Deck 7: Energy Efficiency Lighting and Entertainment Systems

Question 1

Most electronics being marketed meet the minimum standards required to carry the government's ____________________ label.

Answer 1

Energy Star

Question 2

Compare the light output for 'soft white,' 'frosted,' and clear light bulbs.

Answer 2

The lumen values for 'soft white' bulbs will be slightly lower than for standard 'frosted' bulbs of the same power.Clear bulbs will emit a brighter light than equally powered coated bulbs.

Question 3

Explain why it may or may not be justified to keep a computer system on continuously.

Answer 3

The cost of keeping a computer system on continuously may be justified, particularly if it is used for business as well as personal purposes.Because we have become accustomed to instant communication and feel that any delay is unacceptable, a continuous Internet link may be worth the price of keeping a home computer running all the time.But if a cell phone can provide the same data link, it will be the most cost effective option, at least as far as power consumption is concerned.Likewise, a tablet or laptop computer without attached peripherals and a smaller screen will require less power to operate than a full desktop system.

Question 4

Discuss the efficiency of LEDs compared to CFL or incandescent lights.

Question 5

The devices that contribute to the phantom load are sometimes referred to as ____________________ appliances because even when asleep they are constantly drawing power.

Question 6

Most CFLs contain a mixture of several ____________________, each of which emits one band of color.

Question 7

Compact Florescent Lights (CFLs) are the type of electric light source most commonly used throughout the world over the last century.

Question 8

Describe how to maximize energy efficiency of a game console.

Question 9

LEDs are small, solid light bulbs that are extremely energy efficient.

Question 10

Refrigerators should be installed in a way that vents the discharged heat to the outside.

Question 11

Discuss the efficiency of CFLs compared to incandescent lights.

Question 12

The best setting for food preservation in a refrigerator is ____________________ degrees F.

Question 13

Discuss some ways to reduce power consumption in a freezer.

Question 14

A recent government Energy Star report found that use of consumer electronics products accounted for less than 25 percent of total household electricity consumption.

Question 15

Discuss the energy efficiency of workshop equipment.

Question 16

Treadmills and similar exercise and fitness equipment have powerful ____________________ and consequently consume large amounts of electricity in operation.

Question 17

In December 2007, the federal government enacted the ____________________ Act of 2007, which requires all general-purpose light bulbs that produce 310-2600 lumens of light to be 30% more energy efficient than current incandescent bulbs beginning in 2012.

Question 18

An incandescent light uses an electric current to heat a(n) ____________________ wire to a high temperature until it glows or incandesces.

Question 19

CFLs consist of two main components: a gas-filled tube (also called a bulb) and an electronic ____________________.

Question 20

CFLs are small versions of full-sized florescent tubes that have been used for decades in commercial lighting venues.