 degree F. D. Cooling from 200 degree C to 150 degree F E. There is no difference as it is a 50 degree in each case Electricity production from hydroelectric dams is often considered environmentally friendly. This is not exactly true because. A. the manufacture of turbine components is a pollution heavy process B. during reservoir formation, natural waterways are diverted C. during operation combustion of fuels releases carbon dioxide and sulfur components D. aerosols are formed and dispersed when falls from great heights Which of the following statements are not true of nuclear energy? Check all that apply. A. no greenhouse gases ere emitted during nuclear plant operation B. the volume of waste is very small compared to fossil fuel energy sources C. nuclear plants are inexpensive to construct D. the fuel required to operate the plant is relatively inexpensive compared to building the plant. E. spent fuel is easy handled and stored

Explanation / Answer

Question 28

Which of the following best described resistance in the context of electricity

The movement of electrons

The property described by the unit ampere

The driving force of electrical flow

The property that inhibits charges flow through a material--------------answer

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Question 29

Soalr power plants concentrate soalr energy into high temperature fluid to

Generate high temperature steam to increase the efficiency of electrical production --------------answer

Question30

Water is being cooled to decrease its temperature by 50F which situation requires the most cooling

Cooling from 0 F to -50 F

Cooling from 50 F to 0 F

Cooling from 150 F to 100 F

Cooling from 200 F to 150 F

There is no difference as it is a 50 F drop in each case----answer

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Question 31

Electricity production from hydroelectric dams is often considered environmentally friendly

This is not exactly true because

During reservoir formation , natural waterways are diverted-------answer

The electrical resistance of an electrical transmitter is a measure of the trouble to pass an electric current through that conveyor. The backwards amount is electrical conductance, and is the straightforwardness with which an electric current passes. Electrical resistance imparts some theoretical parallels to the thought of mechanical rubbing. The SI unit of electrical resistance is the ohm ().An protest of uniform cross segment has a resistance corresponding to its resistivity and length and contrarily relative to its cross-sectional zone. All materials demonstrate some resistance, aside from superconductors, which have a resistance of zero.

The resistance (R) of a protest is characterized as the proportion of voltage crosswise over it (V) to current through it (I), while the conductance (G) is the backwards:

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The ecological effect of repositories goes under constantly expanding investigation as the worldwide interest for water and vitality increments and the number and size of stores increments.

Dams and repositories can be utilized to supply drinking water, produce hydroelectric power, increment the water supply for water system, give recreational open doors, and surge control. Nonetheless, unfriendly natural and sociological effects have been recognized amid and after numerous supply constructions.[citation needed] Whether store tasks are eventually useful or inconvenient to either the earth or encompassing human populaces has been discussed since the 1960s and likely before then, as well.[citation needed] In 1960 the development of Llyn Celyn and the flooding of Capel Celyn incited political turmoil which proceeds right up 'til today. All the more as of late, the development of Three Gorges Dam and other comparative tasks all through Asia, Africa and Latin America have produced extensive natural and political civil argument.

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