EGEE 101 Final exam Questions With Complete Solutions

At current US reserves, how long will natural gas last? a- 86 yrs b- 8 yrs c- 50 yrs d- 200 yrs e- 300 yrs - ANS a Which size of particulates are the most harmful to human health? A: 0 microns B: 0 microns to 0.1 microns C: 0.1 micron to 2.0 microns D: 2.0 microns to 4.0 microns E: greater than 4.0 microns - ANS c The three main problems with fossil fuels are that they are non-renewable (fixed amount), pollution, and climate change. a- true b- false - ANS a As population increases, energy consumption increases a- true b- false - ANS a Human development (health, nutrition, education, housing) and a high level of energy use are correlated - we rarely see one without the other. a- true b- false - ANS a what is energy? A: The ability to create power B: The capacity to do work C: The propensity to commit crime D: The density of milk E: Force*displacement - ANS b What is the form of energy contained in a dam called? A: Kinetic B: Chemical C: Nuclear D: Potential E: Electrical - ANS d A btu is defined as the amount of energy required to raise the temperature of one lb of water by one degree Celsius a- true b- false - ANS b The process of two smaller nuclei combining into one larger nucleus A: Combinatorics B: Nuclear reactor C: Nuclear fission D: Nuclear fusion E: Nucleation - ANS d The process of one larger nucleus dividing into smaller nuclei A: Combinatorics B: Nuclear reactor C: Nuclear fission D: Nuclear fusion E: Nucleation - ANS c oil and natural gas typically form in what environment A: marine life preserved at the bottom of deep lakes B: plants in a humic, swamp environment C: at a gas station D: in whales E: in cows - ANS a which fossil fuel contains ash? a- oil b- natural gas c- coal - ANS c how many ranks of coal are there? a- one b- two c- three d- four e- five - ANS d which coal has the highest heating value? A: anthracite B: lignite C: sub-bituminous D: bituminous E: anthrogenous - ANS A Which is more expensive, $100/ton of coal or $3/MCF of natural gas? a- natural gas b- coal - ANS b what is work? A: the capacity to create energy B: A real bummer C: the capacity to create power D: A job E: Force*displacement - ANS e A power plant produces 50 MJ of useful energy and 200 MJ of wasted heat. What is the Efficiency? A: 50% B: 100% C: 33% D: 20% E: 67% - ANS d what is the main use for petroleum? A: transportation B: electricity production C: home heating D: kerosene lamps E: creation of plastics - ANS a what is the main component of natural gas? A: oxygen B: ethane C: propane D: decane E: methane - ANS e which fossil fuel is the cleanest burning? a- coal b- oil (petroleum) c- natural gas - ANS c is the US a net importer or exporter of natural? a- net exporter b- net importer c- touchdown - ANS a how much did the temperature warm from 1850 to 2007? A: 0.85 C B: 0.85 F C: 2.0 C D: 3.0 F E: 3.85 C - ANS a How much carbon dioxide have we emitted into the atmosphere by burning fossil fuels since the industrial revolution? A: a million tons B: a billion tons C: half a billion tons D: half a trillion tons E: a trillion tons - ANS d if a solar farm generates 10 MW in Arizona (320 sunny days per year) is moved to Pennsylvania (160 sunny days per year), what is the new power output? A: 5 MW B: 10 MW C: 20 MW D: 2.5 MW E: 8 MW - ANS a layers of silicon that directly convert sunlight into an electric current A: photovoltaic cells B: passive solar C: active solar D: concentrated solar E: conductors - ANS a the problem of needing to install large transmission capacity to move electrons from the power generation source to a market A: storage problem B: dilute energy problem C: intermittency problem D: unpredictability problem E: location problem - ANS e nuclear fuel rods are _____ uranium by concentration A: 90-100% B: 60-63% C: 10-15% D: 3-4% E: 1-2% - ANS d