Exam (elaborations)
EGEE 401 - Exam 1 Questions and Answers
- Course
- Institution
Exam of 7 pages for the course EGEE at EGEE (EGEE 401 - Exam 1)
[Show more]
Content preview
EGEE 401 - Exam 1Nuclear fusion is a renewable source of energy. (T/F) - answerTrue
One calorie is defined as the amount of energy that is required to raise the temperature
of _____. - answer1 g of water by 1ºC.
nergy can be converted to which of the following?
Work
Heat
Radiation
All of the above
None of the above - answerAll of the above
Which one of the following is a unit of power?
Joule
Btu/h
Watt/hour
Quad - answerBtu/h
Power is the rate at which energy is consumed. When we say rate, we mean per unit
time, so BTU/h is a unit of power. Since, Watt is a unit of power, Watt divided by hour is
neither a unit of power not energy.
One BTU of energy is enough to do what? - answerHeat one pound of water by one
degree Fahrenheit.
A 100 watt incandescent light bulb is operated for 120 hours, and a 15 watt LED light
bulb is operated for the same period of time. At 10 cents per kWh, what is the cost
savings of the LED bulb? - answer$1.02
Energy = Power x duration, 100W x 120h = 12,000Wh = 12 kWh 15W x 120h =1,800
Wh = 1.8 kWh Energy savings is the difference (12-1.8) kWh = 10.2 kWh; at the rate of
10 cents per kWh this amounts to $1.02
Energy can be converted from one form to another. (T/F) - answerTrue
Energy cannot be created or destroyed but it can be converted from one form to
another.
A BTU has more energy than a calorie.(T/F) - answerTrue
, A BTU is the amount of heat required to heat 1 lb (454 grams) of water through 1°F.
Whereas 1 calorie is the amount of heat required to raise 1 g of water through 1°C.
Therefore there is more energy in one BTU.
The energy possessed by a ball thrown by a quarterback is of the form -
answerMechanical
Energy from the Sun is coming to the earth in the form of - answerRadiation
An Electric Bulb rated at 60W is used for 10 hours. How much energy is burned? -
answer600Wh
Which consumes the least amount of energy per day?
Eating your recommended amount of Calories
Driving a car 18 miles
Heating a house in the U.S.
Powering a 100 W lightbulb for 24 hours - answerEating your recommended amount of
Calories
Which energy source accounts for the greatest proportion of electricity generation in the
US?
Natural Gas
Petroleum
Coal
Hydro - answerNatural Gas
In 2015, the share of electricity net generation provided by natural gas exceeded that of
coal.
To produce one dollar worth of goods and services, the U.S. uses less energy than any
other country in the world. (T/F) - answerFalse
To produce one dollar worth of goods and services, Japan uses less energy than any
other developed country in the world. Refer to Section 2.2 Global Energy Consumption
and GDP per person graph.
At the present rate of consumption, reserves for which one of the following fuels will last
the longest time?
Petroleum
Coal
Natural Gas - answerCoal
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78252 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now