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EGEE 102 Exam 1
exam 1
38
Electrical Engineering
Undergraduate 1
02/07/2015

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Cards

Term
Energy Can be converted to which of the following?
-Work
-Heat
-Radiation
-All of the above?
Definition
All of the above
Term
Which of the following is a unit of power?
A. Joule
B. BTU/H
C. Watt/ Hour
D. Quad
Definition
BTU/H
Term
One BTU of energy is enough to do what?
A. Heat your room to a comfortable temperature?
B. Heat one pound of water by one degree farenheight
C. Heat one gram of water by one degree celius
D. Heat one gallon of water by one degree Fahrenheit
Definition
Heat one pound of water by one degree farenheight
Term
Nuclear Fusion is a renewable source of energy?
Definition
True
Term
BTU has more energy than a calorie
Definition
True
Term
Energy can be converted from one form to another?
Definition
True
Term
Geothermal heat can be used to produce electricity.
Definition
True
Term
Which of the following are examples of mechanical energy?
A. Sun, flowing water, biomass
B. Wood, flowing water, high pressure steam
C. Flowing water, high pressure steam, fuel oil
D. Wind, Tidal energy, coiled spring
Definition
Wind, Tidal energy, coiled spring
Term
An energy source is non renewable if
Definition
it cannot be regenerated
Term
What are some non-renewable energy sources?
Definition
Nuclear Fission, petroleum
Term
Unit of energy when divided by time of usage gives units of?
A. Power
B. Work
C. Energy
D. Energy * Time
Definition
Power
Term
What percentage of the U.S energy demand is met by renewable energy sources?
A. around 25
B. less than 10
C. Around 50
D. Great than 75
Definition
less than 10%
Term
What percentage of the U.S petroleum demand is met by imports?
A. around 25
B. less than 10
C. Around 50
D. Great than 75
Definition
Around 50%
Term
which fuel supplies the greatest proportion of primary energy in the U.S?
A. Coal
B. Petroleum
C. Natural Gas
D. Nuclear
Definition
Petroluem
Term
At the present rate of consumption how long are the U.S petroleum reserves expected to last?
A. Less than 10 years
B. 200 years
C. 100 years
D. Around 50 years
Definition
less then 10 years
Term
A country in Asia has estimated reserve of 35898 million barrels of oil. The country uses 9947399 barrels of oil per day. At this rate how many years will the reservation last?
Definition
9.89 years
Term
Energy in China is projected to increase at the rate of 3.6% per year for the next few decades. How long will it take for energy consumption in china to double?
Definition
19.44
Term
Energy use in Kunesia is projected to increase at the rate of 2% per year for the next dew decades. How long will it take Kunesia to double its current usage in years?
Definition
35
Term
In the next 20 years it is expected that renewable energy sources will supply more than half of the U.S energy requirements?
Definition
False
Term
to produce one dollar worth of goods and services, the U.S uses less energy than any other country in the world?
Definition
False
Term
The. U.S has highest crude oil reserves in the world?
Definition
False
Term
The fastest growth in the energy use is projected for some of the Asian nations
Definition
True
Term
At the present rate of consumption, reserves for which of the following fuels will last the longest time?
A. Pretroleum
B. Coal
C. Natural Gas
Definition
coal
Term
Resources represent the portion of demonstrated energy resources that
A. Can be recovered economically
B. known to exist,regardless of technical or economic viability
C. can be recovered economically
D. is known to exist or even suspected to exists
Definition
is known to exists, regardless of technical or economic viability
Term
In which of the following regions of the world is the per capita energy consumption the highest in the world?
Definition
North America
Term
which energy source accounts for the greatest proportion of electricity generation in the US?
A. Natural Gas
B. Petroleum
C. Coal
D. Hydro
Definition
coal
Term
What is true about energy conversion devices?
A. - Total Energy input = Energy Output + Energy dissipated to the surroundings
B. total energy input = useful energy output
C. total energy input =energy dissipated to the surroundings
D. Total energy input = efficiceny x total energy output
Definition
- Total Energy input = Energy Output + Energy dissipated to the surroundings?
Term
Which of the following devices is least energy efficient?
A. Power plant
B. Electric Motor
C. Light Bulb
D. Home heating furnace
Definition
Light Bulb
Term
Which is the form of useful energy output in the case of a computer screen?
A. Radiation
B. Mechanical
C. Thermal
D. Chemical
Definition
Radiation
Term
Which is the function of generator in a power plant?
A. Concert chemical to mechanical
B. Mechancial to Electrical
C. Thermal to Mechancial
D. None.
Definition
convert mechanical energy to electrical energy
Term
A turbine is the most efficient use in a power plant? T/F?
Definition
False
Term
Electricity can be generated from fossil fuels?
Definition
True
Term
From a car, useful energy output is mechanical?
Definition
True
Term
An incandescent light bulb has an efficiency of 5%?
Definition
True
Term
Approx. what % of electricity does an incandescent light bulb convert into visible light?
A. 5
B. 20
C. 40
D. 90
Definition
5%
Term
What is the form os useful energy output in the case of a lawn mower?
A. mechanical
b. thermal
C. radiation
D. chemcial
Definition
Mechanical
Term
Normal light bulbs give off much more ___ than fluorescent light bulbs.
A. Light
B. Energy
C. Heat
D. Radiation
Definition
Heat
Term
Carnot efficiency is lowered is we___.
A. Increase Thot
B. Decrease Tcold
C. Decrease Thot
Definition
Decrease Thot
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