3.
SOLUTIONS
MAE 105A
Fall 2011
Mid Term No. "1
Two kilograms of an ideal gas mixture (effective Molecular weight = 13.85 and CD = 2.0 kJ/KgK ) are initially
at 200 kPa and 60° C. The gas is first expanded at constant pressure until its volume doubles
MAE 105A Winter 2008 Review for Final Examination
General Information The Final Examination will be given on Friday, March 21, 11:30 am - 2:30 pm, in Kinsey Pavilion 1200B and 1240B, i.e., the class will be split in half as follows: 1200B 1240B An
MAE 105A
Introduction to Engineering Thermodynamics
Winter 2017
TA: Atindra Krishnan, Zhenyu She
Discussion problem set 3
Problem 1
The following table gives data, in kJ, for a system undergoing a power cycle consisting of four
processes in series. Determ
MECHANICAL & AEROSPACE ENGINEERING DEPARTMENT
UNIVERSITY OF CALIFORNIA, LOS ANGELES
MAE 82
MATHEMATICS OF ENGINEERING
WINTER, 2017
INSTRUCTOR
CHATTERJEE, A. K.
MIDTERM EXAMINATION
Closed Book and Closed Notes
February 17, 2017
8-9:50am
INSTRUCTIONS: SHOW
PROBLEM 6.12
PROBLEM 6.27
Nitrogen (N2) undergoes an internally reversible process from 6 bar, 247oC during which pv1.20 =
constant. The initial volume is 0.1 m3 and the work for the process is 121.14 kJ. Assuming ideal
gas behavior, and neglecting kineti
MAE 105A Spring 2014
UCLA
Instructor: Y.F. Tham
Final MAE 105A Spring 2014
1. (15 points total) Conceptual questions:
a. What are the two statements of the 2nd Law of Thermodynamics? (4 points)
b. An inventor claims to have a power cycle that delivers 50
sh is
ar stu
ed d
vi y re
aC s
o
ou urc
rs e
eH w
er as
o.
co
m
Th
https:/www.coursehero.com/file/8259125/MAE-105A-Midterm-1-solns/
sh is
ar stu
ed d
vi y re
aC s
o
ou urc
rs e
eH w
er as
o.
co
m
Th
https:/www.coursehero.com/file/8259125/MAE-105A-Midterm-
MAE 105A Spring 2014
UCLA
Instructor: Y.F. Tham
Name: _
UID: _
Midterm MAE 105A Spring 2014
1. (20 points total) Conceptual questions:
a. What is the 0-th Law of Thermodynamics? (2 points)
b. How does the state principle apply to a simple, compressible sy
MAE 105A Fall 2015
UCLA
Instructor: Y.F. Tham
Name: _
UID: _
Midterm MAE 105A Fall 2015
1. (15 points total) As shown in the figure below, the 0.1 m thick exterior wall of a building
has an average thermal conductivity of 0.72 W/mK. At steady-state, the t
PROBLEM 3.6
Determine the phase or phases in a system consisting of H2O at the following conditions and
sketch the p-v and T-v diagrams showing the location of each state.
(a)
(b)
(c)
(d)
(e)
p = 10 bar, T = 179.9oC
p = 10 bar, T = 150oC
T = 100oC, p = 0.
1.5
Perform the following unit conversions:
(a) 122 in.
3
1 cm 3
(d) 1000
(g) 75
1L
2L
1 kJ
1.0551 kJ
737.56 ft lbf
1 kW
74.57 kW
1.341 hp
lb 1 h
1 kg
kg
0.126
h 3600 s 2.2046 lb
s
(e) 29.392
(f) 2500
3
0.061024 in.3 10 2 cm 10 - 3 m 3
(b) 778.17 ft
Homework 07 Solutions
Problem 6.8
PROBLEM 6.11
PROBLEM 6.27
Nitrogen (N2) undergoes an internally reversible process from 6 bar, 247oC during which pv1.20 =
constant. The initial volume is 0.1 m3 and the work for the process is 121.14 kJ. Assuming ideal
g
Revised 12-14
Homework 8 Solutions
PROBLEM 6.88
An open feedwater heater is a direct-contact heat exchanger used in vapor power plants. Shown
in Fig. P6.88 are operating data for an open heater with H2O as the working fluid operating at
steady state. Igno
PROBLEM 6.149
PROBLEM 3.59
A well-insulated, rigid tank contains 1.5 kg of Refrigerant 134A initially a two-phase liquidvapor mixture with a quality of 60% and a temperature of 0oC. An electrical resistor transfers
energy to the contents of the tank at a
Homework 9 Solutions
PROBLEM 3.69
T2 = 300 oF
PROBLEM 6.172
Steam at 12.0 MPa, 480oC expands through a turbine operating at steady state to 10 bar,
saturated vapor. The process follows pvn = constant and occurs with negligible effects of kinetic
or potent
MAE 105A Final Exam Spring 2015
Thursday, June 11, 2015
8:00 a.m 11:00 a.m.
