Energy guide labels must specify the

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: residential or commercial lighting installation, 50% or more energy is wasted by obsolete equipment, inadequate maintenance, or inefficient use Natural gas water heaters are cheaper to install than electric water heaters. Correct B ) FALSE Natural gas water heaters cost more to install than electric water heater. Insulating hot water pipes reduces the energy consumption for water heating. Correct A ) TRUE Insulating hot water pipes reduces the energy consumption for water heating Which one of the following actions is not likely to improve the efficiency of a refrigerator? Correct A ) switching the motor from a DC motor to AC motor Switching from a DC motor to an AC motor will not improve the efficiency of a refrigerator Keep a freezer filled to capacity for most efficient operation. Correct A ) TRUE For most efficient operation, keep freezer filled to capacity. The kitchen in your house measures 8 ft by 15 ft. You need to have 50 footcandles of illumination in the room. How many 60 watt bulbs will be required if one bulb emits 858 lumens. (1 footcandle = 1 lumen/sq.ft) Correct A ) 7 Area of the room = 8 x 15 = 120 sq.ft Lumens required = 50 x 120 = 6000 lumens # of bulbs required = 6000/858 = 6.9 bulbs What kind of label do highly energy efficient appliances have? Correct B ) Energy Star label Highly Energy efficient appliances have an Energy Star label. Buying an expensive energy efficient water heater will most likely save _____ in the long- term. Correct C ) Both money and energy Buying an expensive energy efficient water heater will most likely saves both money and energy in the long- term Water heating bills account for about 14 percent of the average utility bill. How can you reduce these bills? Correct E ) all of the above Water heating bills can be reduced by 1. use less hot water 2. turn down the thermostat on your water heater 3. insulate your water heater 4. buy a new, more efficient water heater. An old refrigerator consumes 198 W of power. Assuming that the refrigerator operates for 15 hours every day, wha...
View Full Document

This note was uploaded on 09/24/2013 for the course EGEE 102 taught by Professor Pisupati,sarmave during the Spring '07 term at Pennsylvania State University, University Park.

Ask a homework question - tutors are online