Communications Engineering Coaching Materials: Section 4 Module 7

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This is the Section 4 Module 7 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 7

highest frequency of IMPATT	30Ghz
thermionic emission	Edison effect
known for its negative resistance	tunnel diode
coined the term robot	Karel Capek
data rate of T1	1.544 Mbps
E-1	32 samples
T-1	24 samples
factor that doesn’t affect the Zo	length
strongest electrolyte	potassium chloride
Wavelength the size of a diameter of an apple is..	microwave
video conferencing international	H 320
video conferencing	H 324
altitude of LEO (Low Earth Orbit)	350km
apogee of the ISS	358km
perigee of the ISS	349km
velocity of ISS	27743.3km/hr
period of ISS	91.3 mins
escape velocity of earth	11.2 km/s
speed moon	2400m/s
waveguide	cobrasi
GPS speed	4.5km/s
no. of rotations per day ISS	15.723
21 satellites	Telstar
ambitious satellite system	telegesic
first transatlantic submarine cable 1888	TAT-8
When was IPv4 depleted?	feb 11, 2011
modulation used by EDGE	8-PSK
modulation used by GSM	GMSK
data rate of AMPS	10Kbps
first communication satellite	early bird (telstar 1)
proposed microwave telecommunications thru satellite	Arthur Clarke
v22	1200kbps
v32	9.6kbps
v34	33.6
v90	56Kbps
year gps	1978
fiber	100 – 1000thz
	.4 -.8 microns
complex 3x	acoustic impedance
room with no echo	anechoic
dolby	1992
tv watching distance	4 – 8 times height
sat com.. video multiplex	qpsk
3g stationary	2mbps
slow pedestrian 3g	384kbps
vehicular 3g	144kbps
Bluetooth	723kbps
h blanking time	10.2micro sec
v blanking time	1333micro sec
pilot frequency FM	19mhz
first voice/audio sat transmission/1st terrestrial communications	score
curie	3.7×10 to
spl	10 to -12 m / -16 cm
properties	gibbs
volume	azamat
local exchange carrier	109
CATV	205
RA 9292	1m plus 6months
secondary emission	high velocity electron on metals
carbon in steel	equal or less than 2%
failure to focus light rays to emit white light	spherical aberration
vidicon dark current	0.2micro amp
lantern battery	2 way portable radio
national building code	1096
ip length	65535
low power twt	1w
max power klystron	10Mw

Complete List of Communications Engineering Coaching Materials

Communications Engineering Coaching Materials

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