EGEE Exam #1, EGEE 101 Midterm (| QUESTIONS
AND ANSWERS | LATEST UPDATE )
Save
Terms in this set (246)
What type of energy would each of A barrel of oil - Chemical energy
the following be?
The sun beating down a solar panel - Thermal
A barrel of oil energy
The sun beating down a solar panel
A piston moving in a car engine A piston moving in a car engine - Mechanical
energy
A steel rod is initially very cold. If it is A) The steel rod heats up.
placed close to a fire, what
happens?
A) The steel rod heats up.
B) The fire goes out.
C) Nothing happens.
,Which do you think is more efficient? A) A jet engine that produces 70 units of work from
100 units of energy.
A) A jet engine that produces 70 units
of work from 100 units of energy.
B) A vehicle that produces 50 units of
work from 100 units of energy.
C) A water mill that produces 10 units
of work from 100 units of energy.
There are a little more than 7.5 billion A) 4x
people on the planet today, but 2.5
billion people are using most of the
energy. The UN projects that human
population will stabilize around 10
billion people by the year 2100 - an
addition of 2.5 billion more people.
How much would energy use
increase by if 10 billion people in 2100
are using the amount of energy 2.5
billion people are using today?
A) 4x
B) 2x
C) 1x
D) 3x
Through a combination of fertility 69.3 years
rate and decreased poverty levels, a
population's energy use is growing t= 0.693/rate = 0.693/0.01 = 69.3 years
exponentially 1% per year. How many
years until the energy use doubles?
, What energy growth rate per year 1.7 per year
would increase world energy use by
400% (2 doubling periods) in 80 t=0.693/rate --> rate=0.693/time
years? rate= 0.693/40 = 1.7% per year
A wind turbine costs $10 million to 10 years
construct and generates $1 million
worth of electricity per year. When
has the wind turbine paid for itself
(what is the pay-back period)?
What do you think "embedded" The energy that goes into making something.
energy is?
What is the biggest use of energy in a heating and air conditioning
home?
Kevin lives next to a power plant that coal
burns coal. He wants to be more
green, so he buys an electric car that
he can plug into his home electricity.
What is powering Kevin's car?
Which has more kinetic energy? D) A car moving at 120 mph across the Bonneville
Salt Flats.
A) An oil tanker moored at a terminal.
B) A cubic mile of water (a lake)
behind a 300 ft tall dam.
C) An atomic bomb in a silo in North
Dakota.
D) A car moving at 120 mph across
the Bonneville Salt Flats.
AND ANSWERS | LATEST UPDATE )
Save
Terms in this set (246)
What type of energy would each of A barrel of oil - Chemical energy
the following be?
The sun beating down a solar panel - Thermal
A barrel of oil energy
The sun beating down a solar panel
A piston moving in a car engine A piston moving in a car engine - Mechanical
energy
A steel rod is initially very cold. If it is A) The steel rod heats up.
placed close to a fire, what
happens?
A) The steel rod heats up.
B) The fire goes out.
C) Nothing happens.
,Which do you think is more efficient? A) A jet engine that produces 70 units of work from
100 units of energy.
A) A jet engine that produces 70 units
of work from 100 units of energy.
B) A vehicle that produces 50 units of
work from 100 units of energy.
C) A water mill that produces 10 units
of work from 100 units of energy.
There are a little more than 7.5 billion A) 4x
people on the planet today, but 2.5
billion people are using most of the
energy. The UN projects that human
population will stabilize around 10
billion people by the year 2100 - an
addition of 2.5 billion more people.
How much would energy use
increase by if 10 billion people in 2100
are using the amount of energy 2.5
billion people are using today?
A) 4x
B) 2x
C) 1x
D) 3x
Through a combination of fertility 69.3 years
rate and decreased poverty levels, a
population's energy use is growing t= 0.693/rate = 0.693/0.01 = 69.3 years
exponentially 1% per year. How many
years until the energy use doubles?
, What energy growth rate per year 1.7 per year
would increase world energy use by
400% (2 doubling periods) in 80 t=0.693/rate --> rate=0.693/time
years? rate= 0.693/40 = 1.7% per year
A wind turbine costs $10 million to 10 years
construct and generates $1 million
worth of electricity per year. When
has the wind turbine paid for itself
(what is the pay-back period)?
What do you think "embedded" The energy that goes into making something.
energy is?
What is the biggest use of energy in a heating and air conditioning
home?
Kevin lives next to a power plant that coal
burns coal. He wants to be more
green, so he buys an electric car that
he can plug into his home electricity.
What is powering Kevin's car?
Which has more kinetic energy? D) A car moving at 120 mph across the Bonneville
Salt Flats.
A) An oil tanker moored at a terminal.
B) A cubic mile of water (a lake)
behind a 300 ft tall dam.
C) An atomic bomb in a silo in North
Dakota.
D) A car moving at 120 mph across
the Bonneville Salt Flats.
