When sunlight strikes a solar cell, light of certain wavelength will knock out electrons from semiconductor, thereby producing electric current

When sunlight strikes a solar cell, light of certain wavelength will knock out electrons from semiconductor, thereby producing electric current

Answer: true

Which of the following is not used for passive heating and cooling of homes?

Which of the following is not used for passive heating and cooling of homes?

Answer: heat exchanger

Which of the following is not true about solar trough (distributed collector)?

Which of the following is not true about solar trough (distributed collector)?

Answer: boiler is used to generate steam

Ventilation utilizes radiative heat transfer to promote passive cooling

Ventilation utilizes radiative heat transfer to promote passive cooling

Answer: false

Presently, solar cells have efficiency of about

Presently, solar cells have efficiency of about

Answer: 15-20%

Electricity produced from a solar power plant can be used to meet peak load power requirements

Electricity produced from a solar power plant can be used to meet peak load power requirements

Answer: true

Passive solar design takes advantage of bricks, stones and dark tiles inside the house to absorb and trap heat

Passive solar design takes advantage of bricks, stones and dark tiles inside the house to absorb and trap heat

Answer: true

Which of the following is not a passive solar design for residential heating

Which of the following is not a passive solar design for residential heating

Answer: using fans or pumps to create heat

The US is the largest producer of hydroelectric energy

The US is the largest producer of hydroelectric energy

Answer: false

Which type of hydroelectric facility is a conventional dam?

Which type of hydroelectric facility is a conventional dam?

Answer: impoundment

Approximately what percentage of US energy is hydroelectric?

Approximately what percentage of US energy is hydroelectric?

Answer: 10%

Tidal power can be easily harnessed anywhere there is a tide.

Tidal power can be easily harnessed anywhere there is a tide.

Answer: false

Hydroeletric energy pollutes the atmosphere.

Hydroeletric energy pollutes the atmosphere.

Answer: false

Pumped storage is non-renewable.

Pumped storage is non-renewable.

Answer: false

Hydroelectric schemes are an obstacle to fish migration

Hydroelectric schemes are an obstacle to fish migration

Answer: true

Which is not an advantage of hydropower?

Which is not an advantage of hydropower?

Answer: nonaltering to habitat

A penstock carries water to a turbine.

A penstock carries water to a turbine.

Answer: true

What type of energy does water stored behind a dam have?

What type of energy does water stored behind a dam have?

Answer: potential energy

What is the hydrologic cycle driven by?

What is the hydrologic cycle driven by?

Answer: solar energy

Recreation is the main purpose of US dams

Recreation is the main purpose of US dams

Answer: true

Tides are caused by gravitational force between sun and Earth

Tides are caused by gravitational force between sun and Earth

Answer: false

Which of the following is a disadvantage of hydropower?

Which of the following is a disadvantage of hydropower?

A) catastrophic failure
B) disruption of natural flow
C) alter habitat


Answer: ALL

Where is Three Gorges dam located?

Where is Three Gorges dam located?

Answer: China

Which form of hydro power accesses previously used energy?

Which form of hydro power accesses previously used energy?

Answer: pumped storage

In the US, we have adequate amount of land to cultivate biomass to meet all our energy demands.

In the US, we have adequate amount of land to cultivate biomass to meet all our energy demands.

Answer: false

Waste to energy plants require removal of all toxic vapors using flue gas scrubbing to prevent air pollution.

Waste to energy plants require removal of all toxic vapors using flue gas scrubbing to prevent air pollution.

Answer: true

In a waste to energy plant, significant amounts of ash are produced.

In a waste to energy plant, significant amounts of ash are produced.

Answer: true

Which of the following is an energy recovery methodology adopted to process municipal solid waste?

Which of the following is an energy recovery methodology adopted to process municipal solid waste?

A) Landfill gas recovery
B) Combustion and cogeneration
C) Pyrolysis


Answer: ALL

The amount of municipal waste generated per day is decreasing everyday.

The amount of municipal waste generated per day is decreasing everyday.

Answer: false

Which of the following contributes the most towards Municipal solid waste?

Which of the following contributes the most towards Municipal solid waste?

Answer: paper and paper board

Which of the following is not true about biodiesel?

Which of the following is not true about biodiesel?

Answer: low NOx emissions

Amount of CO and particulate matter emissions from biodiesel is less compared to petroleum diesel.

Amount of CO and particulate matter emissions from biodiesel is less compared to petroleum diesel.

Answer: true

Energy per gallon produced by biodiesel is less than petroleum based diesel by

Energy per gallon produced by biodiesel is less than petroleum based diesel by

Answer: 8%

Amount of NOx emission from biodiesel is negligible.

Amount of NOx emission from biodiesel is negligible.

Answer: false

Most of the bioethanol produced in United States comes from

Most of the bioethanol produced in United States comes from

Answer: Iowa

The production of ethanol and biodiesel in United States is increasing.

