4A Unit 5 Questions and Answers Rated A+

4A Unit 5 Questions and Answers Rated A+ Where does the oxygen in the air come from? Select one: a. plants b. minerals c. the oceans d. animals a. plants If noise can't be reduced to safe levels by getting a quieter machine or by using sound absorbing materials around it, what can be done? Select one: a. Move the equipment so that the noise isn't a concern b. Use hearing protection c. Re-engineer the equipment d. Restrict access to the machine b. Use hearing protection If a hazardous liquid were to escape containment (it has spilled) who must report the spill? Select one: a. the plant chief b. the person in charge of the material c. the person who discovers the spill d. the plant manager b. the person in charge of the material What do animals use to change what they eat (biomass) into energy? Select one: a. water b. photosynthesis c. oxygen d. heat from the sun c. oxygen Carbon can find its way into rock via: Select one: a. groundwater b. the formation of sedimentary rocks c. decaying plant matter d. carbon dioxide carrying precipitation b. the formation of sedimentary rocks If it is feasible to eliminate the root cause of a problem, what type of action is taken? Select one: a. permanent action b. final action c. restorative action d. fixative action a. permanent action (4-042-2.2) In an electrostatic precipitator the: Select one: a. Particles receive a positive charge b. Collector plates and electrodes are both positively charged c. Discharge electrode is negatively charged d. Ash falls unaided into the bottom hopper c. Discharge electrode is negatively charged With regards to solid pollutants, what is a surface impoundment? Select one: a. It is part of the conveying system meant to handle solid pollutants b. It is an area to store dry solid pollutants c. It is a pond or lagoon where solid pollutants are stored d. It is a warehouse where solid pollutants are stored c. It is a pond or lagoon where solid pollutants are stored How can a Power Engineer affect the environmental impact his/her facility has? Select one: a. by having a good attitude towards environmental impacts b. by ensuring all equipment is running as it should c. by following procedures to the letter d. by reporting all spills immediately a. by having a good attitude towards environmental impacts (4-041-2.1) One proven method of reducing