In production of ethanol the from corn, yeast is used to A. Purify the ethanol b
ID: 529570 • Letter: I
Question
In production of ethanol the from corn, yeast is used to A. Purify the ethanol by distillation B. Convert Ranches to sugars C. Release starches from the corn sugars to alcohol These of which of the following is the fuel that results in the highest emission of carbon dioxide? A. Natural gas B. Petroleum C. Coal D. Nitrogen oxides E. Which of the following is an advantage of using a heat pump to extract geothermal energy? A. Heat pumps can be used nearly anywhere on the planet. B. Heat pumps use the confidence of geothermal hot and an underground reservoir C. Heat pumps circulate hot underground water through home heating pay items. D. Heat pumps use a high subterranean temperature extract heat. In wind power production major advantage of the horizontal axis turbines? A They have high stresses on the turbine blades. B. They are taller and can reach higher velocity winds from wind blowing from any direction c They can collect end D. They are cheaper to install than vertical axis turbines. The smart grid approach will have many benefits in managing energy use and improving efficiency which of the following will be the major cost savings advantage? A The sensors will allow utilities to know where disruptions, such as downed power line, are located. The sensors will send real-time usage data so utilities can minimize the usage of back-up power plants c The sensors will allow for an increase in the use of intermittent power sources, such as wind or solar D. The sensors will allow the grid to shut off smart appliances and minimize power use in periods of high demand.Explanation / Answer
23) The yeast converts starch to sugars
24) more CO2 is produced by burning of petroleum
25) option B is correct answer. The heat pump uses the hotspot
26) They have higher stresses at blades. So more enrgy can be obtained
27) The sensors uses real time usage data, option-B is correct
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