a
Quiz 2
MAE 301
Spring 2014
_
Print Name
I have neither given nor received unauthorized aid on this test or exam. I have not discussed the
contents of this test or exam prior to taking it. I understand that failure to comply with the
NCSU Honor Pledge wi
Chapter 1 Basic Concepts
The study of thermodynamics is concerned with the ways energy is stored within a body and how energy
transformations, which involve heat and work, may take place.
Classical vs. Statistical thermodynamics
Classical
Statistical
Cons
MAE 301  Thermodynamics I
Fall 2013
North Carolina State University
Department of Mechanical and Aerospace Engineering
Instructor: Prof. Nancy Moore
Office: 3318 Engineering Building 3
Email: [email protected]
Office telephone: 9195133562
Office hours:
Chapter 1 Class Problems
1. Fill in the table with the following properties:
Mass
Extensive
Temperature
Pressure
Volume
Total energy
Color
Age
Intensive
2. Units:
SI (metric) What is the weight of an object at sea level that has a mass of 400
kg?
English
Chapter 3 Class Problems
1. Complete this table for H20.
T, C
P, kPa
h, kJ/kg
200
140
80
x
Phase description
0.7
1800
950
500
800
0.0
3162.2
2. Determine the internal energy of refrigerant134a at a temperature of 0C and
a quality of 60%.
3. Determine the
Chapter 2 Class Problems
1. A fluid contained in a pistoncylinder device receives 500 kJ of electrical work
as the gas expands against the piston and does 600 kJ of boundary work on the
piston. What is the net work done by the fluid?
2. Write the first l
I
Test
Class Review Problems
1. The system is
taken
as

Solutions
the air contained in the pistoncylinder device. This system is a closed or fixed
mass system since no mass enters or leaves it.
2. Yes. lt decreases with increasing pressure and becomes z
Test 1 Class Review Problems
1. What system would you use to analyze how a reciprocating air compressor (a
pistoncylinder device) works?
2. Does hfg change with pressure? How?
3. When is the energy crossing the boundaries of a closed system heat and when