quiz lesson 5

More efficient compared to top loading

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Unformatted text preview: m 67oF to 136oF. Correct A ) 12213 Btus Amount of heat energy required = 177 x (136- 67) = 12213 BTUs An old refrigerator consumes 175 W of power. Assuming that the refrigerator operates for 19 hours every day, what is the annual operating cost of the refrigerator, if the cost of electricity is $0.08 per kWh? Correct B ) 97.09 Annual operating cost = 175/1000 x 19 x 0.08 x 365 = $97.09 Calculate the amount of heat energy required to heat 234 lbs of water from 59oF to 125oF. Correct B ) 15444 Btus Amount of heat energy required = 234 x (125- 59) = 15444 BTUs DOE stands for __________. Correct D ) Department Of Energy DOE - Department of Energy What kind of washer is most efficient? Correct A ) front loading Front loading clothes washer is the most efficient washer. Calculate the amount of heat energy required to heat 159 lbs of water from 52oF to 138oF. Correct D ) 13674 Btus Amount of heat energy required = 159 x (138- 52) = 13674 BTUs 155 gal of water is heated in a heater from 63oF to 123oF everyday by a family. What is the annual energy requirement of the water heater? Correct A ) 28174350 1 gal of water weighs 8.3 lbs Annual Energy requirement = 155 x 8.3 x (123- 63) x 365 = 28174350 BTUs The Energy Guide labels must specify the _____ of the particular model. Correct C ) Estimated annual energy consumption The Energy Guide labels must specify the Estimated annual energy consumption of the particular model Horizontal axis (front loading) clothes washer are more efficient compared to top loading models. Correct B ) TRUE Horizontal axis (front loading) clothes washer are more efficient compared to top loading models Calculate the amount of heat energy required to heat 177 lbs of water from 67oF to 136oF. Correct A ) 12213 Amount of heat energy required = 177 x (136- 67) = 12213 BTUs Placing your clothes dryer in a cold basement will make the dryer _____. Correct B ) Less efficient Placing your clothes dryer in a cold basement will make the dryer less...
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This note was uploaded on 09/24/2013 for the course EGEE 102 taught by Professor Pisupati,sarmave during the Spring '07 term at Penn State.

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