Exam (elaborations)
EGEE 102 Exam 2 Questions and Answers 2024
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Exam of 8 pages for the course EGEE at EGEE (EGEE 102 Exam 2)
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EGEE 102 Exam 2The energy that causes out atmosphere to heat up comes from ___ - answerthe sun
Global climate change critics argue that due to increased concentration of CO2 we are
seeing more forestation and that climate change is not a serious problem - answerTrue
- the projected 2 degrees C(3.6 F) warming should shift the ideal range for many North
American forest species by about 200km to the north
Which area of the United States has the most acidic rain? - answerNortheast
The stratosphere begins at what altitude? - answer10 miles
Atmospheric concentrations of methane in the last 150 years have ___ -
answerincreased
You are at the most risk of lung damage due to smog if you are ___ - answera young
child
Atmospheric concentrations of methane in the last 150 years have ___ -
answerincreased
Carbon dioxide is the only product when burning coal - answerFalse
Nitrogen in the fuel when burned can form__ - answerNOx
Smog is a primary pollutant cursed by burning of fossil fuels - answerfalse
Slowdown or stoppage of the great ocean conveyer belt could lead to a potential
catastrophe - answerTrue
Without the greenhouse effect Earth would be a better place to live for humans -
answerFalse
The atmospheric temperature and CO2 concentration changed prior to the pre-industrial
periods - answerTrue
Leaking faucets can increase your energy costs - answertrue
Horizontal axis (front loading) washing machines are more efficient compared to top
loading models - answertrue
, Which of the following actions is not likely to improve the efficiency of a refrigerator? -
answerSwitching the motor from a DC to a more efficient AC motor
Bottom mounted refrigerators are ___ efficient compared to top mounted refrigerators -
answermore
What is the term used to define the energy efficiency of a dishwasher? - answerEF
Water heater consumes energy___ - answerwhether we use hot water or not
What kind of label do all electrical appliances have? - answerEnergy Guide
Heat pumps provide no extra savings compared to conventional water heaters -
answerFalse - heat pumps provide higher savings compared to conventional water
heaters
Refrigerators are heat ___ - answermovers
Insulating the cold water pipes will save a lot of energy - answerFalse
What does the acronym DOE stand for? - answerDepartment of Energy
Placing your clothes dryer in a cold basement will make the dryer ____ - answerLess
efficient
What steps can lead to an energy efficient operation of a dishwasher? - answerAll of the
Above
-wash only full loads
-use the no-heat air dry feature
-don't pre-rinse dishes before putting them in the dishwasher
Solar water heating systems reduce the amount of heat that must be provided by
conventional energy sources such as electricity - answerTrue
The energy guide labels must specify the ___ of the particular model - answerEstimated
annual energy consumption
Calculate the amount of heat energy required to heat 159 lbs of water from 52ºF to
138ºF - answer13,674 Btus
Amount of heat energy required =159*(138-52) = 13,674
A water heater heats 190 gal of water from 56ºF to 140ºF every day. What is the annual
energy requirement of the water heater? - answer48,350,820 Btus
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