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Fundamentals of Engineering Thermodynamics Chapter 2 Terms Questions and Answers
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Fundamentals of Engineering Thermodynamics Chapter 2 Terms
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Fundamentals of EngineeringThermodynamics Chapter 2 Terms
Sign Conventions - answerUnlike in Thermochemistry, everything that happens on the
outside is considered positive. Work > 0 - WORK DONE BY THE SYSTEM ON THE
SURROUNDINGS
Work < 0 - WORK DONE BY THE SURROUNDINGS ON THE SYSTEM
Internal Energy - answerExtensive Property - Depends on how big the system is.
Associated with the makeup of the system, including its chemical composition.
*ONLY CHANGE REALLY MATTERS*
Work - answerEnergy that is transferred to and from closed systems . Example - *When
a gas in a closed vessel is stirred, energy is transferred to the gas by work* **WORK IS
NOT A PROCESS**
Compression - answerWhen volume decreases due to pressure increasing. NEGATIVE
WORK
Isobaric (constant pressure process) Process - answerWhen the y coordinate is not
changing, resulting in a horizontal line for the pressure vs. volume graph. p*V^0 = C
THEREFORE p=c , resulting in a
Constant pressure process, also known as an _________ process
Isothermal (Constant Temperature) Process - answerFor the pressure vs. volume
graph,
p*V^1 = C, so
PV = C ---> Rearranging we have P = C/V, and if C = nRT as in gas law, this results in a
Constant temperature process, also known as an _______ process
Isoentropic (Constant Entropy) Process - answerFor the pressure vs. volume graph,
N = k, so
P*V^k = C, so the ratio of specific heats results in a constant entropy process, known
also as an ___________ process
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