EGEE 101 Final Hard Q's
Methane turns into liquid at
-164 degree C
21 million Joules of chemical energy are supplied to a boiler in a power plant. 5,000,000 Joules of energy are lost up the smokestack. The boiler radiates 1.5 million Joules of heat to the atmosphere. What is the efficiency of the boiler? (2 points)
.690
The useful output from a heat engine is 962 joules. The energy that is wasted is 4428 J? What is the efficiency of the engine?
0.1784
How many hydrogen atoms are present in coal for one carbon atom?
0.8
How often does a fuel rod need to be replaced in the nuclear power plant?
1-3 years
What fraction of home energy is used for lighting in the US?
1/4
Approximately what percentage of US energy is hydroelectric?
10%
If a cycloparaffin compound has six carbon atoms, how many hydrogen atoms are present in the molecule?
12 hydrogen atoms
Presently, the amount of ethanol produced from biomass amounts to
14 billion gallons
Presently, solar cells have efficiency of about
15-20%
What is the power output of the largest geothermal power plant located in North California?
1700 MW
If a paraffin compound has 8 carbon atoms, how many hydrogen atoms are present in the molecule?
18 hydrogen atoms
What percent of the nation's electricity can wind potentially supply according to Pacific Northwest Laboratory?
20%
What is the practical efficiency of wind energy ?
20-40%
Approximately, what percentage of world coal reserves does United States possess?
25%
What is the approximate current U.S. geothermal power plants total generating capacity?
2700 MW
The concentration of nuclear fuel in a nuclear power plant is
3-4%
What is the approximate cost of electricity from wind energy ?
3-5 Cents / KWH
What does the Betz limit state the maximum efficiency of a wind turbine is?
59.3%
The amount of power generated from biomass power plants in the United States is
7000 MW
Energy per gallon produced by biodiesel is less than petroleum based diesel by
8%
What is the approximate carbon content in petroleum crude?
85-90%
The performance of gasoline with octane number 87 is similar to the performance of a fuel containing
87% octane 13% heptane
Which among the following is a secondary pollutant?
Acid rain
What is the best way to cut home heating or cooling bills?
Add Insulation
Which coal has the highest fixed carbon content?
Anthracite
Which hydrocarbons have benzene and rings of benzene?
Aromatics
In a DAF basis analysis, which of the following properties are excluded
Ash and Moisture
Which energy conversion device typically has the lowest energy efficiency?
Automobile engine
Which of the following is an example of biomass derived from agricultural residue?
Bagasse
Which geothermal power plant system has zero emissions?
Binary
What is the major difference between the Flash system and Binary system?
Binary uses secondary fluid
Most of the coal found in United States is
Bituminous coal
What do industries use to generate steam and hot water?
Boiler fuel
Which of the following is not true about solar trough (distributed collector)?
Boiler is used to generate steam
How does CO affect human health?
By impairing visibility, Affecting Central Nervous system, & Heart attack
The formula for paraffin cyclohexane is
C6H14
What is the unit used to measure the amount of cooling needed in summer time?
CDD
Which is the main ingredient in natural gas?
CH4
Which of these is the major constituent of natural gas?
CH4
Which among the following is not a primary pollutant?
CO2
Which of the following is a greenhouse gas?
CO2
Which one of the following is an example of clean coal technology?
Carbon dioxide sequestration
What is the problem with aromatics in the petroleum industry?
Carcinogenic
In the process of mining coal, the useful energy output is in the form of __________ energy.
Chemical
Which industry uses the most energy?
Chemical
Which United States industry is a heavy energy user?
Chemical products, Oil refining, Paper making, Metal refining
Which of the following energy transformations is not possible?
Chemical to Nuclear
Where is Three Gorges dam located?
China
Which fossil fuel contributes the most to SO2 emissions?
Coal
Which fossil fuel contributes the most to particulate matter emission?
Coal
Which among the fossil fuel reserves are abundantly available in United States?
Coal and Natural Gas
Which component in the refrigerator raises the temperature of the refrigerant?
Compressor
Which of the following is the only direct use of electrical energy without converting it to another form?
Defibrilator
Which of the following properties is not measured during Proximate analysis of coal?
Density
What is the separation of materials based on differences in the volatility called?
Distillation
A kilowatt-hour (kWh) is a unit of
Electrical Energy
What is the energy of electrons in motion called?
Electricity
Which is the most common energy source used in commercial buildings?
Electricity
A pound of chicken contains 306 Calories of chemical energy. 3,439 Calories were used to produce and deliver that chicken to you. This 3,439 Calories is an example of
Embedded Energy
"My backyard solar collectors produce 350 kWh of electricity." Am I talking about energy or power?
Energy
When analyzing how much energy is required to produce an energy product, e.g. ethanol from corn, we are talking about
Energy Return on Energy Invested - EROI
Embedded energy is
Energy of whatever form that was required to produce an object
Which component of a refrigerator lowers the temperature of the refrigerant?
