Communications Engineering Coaching Materials: Section 4 Module 8

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This is the Section 4 Module 8 of the compiled Communications Coaching Materials taken from various sources including but not limited to past Board Examination Questions in Electronic System and Technologies (EST), Communications Books, Journals and other Communications References. This particular Coaching Notes in Communications Engineering has random Questions and Answers in random topics. Make sure to familiarize each questions to increase the chance of passing the ECE Board Exam.

Communications Engineering Coaching: Section 4 Module 8

true 3G	UMTS
blue laser	5 times faster than infrared
most accurate	BPRZ
less dispersion window 3	1550nm
western Europe	pal b/g
Europe digital	DBV-T
d2	SMPT 244
cassegrain	elliptical
trap	more than 1 freq… LC
pillbox	sandwich
do 88	3W fm
do 88	1W am
firewire	IEEE 1394
ATM	53 byte
decay time picture tube	5ms
100ire	pure white
0 IRE	blanking lvl
vertical lines	42
42bis "bis"	encore
laser	2nm
led	30nm
damage the living tissue	shorter wavelength
green LED	940nm
damage the cornea	longer wavelength
average loss in optical fiber	.15dB
humming code	4 info 3 correction
SUF per MHz	500k
bit error rate sat comm	1 in 10³
rule of thumb obstruction	40 %
rotating (robot)	revolute
shielded metal arc welding	SMAW
gas metal arc welding	GMAW
metal inert gas	MIG
commercial robot	pleo
weld interval	5
squeeze	1 sec
hold	1 sec
weld	1 ~ 10 sec
pentode with sharp pulses… free running..	phantastron
sony’s robot	qrio
solid object	6 dof
scara	4 dof
cellular service	1984
ip was created	1981
aperture settings for camera lenz	f stop
single copper wire SHDSL	2.3Mbps
iridium sat	80km
no of mastergroup in jumbogroup	6
human hearing	a weighted
telephony	c weighted
commercial	18mins
news	30mins
2400bps modem class 4	2900bps
epitaxially green	4
more rugged cable	10k N
lightweight	100N
large core diameter	200micro
DVC error correction	reed solomon
high end	D1
high sensitivity	PMT
bit software	j. tukey
PCM	alec reeves
stacked collinear antenna.. half wave dipoles spaced 1/2 wavelengths	broadside array
internal processing speed of 2nd gen computers	millionths of a second
internal processing speed of 3rd gen computers	billionths of a second
pleasing to the eye print of all printers	daisy wheel
height of GPS
accuracy of GPS for civilian	100m
accuracy of GPS for military	16m
sonnet sts-1	51.84
10 lux	1 foot candle
core diameter of step index multi-mode..	0.2 angstrom
luminance Y combination	30% red, 59% green, 11% blue
"try" to send at baseband network cable	contention
"sending" at baseband network cable	collision
dvd laser diodes wavelength	650nm
short term frequency deviation in FM broadcasting	residual FM
GPS orbital period	12 hrs
location of a satellite	ephemeris
is-95	9.6kbps
cutoff wavelength of single mode fiber	1100 – 1280
efficiency of a class 4 modem	120.. %
HDTV aspect ratio	16;9
mpeg 4 uses what format	DivX
gain of an isotropic antenna	1.66
cordless phones beyond 300ft uses how much power	10w
citizen frequency band	26.965 – 27. 405 MHz
fastest optical receiver	apd
allows tel to talk to computers connected to internet	H 323
4 wire gigabit Ethernet	1000base T
determine the direction of a sound source	precedence effect
intended to be the 4th generation in cellular communications	ultra mobile broadband (UMB)
a model of diffuse reflection	lambertian reflection
method used to increase antenna gain and directivity	antenna stacking
4b/5b encoding	block coding
IF
AM	455khz
FM	10.7mhz
video	45.25mhz
sound	41.25mhz
radar	30mhz

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Communications Engineering Coaching Materials

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