electrical vs computer engineering salary
A STUDY ON DIFFICULTIES IN READING ENGLISH FOR ELECTRICAL AND ELECTRONICS ENGINEERING AT VINH TECHNICAL TEACHERS’ TRAINING UNIVERSITY
Ngày tải lên :
29/01/2014, 10:33
... recently. ESP at VTTTU includes “English for Technical
Engineering , “English for Electrical and Electronics Engineering and “English for Computer
Science”.
The ESP textbooks were designed with ... secondary school teachers in four major fields: Mechanical Engineering, Mechanical
Dynamic Engineering, Electrical and Electronics Engineering and Information Technology.
The students are provided ... Aims of the study
The study aims to examine the difficulties in reading English for Electrical and
Electronics Engineering of the second year students at VTTTU.
of the paragraph they have...
- 35
- 1.1K
- 1
Báo cáo khoa học: "Electrical and Computer" docx
Ngày tải lên :
17/03/2014, 07:20
... Markov Model for Part-of-Speech
Tagging
Scott M.
Thede and Mary P. Harper
School of Electrical and Computer Engineering, Purdue University
West Lafayette, IN 47907
{ thede, harper} @ecn.purdue.edu...
- 8
- 295
- 0
electrical power cable engineering (1)
Ngày tải lên :
21/03/2014, 12:09
... withstand high, continuous operathg
temperatures, etc.
Impregnated
paper
insulation
has
excellent electrical properties, such as
high
dielectric strength, low dissipation factor, and dielectric ... triggered a dramatic change
in
the
insulation
of
cables
for
the transmission and distribution of electrical energy.
There are
two
major
types
of
extruded dielectric insulation
in
wide
use ...
had a
very
high
“average” molecular weight. The higher the
molecular weight, the better the electrical properties. The highest
molecular
weight PE that could
be
readily
extruded
was...
- 11
- 456
- 0
electrical power cable engineering (2)
Ngày tải lên :
21/03/2014, 12:09
...
voltage
(5
kV to
46
kV)
shielded cable appears
to
be
a
relatively
simple
electrical
machine.
It
does
electrical
work
but
there
are
no
parts
that
move, at
least
no
discernible ...
class
notes for “Power Cable Engineering
Clinic,”
University
of Wisconsin
Madison,
1992.
[2-21
Landinger, Carl, adapted from
class
notes for “Power Cable Engineering
Clinic,” University ...
terminations, and fill
of
conduits.
5.1.3
Electrical Insulation (Dielectric).
This
provides dicient separation
between the conductor and the nearest electrical ground to preclude dielectric...
- 11
- 407
- 0
electrical power cable engineering (3)
Ngày tải lên :
21/03/2014, 12:09
... of course,
are
specified for the same reason for
#2/0
AWG aluminum and smaller cables.)
7.
ELECTRICAL CALCULATIONS
7.1
Conductor dc Resistance
Rdcat25'C
=
l000p/A
(3.3)
where ...
Sodium
Nickel
1.
INTRODUCTION
4.3
25.87
7.8 46.9
The fundamental concern of power cable engineering is to transmit current
(power) economically and efficiently. The choice of the conductor ...
standard unit must be established for measuring
con-
ductor sizes. In the United States and Canada, electrical conductors are sized us-
ing the American Wire Gauge (AWG) system. This system
is
based...
- 15
- 318
- 0
electrical power cable engineering (4)
Ngày tải lên :
21/03/2014, 12:09
... voltage of the surge on which
breakdown occurs.
3.
REVIEW
OF
ELECTRICAL ENGINEERING TERMS
These terms apply to all electrical engineering circuits. The actual application
of these terms
to ... proportional to the
rate of change
of
the magnetic flux that links it. The inductance of
an
electrical
circuit consisting of parallel conductors, such as a single-phase concentric neu-
tral ... 2.6
Cable Inductive Reactance
The inductive reactance of
an
electrical circuit is based on Faraday's law. That
law states that the induced voltage appearing...
- 16
- 1.2K
- 0
electrical power cable engineering (5)
Ngày tải lên :
21/03/2014, 12:09
... voltage
stress
Crosslinked polyethylene
Slightly higher losses
vs.
PE
Ages
better
than
PE
EPR
/
EPDM
PVC
Higher losses vs. XLPE
or
PE
More
flexible
than
XLPE
or
PE
Requires ... portions that are not aligned will coil. The
chain portions that are aligned are said to be crvstalline. The chain portions not
aligned are said to be morphous.
Figure
5-5
shows chains alignment ...
industry specifications) is later cooled down, the crystalline regions will reform.
The physical and electrical properties will now improve. There are fine
differences
in
the nature of the newly...
- 27
- 368
- 0
electrical power cable engineering (6)
Ngày tải lên :
21/03/2014, 12:09
...
we
shall
review
how these
factors
influence
the
electrical properties. The
emphasis
shall
be
on
polyolefins.
Low
stress
electrical properties
are
determined by the polar
nature ...
failure. These trees have a different shape for electrical
trees,
and also have
different cause. The differences are outlined below.
WATER
TREES
ELECTRICAL
TREES
Water required Water not ...
Dissado and
J.
C.
Fothergill, Electrical Degredation and Break-
down
in
Polymers,”
G.
C.
Stevens, Editor, Peter Peregrinus Ltd., 1992.
[6-21 Ken Mathes, Electrical Insulating Materials.”...
- 14
- 268
- 0
electrical power cable engineering (7)
Ngày tải lên :
21/03/2014, 12:09
... result of a magnetic field coupling between
circuits.
This
is a bit more complex
than
for electrical effects.
At
relatively
low
frequencies, the energy emitted from the source is treated ...
unshielded circuit
Test circuits to measwe the effectiveness of various shielding designs against
electrical field effects and magnetic field effects have been reported by Gooding
and Slade.
105 ... a problem.
In numerous communication, instrumentation, and control cable applications,
small electrical
signals
may be transmitted on the cable conductor and amplified
104
Copyright © 1999...
- 6
- 359
- 0
electrical power cable engineering (8)
Ngày tải lên :
21/03/2014, 12:09
... as either
an
insulation or a jacketing material. By
use
of compounding
techniques, a good electrical insulation can be developed with good moisture
resistance properties.
Also,
a jacketing ... should
be
used
for nonmetallic coverings on the outer portions
of a cable.
They
serve as electrical and mechanical protection for the underlying
cable materials.
There are
many
materials ... Rubber
EPR
is
frequently used
as
an insulating material because of its balance
of
outstanding electrical properties.
They
can
also
be
used
for jackets, especially
in
low
temperature...
- 9
- 308
- 0
electrical power cable engineering (9)
Ngày tải lên :
21/03/2014, 12:09
... values:
Phvsical Requirements
Unaned
Tensile strength, psi, minimum at room temperature, EPR
1
EPR
2
EPR
3
Elongation, percent, minimum at room temperature,
all
three
Phvsical and Electrical ...
Physical and Electrical Reuuirements
Aged
After Air Oven Test for
168
hours at
121
OC
Tensile strength,
%
of unaged, minimum
Elongation,
%
of
unaged,
minimum
75
75
Electrical ... States by various industry organizations
since
the early
part
of
the
twentieth century.
Electrical
cables
are
manufactured to these requirements
depending
on
the application
of...
- 12
- 391
- 0