Green tech

How much would it cost to aperare an 1800- watt a dishwasher if the cost of electricity is 10 cent per kilowatt- hour and the dishwasher is used 4 hours a day? A) $7.29 per day B) $1.80 per day C) $0.18 per day D) $0.72 per day

$0.72 per day

An energy star reared appliance typically uses a minimum of A) 5% less water and energy than a standard efficiency appliance B) 10% less water and energy than a standard efficiency appliance C) 25% less water and energy than a standard efficiency appliance D) 50% less water and energy than a standard efficiency appliance

10% less water and energy than a standard efficiency appliance

The average amount of outside air per occupant that must be brought into a building in order to maintain healthy indoor air quality is A) 10 cfm B) 15 cfm C) 20 cfm D) 25 cfm

15 cfm

Products with energy star label generally use how much less energy than required by federal standards? A) 10 to 20% B 20 to 30% C) 30 to 40% D) 40 to 50%

20 to 30%

Both commercial and domestic refrigeration combined account for what percentage of global energy consumption? A) 15% B) 20% C) 25% D) 30%

20%

Water closets typically account for approximately A) 15% of residential water consumption B) 20% of residential water consumption C) 50% of commercial water consumption D) 25% of commercial water consumption

20% of residential water consumption 50% of commercial water consumption

HFC refrigerant leaks account for what percent of a supermarket's carbon footprint? A) 15% B) 20% C) 25% D) 30%

25%

A traditional standard efficiency water closet would typically use A) 1 gallon of water per flush B)3 gallon of water per flush C)5 gallon of water per flush D) 6 gallon of water per flush

3 gallon of water per flush

Sprinkler watering systems typically waste A) 10% of the sprayed water through evaporation before ground absorption occurs B) 20% of the sprayed water through evaporation before ground absorption occurs C) 30% of the sprayed water through evaporation before ground absorption occurs D) 40% of the sprayed water through evaporation before ground absorption occurs

30% of the sprayed water through evaporation before ground absorption occurs

Two stage evaporative coolers can reduce energy consumption by A) 20 to 35% B) 30 to 40% C) 50 to 65% D) 60 to 75%

60 to 75%

Renewable energy is A)single source energy B)energy used to create movement C)a relatable source of energy D)made from natural gas power unit

A repeatable source of energy

Energy managers are responsible for A) purchasing energy usage B)evaluating energy usage C)obtaining energy information D)all of the above

All of the above

Which of the following is a method of increasing efficiency? A)building maintenance B)energy recovery C)equipment replacement D)all of the above

All of the above

Which of the following is an example of sustainable energy? A) solar B)wind C)water D)all of the above

All of the above

A heat load calculation determines A)the heat gain and heat loss of a structure B)the required size of comfort heating and cooling system C)the smoking of laten heat gain in the summer D)all of the answers are correct

All of the answers are correct

Which of the following is correct mathematical expression to calculate power A) voltage x resistance B)amperage x voltage C) voltage / amperage D) amperage / resistance

Amperage x voltage

The efficiency rating scale for furnaces and boilers is A)annual fuel utilization efficiency(AFUE) B)coefficient of performance(COP) C)energy efficiency ratio(EER) D)seasonal energy efficiency ratio(SEER)

Annual fuel utilization efficiency(AFUE)

A diagnostic test used to measure building air tightness locate air leaks and aid in the observation of air leaks characteristic is the A)pressurization test B)blower door test C)pressure pan test D)duct blaster test

Blower door test

The basic technology or operating structure of automated controls uses A)analog signals B)digital signals C) both analog and digital signals D)neither analog nor digital signals

Both analog and digital signals

BAS is the acronym for A)a type of automated building control B)building always system connected C)broad-band associates system type of network D)building automation system

Building automation system

Building Information Modeling (BIM) is comprised of which two computer programs A)heat loss programs and loan calculation B)building simulation and energy efficiency programs C)load calculation and building simulation programs D)building CAD and Duct layout programs

Building simulation and energy efficiency program

A fuel cell is an electrochemical energy conversion device that uses____ go produces electricity A)chemical reactions B)same material found in batteries C)solar light D) solar winds

Chemical reactions

CBECS is the acronym for A)Commercial baseline energy consumption survey B)commercial building energy consumption survey C)commercial building electrical consumption survey D)commercial building emergency control system

Commercial Building Energy consumption Survey

The natural rising of warmer air the light a structure to remove heat is know as A)conduction B)convection C)radiation D)ventilation

Convection

The type of solar cooling system that creates a cooling effect but doesn't actually cool is A)absorption B)desiccant C)photovoltaic D) thermal

Desiccant

The test used for testing duct system tightness is the A)duct pressurization test B)blower door test C)pressure pan test D)pressure audit test

Duct pressurization test

What electrical motor on the market today is replacing older single phase motors? A) split phase motor B) CSR motor C) DC modified motor D) ECM motor

ECM motor

Wind turbines can produce A) alternating current B) direct current C) either direct or alternating current

Either direct or alternating current

What is the main advantage a nuclear power plant? A) produces more energy than fossil fuel plants B) fuel roads last forever C) plants don't need a spruced of water to operate D) emission-free electricity

Emission-free electricity

The rating scale used to show efficient a room air conditioner is operating based on the power being consumed is A)annual fuel utilization efficiency(AFUE) B)coefficient of performance(COP) C)energy efficiency ratio(EER) D)seasonal energy efficiency ratio(SEER)

Energy efficiency ratio(EER)

Wind turbines are different from windmills. A wind turbines covered kinetic energy produced from the wind into usable mechanical work and windmills converts energy from the wind to produce electricity A)true B)false

False

List three types of comfort heating systems

Forced air furnace, condensing furnace, and modulating

Approximately 74 percent of the worlds electricity is produced by what method? A) solar B) wind C) fossil fuel D) hydro

Fossil fuel

Substance which have the ability to absorb and hold heat in the earth's atmosphere are A) chlorofluorocarbons(cfcs) B) greenhouse gases(ghgs) C) hydrochlorofluorocarbons(hcfcs) D) hudrofluorocarbons

Greenhouse gases(ghgs)

List three environmental benefits that result from performing a combustion analysis

Higher appliance efficiency, improved performance reliability, cleaner emissions, and less carbon monoxide

Which material is designed to prevent or control the flow of air between conditioned and unconditioned spaces is?

