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QUESTION:

Geostationary satellites are located at ____ with respect to the equator.

Choices:

a. 00longitude b. 00latitude c. 450longitude d. 900latitude

ANSWER:B. 00latitude

QUESTION:

The quality of a space-lin is !easured in ter!s of the ______ ratio.

Choices:

a. "#$ b. G#T c. %#$ d. &'()

ANSWER:B. G#T

QUESTION:

*hy does the downlin frequency appear to +ary by se+eral , during a

low earth orbit satellite pass

Choices:

a. The distance between the satellite and ground station is changing/causing the epler effect

b. The distance between the satellite and ground station is changing/causing the Bernoulli effect

c. The distance between the satellite and ground station is changing/causing the Boyle1s 2aw effect

d. The distance between the satellite and ground station is changing/

causing the 3oppler effectANSWER:3. The distance between the satellite and ground station is changing/causing the 3oppler effect

QUESTION:

The !ost a!bitious 2& constellation to date is ______.

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Choices:

a. 'ridiu!

b. $6"T(

c. Teledesic

d. Globalstar

ANSWER:%. Teledesic

QUESTION: satellite-dish owner has a 7 !eter dish designed for %-band 84 G,operation. The owner wants to use the sa!e dish with a new feedhorn/ foru-band 8:; G, satellites. *hat effect will the change in frequency ha+e

on the gain and bea!width of the antenna

Choices:

a. Gain increases by 9.54 dB/ bea!width decreases to :#7 of its for!er

+alue.

b. Gain decreases by 9.54 dB/ bea!width decreases to :#7 of its for!er

+alue.

c. Gain increases by 9.54 dB/ bea!width increases to thrice of its for!er

+alue.

d. Gain decreases by 9.54 dB/ bea!width increases to thrice of itsfor!er +alue.

ANSWER:. Gain increases by 9.54 dB/ bea!width decreases to :#7 of its for!er+alue.

QUESTION:The !oon orbits the earth with a period of appro! b. 7=; >! c. 7=4 >! d. 7=? >!

ANSWER:c. 7=4 >!

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SOLUTION ( IF PROBLEM -SOLVING)

QUESTION:

*hat is the length of the path to a geostationary satellite fro! an &arthstation if the angle of ele+ation is 700

Choices:

a. ?400 ! b. 79000 ! c. 4;400 ! d. 4?000 !

ANSWER:B. 79000 !

SOLUTION ( IF PROBLEM -SOLVING)

QUESTION:

*hat is the no!inal uplin frequency for the u band

Choices:

a. ? G,

b. 4 G,c. :4 G,

d. :; G,

ANSWER:%. :4 G,

QUESTION:

To co+er all inhabited regions of the earth/ the nu!ber of polar-orbitsatellites required is

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Choices:

a. : b. ; c. 7 d. 5

ANSWER:

. :