EGEE – Final Exam – Energy and Environmental Engineering – study
material
true or false? most of the energy demand in the US is met by renewable energy sources - ANS
✔✔false
true or false? the US has about 1/3 of the worlds oil reserves - ANS ✔✔false
the US has what percent of the worlds oil - ANS ✔✔2%
true or false? Energy is created when we burn fossil fuels - ANS ✔✔false
true or false? most of the electricity in the US is generated from petroleum - ANS ✔✔false
true or false? petroleum is mainly used for transportation and only a small portion is used for electricity
generation - ANS ✔✔true
energy cannot be created or destroyed, but can be converted from one form to another - ANS
✔✔true
a calorie is a unit of energy - ANS ✔✔true
kwh is the unit of power - ANS ✔✔false
electricity can be generated from fossil fuels - ANS ✔✔true
doubling time is the time in which the original quantity is doubled - ANS ✔✔true
true or false? The US has reserves of coal that would last more than 2 centuries at the current rate of
consumption - ANS ✔✔true
,at the current rate of consumption the current US coal reserves would last for around... yrs - ANS
✔✔232
temp 30 degrees = _____K - ANS ✔✔303
which of the following options only lists non-renewable energy sources - ANS ✔✔nuclear fuel,
petroleum
kilocalorie=______calories - ANS ✔✔1000
approx. what percentage of the US electricity demand is met by renewable energy sources - ANS
✔✔19%
which statement is true about energy conversion efficiency - ANS ✔✔efficiency is the ratio of useful
output to total input
which of the following is true about energy conversion devices? - ANS ✔✔total energy input= useful
energy output+ energy dissipated to the surroundings
from a car, useful energy output is - ANS ✔✔mechanical
in a fossil fuel fired power plant, which form of fuel energy is converted into electrical energy - ANS
✔✔chemical
what is typically true about the relationship between the energy use and gross domestic product - ANS
✔✔GDP is higher in the countries with higher energy use per capita
which one of the following fuel types formed from the remains of terrestrial or aqueous plants millions
of years ago - ANS ✔✔fossil fuels
, if Peter expends 1000 calories running for an hour and Samantha burns 1000 calories riding bike for 45
mins who of the two exerted more power - ANS ✔✔Samantha
power= energy/time
if an appliance has the nominal wattage of 150 W, it means that _________ - ANS ✔✔it uses or
converts 150 J of energy per second
power multiplied by time of usage is equal to - ANS ✔✔total energy used
what original source does the most of energy available on earth come from - ANS ✔✔the Sun
How long would US last on domestic oil reserves, if the reserves are estimated at around 36400 million
barrels, and the rate of consumption is expected to be constant at 8 million barrels per day - ANS
✔✔12.5
what is the form of energy in biomass - ANS ✔✔chemical
the energy in fossil fuels such as petroleum is primarily stored as________- - ANS ✔✔chemical
new breakthrough technology claims its efficiency to be 101% what is your reaction? - ANS ✔✔it is
impossible because of the 1st law
an energy system contains three components in the process, which have efficiencies, respectively: a, b,
c. What would be true about the Toal efficiency, d? - ANS ✔✔d=abc
the reserves to production (r/p) ratio is estimated at 38 for crude oil in North America in 2016. what
does it mean - ANS ✔✔this reserve will last for 38 yrs.
an energy source is non-renewable if - ANS ✔✔it cannot be regenerated effectively within human life
time scale
material
true or false? most of the energy demand in the US is met by renewable energy sources - ANS
✔✔false
true or false? the US has about 1/3 of the worlds oil reserves - ANS ✔✔false
the US has what percent of the worlds oil - ANS ✔✔2%
true or false? Energy is created when we burn fossil fuels - ANS ✔✔false
true or false? most of the electricity in the US is generated from petroleum - ANS ✔✔false
true or false? petroleum is mainly used for transportation and only a small portion is used for electricity
generation - ANS ✔✔true
energy cannot be created or destroyed, but can be converted from one form to another - ANS
✔✔true
a calorie is a unit of energy - ANS ✔✔true
kwh is the unit of power - ANS ✔✔false
electricity can be generated from fossil fuels - ANS ✔✔true
doubling time is the time in which the original quantity is doubled - ANS ✔✔true
true or false? The US has reserves of coal that would last more than 2 centuries at the current rate of
consumption - ANS ✔✔true
,at the current rate of consumption the current US coal reserves would last for around... yrs - ANS
✔✔232
temp 30 degrees = _____K - ANS ✔✔303
which of the following options only lists non-renewable energy sources - ANS ✔✔nuclear fuel,
petroleum
kilocalorie=______calories - ANS ✔✔1000
approx. what percentage of the US electricity demand is met by renewable energy sources - ANS
✔✔19%
which statement is true about energy conversion efficiency - ANS ✔✔efficiency is the ratio of useful
output to total input
which of the following is true about energy conversion devices? - ANS ✔✔total energy input= useful
energy output+ energy dissipated to the surroundings
from a car, useful energy output is - ANS ✔✔mechanical
in a fossil fuel fired power plant, which form of fuel energy is converted into electrical energy - ANS
✔✔chemical
what is typically true about the relationship between the energy use and gross domestic product - ANS
✔✔GDP is higher in the countries with higher energy use per capita
which one of the following fuel types formed from the remains of terrestrial or aqueous plants millions
of years ago - ANS ✔✔fossil fuels
, if Peter expends 1000 calories running for an hour and Samantha burns 1000 calories riding bike for 45
mins who of the two exerted more power - ANS ✔✔Samantha
power= energy/time
if an appliance has the nominal wattage of 150 W, it means that _________ - ANS ✔✔it uses or
converts 150 J of energy per second
power multiplied by time of usage is equal to - ANS ✔✔total energy used
what original source does the most of energy available on earth come from - ANS ✔✔the Sun
How long would US last on domestic oil reserves, if the reserves are estimated at around 36400 million
barrels, and the rate of consumption is expected to be constant at 8 million barrels per day - ANS
✔✔12.5
what is the form of energy in biomass - ANS ✔✔chemical
the energy in fossil fuels such as petroleum is primarily stored as________- - ANS ✔✔chemical
new breakthrough technology claims its efficiency to be 101% what is your reaction? - ANS ✔✔it is
impossible because of the 1st law
an energy system contains three components in the process, which have efficiencies, respectively: a, b,
c. What would be true about the Toal efficiency, d? - ANS ✔✔d=abc
the reserves to production (r/p) ratio is estimated at 38 for crude oil in North America in 2016. what
does it mean - ANS ✔✔this reserve will last for 38 yrs.
an energy source is non-renewable if - ANS ✔✔it cannot be regenerated effectively within human life
time scale