Expansion valve
Energy demand is a/an
Exponential function - the longer it goes, the more rapidly it grows
A geothermal power plant has a low initial cost.
False
Africa has the world's largest reserves of natural gas.
False
Amount of NOx emission from Biodiesel is negligible
False
An anemometer is used to predict weather.
False
Anthracite has higher volatile matter content than Bituminous coal.
False
Beta decay increases the mass number by 1.
False
Biomass has gross calorific value higher than coal.
False
CO emissions are due to complete combustion of carbon in fossil fuels.
False
Central distribution is more efficient than distributed generation for transmitting electricity.
False
Coal ash used to be a big pollutant but now it is captured and stored safely.
False
Coal can be used directly to produce "pig iron" by mixing it with iron ore in a blast furnace.
False
Coke is produced by combustion of coal in a furnace.
False
Control rods control the nuclear reaction in a reactor by absorbing protons.
False
Ethanol has a higher heating value than gasoline.
False
Geothermal energy generates a lot of nitrogen and sulfur.
False
H2S is desirable in natural gas.
False
House facing south is a good passive solar design in southern hemisphere
False
In all nuclear reactions, the sum of the mass numbers on the left hand side of the equation equals the sum of the atomic numbers on the right hand side of the equation.
False
In the US, we have adequate amount of land to cultivate biomass to meet all our energy demands.
False
It's easily possible to have a modern society without using any energy beyond heat from the sun and food and fuel from the fields and forests.
False
Kerogen derived from higher plants gets converted to crude oil and natural gas when buried inside the earth for millions of years.
False
Kerogen produced from higher plants gets converted into natural gas.
False
Lifetime predictions for a fossil fuel are done based on available resources.
False
Lignite has higher heating value than Bituminous coal.
False
Lignite is the highest ranked coal.
False
Low and medium rank coals are ranked on the basis of volatile matter content.
False
Low temperature geothermal resources can be used for power generation.
False
Maintenance costs are a large factor of why geothermal is not widely used.
False
Most wind energy is produced in the southeast region of the US.
False
N-type semiconductors have positively charged holes as majority carriers
False
Natural gas has high CO2 emissions compared to coal.
False
Natural gas has low combustion efficiency.
False
Natural gas has the lowest calorific value among all the fossil fuels.
False
Northwestern US is the region most affected region by acid rain.
False
P-type semiconductor have negatively charged electrons as majority carriers
False
Particulates in an electrostatic precipitator get an electric charge and move towards the discharging electrode.
False
Producing energy from wind will become more expensive in the future.
False
Production of bioethanol from corn is more efficient than from sugarcane.
False
Proximate analysis exactly measures the elemental composition of coal.
False
Pumped Storage is non-renewable.
False
Reservoir rock is a rock that produces crude oil.
False
Resources are the quantity of an energy source that is economically recoverable.
False
Steam is a good moderator.
False
The US is the largest producer of hydroelectric energy
False
The United States is the largest exporter of coal.
False
The United States produces most of its bioethanol from sugarcane.
False
The amount of nitrogen in petroleum is more than in coal.
False
The dehydrator removes H2S.
False
Tidal power can be easily harnessed anywhere there is a tide.
False
Transcontinental transportation is done through pipelines.
False
U-238 and Th-232 are fissionable material.
False
United States has large crude oil reserves.
False
United States is the largest producer of energy from biomass consumption
False
Ventilation utilizes radiative heat transfer to promote passive cooling
False
Electric power is measured in terms of voltage.
False, it should be Watts
Natural gas is the most versatile fossil fuel.
False. Petroleum is the most versatile
Kerogen formed from algae or plankton is derived from
Fats, Oils, Waxes
A Nuclear reactor is said to be operating in "subcritical" condition, if
Fission occurs at a decreasing rate
A Nuclear reactor is said to be operating in "supercritical" condition, if
Fission occurs at an increasing rate
A nuclear reactor is said to be operating in "critical" condition, if
Fission occurs at constant rate
Which one of the following combustion process uses limestone?
Fluidized bed combustion
Which light bulb uses mercury vapor?
Fluorescent
In what direction does thermal energy flow?
From high temperature to low temperature
SO2 emissions are primarily due to
Fuel combustion
Which of these have a rotor and stator ?
Generator
Sour natural gas contains
H2S
What type of bulbs are mainly used for security lighting, car headlights and sports events ?
Halogen light bulbs
Which of the following is not used for passive heating and cooling of homes?
Heat exchanger
Refrigerators also known as?
Heat movers
Which is/are major challenges that needs to be overcome to start a nuclear fusion reaction?