Boelter Hall 3400
Open book, open notes Instructor:
Mohamed A. Abdou
TAs: Pilbum Kim, Marzieh Mandizadeh
Notes to Students:
1. Blank sheets are provided. Make sure all pages of yo
MAE 105A
Introduction to Engineering Thermodynamics
Winter 2017
TA: Atindra Krishnan, Zhenyu She
Discussion problem set 2
Problem 1 [Problem 2.14]
An object whose mass is 100 lb falls freely under the influence of gravity from an initial elevation of 600
4.96 Figure P4.96 provides steady-state data for a throttling valve in series with a heat
exchanger. Saturated liquid Refrigerant 134a enters the valve at a pressure of 9 bar and is
throttled to a pressure of 2 bar. The refrigerant then enters the heat ex
Problem 6.67
Determine the forces on member ABC.
E
6 kN
1m
C
D
1m
A
B
2m
Solution:
!
!
2m
1m
The frame as a whole: The equations of equilibrium are
FX = AX + EX = 0,
FY = AY + EY 6000 N = 0,
and, with moments about E,
!
ME = 2AX (5)6000 = 0.
Solving for t
PROBLEM 3.63
PROBLEM 3.102
PROBLEM 3.102
PROBLEM 3.112
PROBLEM 3.122
PROBLEM 3.142
PROBLEM 3.142 (CONTINUED)
4.5 Air exits a turbine at 200 kPa and 150oC with a volumetric flow rate of 7000 liters/s.
Modeling air as an ideal gas, determine the mass flow r
Name_
MAE 105A
Introduction to Engineering Thermodynamics
Winter 2016
Problem Set 9
1. Air enters a compressor operating at steady state at 1 bar, 22oC with a volumetric flow rate of
1 m3/min and is compressed to 4 bar, 177oC. The power input is 3.5 kW. E
Name _
SOLUTIONS
MAE 105A
Introduction to Engineering Thermodynamics
Winter 2016
Problem Set 2
1. [Problem 3.43 in MSBB] Using the tables for water, determine the specified property data
at the indicated states. In each case, locate the state on sketches
Name _
SOLUTIONS
MAE 105A
Introduction to Engineering Thermodynamics
Winter 2016
Problem Set 5
1. [Problem 4.96 in MSBB] Figure P4.96 provides steady-state data for a throttling valve in series with
a heat exchanger. Saturated liquid Refrigerant 134a (R-1
Name_
MAE 105A
Introduction to Engineering Thermodynamics
Winter 2016
Problem Set 10
1. [Modified Version of Problem 6.146 in MSBB] Oxygen (O2) at 25oC, 100 kPa enters a
compressor operating at steady state and exits at 260oC, 650 kPa. Stray heat transfer
Name _
MAE 105A
Introduction to Engineering Thermodynamics
Winter 2016
Problem Set 6
1. [Problem 2.85 in MSBB] A concentrating solar collector system, as shown in Fig. P2.85,
provides energy by heat transfer to a power cycle at a rate of 2 MW. The cycle t
Name _
SOLUTIONS
MAE 105A
Introduction to Engineering Thermodynamics
Winter 2016
Problem Set 7 - Revised
1. One (1) kg of water in a piston-cylinder assembly, initially at 160oC, 1.5 bar, undergoes an
isothermal, internally reversible compression process
SOLUTIONS
MAE 105A
Introduction to Engineering Thermodynamics
Winter 2016
Problem Set 1
1. Balloons are sometimes filled with helium gas because it has a mass only about one-seventh
that of air under identical conditions. The buoyancy force, which may be
Name _
MAE 105A
Introduction to Engineering Thermodynamics
Winter 2016
Problem Set 4
1. [Problem 4.9 in MSBB] A 380-L tank contains steam, initially at 400oC, 3 bar. A valve is opened,
and steam flows out of the tank at a constant mass flow rate of 0.005