House wrap

The terms used to describe uncontrolled air movement into a building is A)exfiltration B)infiltration C)mechanical ventilation D)natural ventilation

Infiltration

In the space below list four areas of energy saving construction techniques that play a part in potential energy saving

Initial home design, lighting, insulation, and appliances

Which type of heater heat water on demand A) condensing tank heater B)instantaneous boiler C)radiant tankless boiler D) tank and tube boiler

Instantaneous boiler

Floors over unconditioned crawl spaces should be A)made of concrete B)covered with carpet C)painter D)insulated

Insulated

The building envelop : A) is part of a structure in contact with both conditioned and unconditioned spaces B)holds all of the manufacturer's literature for the appliances installed in a home C)is the vapor barrier or house warp on the outside of the structure D)is the air barrier between the heating and air conditioning system

Is part of a structure in contact with both conditioned and unconditioned spaces

What term is used to determine how efficient a light bulb is at creating visible light versus heat, and expressed in lumens per watt? A) incandescent efficiency B) LED C) ohms modified law D) Luminous efficacy

Luminous efficacy

Which of the following would be considered a ghost load? A) appliances such as toasters B) computers C) phone chargers D) television

Television

Which of the following is a good definition of energy efficiency? A)the energy used by a process,divide by the energy output B)the useful work produced divide by the energy used C)the energy input for a year multiplied by t cooling output for a season D)the heating output for a season divide by the Btu for the season

The useful work produceddivide by the energy used

The hydrologic cycle is the A) cycle of water from its first point of use until it's returned to the environment B) cycle water follows when used in hydroelectric power generation C) treatment cycle of water when used for irrigation D) treatment of black water used for flushing toilets

Treatment cycle of water when used for irrigation

Gray water can be used for flushing toilets A) true B) false

True

Photovoltaics panels produce energy that all household appliance Can use, but must be converted to alternating current? A) true B) false

True

The first hour rating represents how much hot water tank type unit can supply in a one hour period if it starts with a full tank of hot water A) true B) false

True

The installation and proper use of a high efficiency dual flush water closet is an effective water conservation strategy A) true B) false

True

The installation of high efficiency plumbing fixtures and fitting is effective method of reducing water consumption A) true B) false

True

The most effective means of controlling water hammer is a measured compressible cushion of air which is separated from the water system A) true B) false

True

Air sealing is the process of sealing A) the concrete floor B)the air ducts C)unintentional air infiltration points of a structure D)the vent system in a structure future

Unintentional air infiltration points of a structure

Wind energy generators are best used in locations where? A) wind is constant B) wind blows strongly at all time C)average wind speed is low but steady D)average wind speed is low and there are few obstacles

Wind is constant

Uncontrolled air movement out of a structure is know as A)exfiltration B)infiltration C)sick building syndrome D)ventilation

Exfiltration

A fuel cell requires monthly recharging to provide maximum output A) true B) false

False

Fossil fuels have a very low carbon footprint and is the main reason they're still used today A) true B) false

False

Water from kitchen sinks, garbage disposals and dishwasher are classified as gray water A) true B) false

False

Most people are comfortable when the air temperature is 75f with 50% relative humidity A)true B)false

True

The calculation is used to determine the BTU rating or size of the heating and/or cooling system required for comfort conditioning of structure A)true B)false

True

When sized correctly thankless or demand water heaters can produce a seemingly endless supply of hot water A) true B) false

True

Harvested rain water can be used for flushing toilets and garden irrigation A) true B) false

True

The efficiency of an air-to-air heat pump expressed as a ratio of heat energy transferred to units of energy used is its A)annual fuel utilization efficiency(AFUE) B)coefficient of performance(COP) C)energy efficiency ratio(EER) D)seasonal energy efficiency ratio(SEER)

Coefficient of performance(cop)

Which furnace is typically 10 to 14 percent more efficient thank a standard efficiency furnace A) induces draft B)radiant up-flow C)condensing D) primary boiler

Condensing

Any area which allows light to pass in an external wall of building is ASHRAE's definition of A) R value B)U value C)fenestration D)saturation

Fenestration

The ratio of estimated seasonal heating output,divided by seasonal power consumption for an average us climate is a heat pump's A)annual fuel utilization efficiency (AFUE) B)energy efficiency ratio(EER) C)heating season performance factor (HSPF) D)seasonal energy efficiency ratio(SEER)

Hearing season performance factor(HSPF)

What are the two types of solar water heating system

Passive and active

The rating scale used to measure how efficiently a cooling system will operate over an entire season is? A)annual fuel utilization efficiency(AFUE) B)coefficient of performance(COP) C)energy efficiency ratio(EER) D)seasonal energy efficiency ratio(SEER)

Seasonal energy efficiency ratio(SEER)

Which of the following is the least efficient type of window? A)double pane B)low e coated single pane C)single pane D)triple pane

Single pane

Insulation will: A)stop all heat transfer B)slow down heat transfer C)increase heat transfer to the outside D)will cost more than the energy it saves

Slow down heat transfer

Potable water by definition is? A) suitable for human consumption B) not suitable for human consumption C) typically best used for irrigation D) the best choice for flushing toilets

Suitable for human consumption