Heating the mixture to a very high temperature, Compressing the mixture to a very high density, & Keeping the reaction mixtures together for a considerable amount of time
Which of the following properties is a disadvantage of use of ethanol over gasoline for transportation fuel?
Heating value
Which of the following compound has an octane rating of 0?
Heptane
Which of the following is the reason the fluid "flashes"?
High pressure to low pressure
Nationwide, the biggest energy use in our homes is for
Home heating and cooling
With increase in the rank of coals, which one of the following element's composition decreases?
Hydrogen
Which type of hydroelectric facility is a conventional dam?
Impoundment
Most of the bioethanol produced in United States comes from
Iowa
Which of the following is not true about the Trombe wall?
It is a transparent glass pane
Which of the following is not true about a solar cell
It is cheap
Which of the following is not an advantage of a solar power plant?
It is highly efficient
Which of the following is a unit of energy?
Joules
Which of the following is an energy recovery methodology adopted to process municipal solid waste?
Landfill gas recovery, Combustion and cogeneration, & Pyrolysis
What does a higher octane number signify?
Lesser likelihood of knocking
Which of the following is not true about biodiesel?
Low NOx emissions
Crude oil recovered from deep oil reservoirs tend to have
Low sulfur content
Radioactive decay due to alpha particle emission reduces
Mass number by 4, atomic number by 2
How do you define density?
Mass per unit volume
Methane hydrates are crystallized mounds of
Methane and Water
Coal reserves are measured in
Metric Tons
Which of the following cannot be converted into alcohol or biogas by biological conversion.
Microalgae
Which of the following is true?
Much of the electricity in the US is generated by burning natural gas.
Ground level ozone is formed because of the reaction of hydrocarbon in the presence of sunlight with
NOx
Which pollutant is responsible for the formation of Photochemical smog?
NOx
Which one of the following has the highest heating value per pound?
Natural Gas
In a gas turbine power plant, which fuel is burned to run the turbine?
Natural gas
Which primary energy source contributes the most to home heating requirements?
Natural gas
90% of home heating in this country uses _______ or _______ as the energy sources
Natural gas and electricity
Which of the following is not an advantage of biomass energy?
No NOx emissions
Worldwide, we expect the use of which energy resource to decrease over the next 20 years?
None of the above
Which of these states has the highest wind energy potential?
North Dakota
Where do you think would the heating degree days would be the highest?
North Pole
Which of the following sources of energy is non-renewable?
Nuclear fission
Which among the following reservoirs produce the best crude oil?
Old deep
Which of the following contributes the most towards Municipal solid waste?
Paper and paper board
Which hydrocarbons have straight or branched chains of carbon atoms?
Paraffins
A naturally occuring liquid fossil fuel resource containing a complex mixture of hydrocarbons is called
Petroleum
Which fossil fuel contributes primarily to CO emission?
Petroleum
Which of the following properties are not used in ranking of coal?
Porosity
"My backyard solar collectors produce 350 kWh of electricity in one hour." Am I talking about energy or power?
Power
What happens during compression in a refrigerator?
Pressure increases and Temperature increases
Which of the following is a fissionable isotope made in a breeder reactor?
Pu-239
Which form of hydro power accesses previously used energy?
Pumped storage
How can passive energy be utilized?
Put more windows on the sunny side of the house (south).
Which contributes the most towards human radiation exposure?
Radon
What is the liquid that evaporates inside the refrigerator to "create" the cold temperature?
Refrigerant
Which one of the following regions will have a high CDD or cooling degree days?
Regions with high annual average temperatures.
The quantity of an energy source that is known to exist and that can be economically recovered is called?
Reserve
What does R-Value indicate?
Resistance to heat transfer
Which of the following are examples of baghouse filters?
Reverse-gas, Pulse-jet, & Shake-deflate
Which of the following is not an energy crop?
Rice straw
How is light produced?
Rotation of electrons around the nucleus
Which area of the world has the greatest natural gas reserves?
Russia and Middle East
Which of the following is not an advantage of using Natural Gas for space heating?
Safe to use
Which unconventional gas resource is currently being rapidly exploited in the US?
Shale
The function of a moderator in a nuclear reactor is to
Slow down the neutrons
Which of these cannot increase the efficiency of a wind mill ?
Smaller rotors
What is the hydrologic cycle driven by?
Solar energy
What are the disadvantages of wind?
Storage of energy
In northern hemisphere, house facing south get more solar radiation in winter because
Sun rises in southeast and sets in southwest
Which of the following is a product of thermal conversion of biomass?
Syngas
What recovery method uses steam, chemicals or bugs?
Tertiary
NOx emission from combustion of natural gas is primarily due to
Thermal NOx
What is the energy conversion that takes place in a turbine in a power plant?
Thermal energy to mechanical energy
Which sector of the US economy uses energy the least efficiently?
Transportation
A Cogeneration power plant generates both electric power and useful thermal energy from the same fuel source.