The production of ethanol and biodiesel in United States is increasing.

Answer: true

Addition of ethanol to gasoline reduces the amount of emissions from the fuel.

Addition of ethanol to gasoline reduces the amount of emissions from the fuel.

Answer: true

Which of the following cannot be converted into alcohol or biogas by biological conversion.

Which of the following cannot be converted into alcohol or biogas by biological conversion.

Answer: heating value

Ethanol has a higher octane number than gasoline.

Ethanol has a higher octane number than gasoline.

Answer: true

Ethanol has a higher heating value than gasoline.

Ethanol has a higher heating value than gasoline.

Answer: false

Presently, the amount of ethanol produced from biomass amounts to

Presently, the amount of ethanol produced from biomass amounts to

Answer: 14 billion gallons

Production of bioethanol from corn is more efficient than from sugarcane.

Production of bioethanol from corn is more efficient than from sugarcane.

Answer: false

Corn can be used to produce ethanol.

Corn can be used to produce ethanol.

Answer: true

Transesterification is the process used to convert vegetable oil to biodiesel.

Transesterification is the process used to convert vegetable oil to biodiesel.

Answer: true

Which of the following is a product of thermal conversion of biomass?

Which of the following is a product of thermal conversion of biomass?

Answer: syngas

Syngas can be produced from biomass by reaction with steam.

Syngas can be produced from biomass by reaction with steam.

Answer: true

Pyrolysis is the process of heating biomass in the absence of air.

Pyrolysis is the process of heating biomass in the absence of air.

Answer: true

Which of the following cannot be converted into alcohol or biogas by biological conversion.

Which of the following cannot be converted into alcohol or biogas by biological conversion.

Answer: microalgae

Bagasse is an agricultural waste product obtained from sugarcane.

Bagasse is an agricultural waste product obtained from sugarcane.

Answer: true

The United States produces most of its bioethanol from sugarcane.

The United States produces most of its bioethanol from sugarcane.

Answer: false

Switch grass is a good source of biomass because

Switch grass is a good source of biomass because

A) it grows quickly
B) it has low moisture content
C) does not require fertilizers or pesticides


Answer: ALL

Potential biomass crops should not

Potential biomass crops should not

Answer: need high maintenance

The amount of power generated from biomass power plants in the United States is

The amount of power generated from biomass power plants in the United States is

Answer: 7000 MW

Biomass has gross calorific value higher than coal.

Biomass has gross calorific value higher than coal.

Answer: false

Which among the following variable is/are used for biomass classification?

Which among the following variable is/are used for biomass classification?

A) Moisture content
B) Silica content
C) Calorific value


Answer: ALL

The amount of ash content is an important parameter in determining the quality of biomass fuel.

The amount of ash content is an important parameter in determining the quality of biomass fuel.

Answer: true

High heating value or gross calorific value is the amount of energy released by complete combustion of 1 lb of fuel.

High heating value or gross calorific value is the amount of energy released by complete combustion of 1 lb of fuel.

Answer: true

Which of the following is not an advantage of biomass energy?

Which of the following is not an advantage of biomass energy?

Answer: no NOx emissions

An ideal biomass cycle does not produce any net carbon emissions.

An ideal biomass cycle does not produce any net carbon emissions.

Answer: true

United States is the larges producer of energy from biomass consumption.

United States is the larges producer of energy from biomass consumption.

Answer: false

Biomass can be used to meet which energy demands?

Biomass can be used to meet which energy demands?

A) Electricity
B) Heat
C) Transportation fuels


Answer: ALL

Which of the following is an energy crop?

Which of the following is an energy crop?

A) Poplars
B) Willows
C) Switchgrass


Answer: ALL

Energy crops are cultivated primarily for biomass production.

Energy crops are cultivated primarily for biomass production.

Answer: true

Which of the following is an example of biomass derived from agricultural residue?

Which of the following is an example of biomass derived from agricultural residue?

Answer: bagasse

She demonstrated her ____ when donating half of her salary to her favorite charity.

She demonstrated her ____ when donating half of her salary to her favorite charity.

Answer: Magnanimity

The cafe was a favorite gathering place for ____ in the 1950s-1960s.

The cafe was a favorite gathering place for ____ in the 1950s-1960s.

Answer: Beatnik

The ____ rhythms in Mozart's pieces are an interesting contrast the longer melodies in his music.

The ____ rhythms in Mozart's pieces are an interesting contrast the longer melodies in his music.

Answer: Staccato

My ____ studies began at the early age of four years, when I memorized all the bird books in the house.

My ____ studies began at the early age of four years, when I memorized all the bird books in the house.

Answer: Ornithological

The tabloid article about Kim Kardashian's and Harry Potter's newborn baby was clearly _____, for too many reasons to include here.

The tabloid article about Kim Kardashian's and Harry Potter's newborn baby was clearly _____, for too many reasons to include here.

Answer: Apocryphal