Question 1

A load that consumes electricity even when the load is not performing its intended function are called ghost loads.

Accepted Answer

False

Question 2

Electric heat pump water heaters are more than __________ as efficient as electric resistance water heaters.

Accepted Answer

Electric heat pump water heaters are more than two times as efficient as electric resistance water heaters because they use electricity to move heat from one place to another instead of generating heat directly, making them much more energy-efficient.

Question 3

Fluorescent lamps only use one-quarter of the electricity that incandescent lamps use and they last up to ten times longer.

Accepted Answer

This statement is true. Fluorescent lamps are much more energy efficient than incandescent lamps and have a much longer lifespan.

Question 4

Without mechanical ventilation, the __________ level inside the house will rise to an unhealthy level and the durability of the structure may suffer as well.

Accepted Answer

Without mechanical ventilation, the humidity level inside the house may rise to an unhealthy level, leading to the growth of mold and mildew, and potentially causing structural damage.

Question 5

Attenuation is the internationally recognized unit of loudness and is measured in decibels (dB).

Accepted Answer

Attenuation refers to the reduction in power of a signal, sound, or other physical property, while loudness is a subjective measure of sound intensity perceived by the human ear and is not measured in decibels (dB). Decibels are used to quantify sound intensity levels, not loudness directly, and are not a unit of loudness.

Question 6

The higher the CFM number, the more air an exhaust fan can exhaust into the outside air.

Accepted Answer

CFM (Cubic Feet per Minute) is a measure of the amount of air a fan can move in a minute. Therefore, the higher the CFM number, the more air the fan can exhaust into the outside air.

Question 7

The __________ of a house blocks air from moving between the inside of the house and the outside and holds the conditioned (heated or cooled) air in the house.

Accepted Answer

An air barrier is a building component that blocks the movement of air between the interior and exterior of a building. It helps to maintain a comfortable and consistent indoor temperature by preventing conditioned air from leaking out and unconditioned air from infiltrating the building. Floors, basements, and roofs can all contribute to a building's overall air barrier, but none of them individually function as the air barrier for the entire building.

Question 8

Photovoltaic is the name used to describe the effect of sunlight striking a specially prepared surface and producing electricity.

Accepted Answer

Photovoltaic technology uses solar cells to convert sunlight into electrical energy.

Question 9

Energy efficiency is one of the most important features of a green home.

Accepted Answer

Energy efficiency helps reduce the amount of energy needed to run a home, leading to a decrease in carbon footprint and energy bills. This is a key aspect of a green home.

Question 10

There are three features of exhaust fans to consider when selecting one: electrical efficiency, noise level, and __________.

Accepted Answer

The answer of There are three features of exhaust fans...

Question 11

Electric water heaters supply domestic hot water and come in a remotely located tank type that supplies the hot water needs of an entire house or a ___________ type that is located near the fixture(s) it supplies.

Accepted Answer

Tankless water heaters are the type that is located near the fixture(s) it supplies.

Question 12

Automatic controls such as timers will reduce electricity waste in a house.

Accepted Answer

Automatic controls such as timers can turn off or reduce the energy consumption of electronics and appliances when not in use, thus reducing electricity waste and ultimately saving money on utility bills.

Question 13

Fan power is measured in __________.

Accepted Answer

Fan power is typically measured in cubic feet per minute (CFM), which is a measure of the volume of air that the fan can move in one minute. Foot pounds and square feet per minute are not typically used as units of measurement for fan power.

Question 14

A __________ can be set to lower the temperature inside the house at night while home owners are sleeping and when they are away during the day at work or school.

Accepted Answer

A programmable thermostat can be set to lower the temperature inside the house at specific times, such as at night while homeowners are sleeping or when they are away during the day at work or school. This can save energy and money on heating bills. Motion sensors and occupancy sensors do not control temperature, and dimmer switches control lighting, not temperature.

Question 15

Green building is the process of designing and building a home that minimizes its impact on the environment both during construction and over its useful life.

Accepted Answer

Green building focuses on reducing the negative impact on the environment during both construction and the life of the building.

Question 16

Energy efficient appliances may cost __________ less efficient models; but the reduced operation expense more than offsets the upfront cost over the life of the equipment.

Accepted Answer

Energy-efficient appliances typically cost more than less-efficient models initially, but the savings in operational costs over time can compensate for the higher upfront price.

Question 17

One of the best choices for energy efficient lighting is incandescent hardwired Energy Star qualified lighting fixtures.

Accepted Answer

Incandescent lighting is not considered energy efficient and Energy Star qualified lighting fixtures typically use LED or CFL bulbs.

Question 18

A family of chlorinated chemicals that are toxic under certain exposure conditions are called dioxins.

Accepted Answer

This statement is true. Dioxins are a family of chlorinated chemicals that can be toxic and harmful to human health when exposure occurs in certain conditions.

Question 19

One way to eliminate lights being left on when either they are not needed or when no one is in a room is to install a __________ to turn lights on and off automatically.

Accepted Answer

A motion detector senses movement and can turn lights on automatically when someone enters a room and off when they leave, eliminating the need for someone to manually turn lights on and off. Dimmer switches allow for adjustable lighting levels but do not address the issue of lights being left on when not needed. Photo cells respond to changes in light levels but do not detect motion. Double-pole switches are used for controlling large appliances and do not address the issue of lights being left on unnecessarily.

Question 20

LED lamps are not as energy efficient as fluorescent lighting fixtures and they don't last as long.

Accepted Answer

LED lamps are actually more energy efficient than fluorescent lighting fixtures and can last much longer.

Quiz 21: Green Wiring Practices