True
A penstock carries water to a turbine.
True
A pressurized water reactor (PWR) uses water under high pressure as the coolant to remove heat generated by a nuclear chain reaction.
True
Active solar heating involves the use of auxiliary power device to take advantage of sun's heat.
True
Addition of ethanol to gasoline reduces the amount of emissions from the fuel.
True
Air or water is pumped to collect and deliver the sun's heat inside the house during the process of active solar heating
True
Amount of CO and particulate matter emissions from biodiesel is less compared to petroleum diesel.
True
Bagasse is an agricultural waste product obtained from sugarcane.
True
Beta decay results in increase of the atomic number by 1.
True
Beta decay results in the conversion of a neutron to proton in the nucleus.
True
Binary Geothermal Power Plants and Flash Steam Power Plants differ in the amounts of emissions they produce.
True
Carbonization is the process of heating coal in the absence of air to produce coke.
True
Central distribution uses coal, nuclear, hydropower or gas powered plants to generate and transmit electricity over long distances.
True
Distributed generation reduces the amount of energy lost in transmitting electricity, as electricity is produced very near to the place where it is used.
True
Economic feasibility and geological assurances are two important variables that differentiate resources and reserves.
True
Electricity produced from a solar power plant can be used to meet peak load power requirements
True
Elements with shorter half-live times are more dangerous because they emit a lot of radiation in a very short period of time.
True
Ethanol has a higher octane number than gasoline.
True
Fossil fuels are formed due to the interruption of the decay process in the carbon cycle.
True
Gamma ray emissions results in no change in mass number and atomic number.
True
Heating value of coal increases with increase in the rank of coal
True
High heating value or gross calorific value is the amount of energy released by complete combustion of 1 lb of fuel.
True
Hydrogen content in petroleum is far greater than in coal.
True
In a pressurized water reactor, the water used in the steam generator never comes in contact with the nuclear reactor.
True
Kerogens are produced from algae, planktons and higher plants with the help of decomposition by bacteria.
True
Large sized coal pieces can be used during the Stoker combustion process.
True
Larger molecules tend to have a higher boiling point.
True
Lignite is the youngest ranked coal.
True
NOx emission is the most difficult primary pollutant to control.
True
Nuclear fusion requires an enormous amount of energy input to bring two positively charged nuclei together.
True
One barrel of oil (42 gallons) produces more than a barrel of products.
True
Particles about the size of wavelength of visible light (0.1 - 1 micron) are responsible for reduced visibility due to significant scattering of light.
True
Particles smaller than 2.5 micrometers are more dangerous for human health as they penetrate deeper into the lungs.
True
Petroleum contains lesser amount of oxygen atoms than coal does.
True
Pour point is the temperature at which the oil starts to flow.
True
Pyrolysis is the process of heating biomass in the absence of air.
True
Recreation is the main purpose of US dams
True
SO2 contributes significantly to particulate emissions.
True
SO2 contributes significantly to the formation of acid rain.
True
Smaller molecules tend to have lower viscosity
True
Solar cells directly converts solar energy into electricity
True
Solar power plant collects and concentrates energy from the sun to generate steam
True
Syngas can be produced from biomass by reaction with steam.
True
The Middle Eastern countries are sitting on major natural gas reserves in addition to all their petroleum.
True
The amount of ash content is an important parameter in determining the quality of biomass fuel
True
The sweetening process removes H2S.
True
There are perhaps 500-1,000 times as much natural gas on Earth as is currently listed as proven reserves.
True
Transesterification is the process used to convert vegetable oil to biodiesel.
True
Viscosity, density and odor are properties that are all related to the geological history of crude oil.
True
Wet natural gas contains other hydrocarbons.
True
When sunlight strikes a solar cell, light of certain wavelength will knock out electrons from semiconductor, thereby producing electric current
True
Which of the following is not radioactive?
U-238
Which country produced the most wind energy in the world in 2008?
US
Which of the following is not a passive solar design for residential heating
Use of fans or pumps to deliver heat
Which of the following radiant energy can be seen by the human eye?
Visible
Electric power is measured as
Voltage multiplied by current
Which of the following media is used in secondary recovery method?
Water
Which of the following is used as moderator in a nuclear power plant?
Water, Deurated water, Graphite
Which of the following is a unit of power?
Watt
Which of the following is the biggest factor in home heating and cooling?
Weather
When is natural gas called 'dry'?
after removal of liquid HCs, after removal of water, or after Sweetening
Which of the following are basic needs of a human being?
air, food, water, shelter
Which of the following is a major disadvantage of using solar energy
backup heating is necessary
Which power plant uses both gas and steam turbine to produce electricity?
combined cycle power plant
What happens to the r-value of the insulation if the thickness increases?
increases
Radioactive decay due to alpha particle emission results in
loss of two protons and two neutrons
