253. A satellite link can be made to carry information when operating digitally whan in analog fashion
A. less
B. more
C. either of the above
D. none of the above

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254. ARQ in the context of error detection in satellite transmission stands for which of the following?
A. Automatic radiation quencling
B. Automatic repeat request
C. Automatic relay request
D. Accelerated recovery request

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255. From which of the rollowing places India's first domestic geostationary satellite INSAT-1A was launched (on 10.4.1982)?
A. UK
B. Bangalore
C. USA
D. USSR

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256. Which of the following is common between earth and a geostationary satellite?
A. same acceleration
B. same velocity
C. same angular velocity
D. same gravitational force

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257. Satellites operate in which of the following frequency ranges?
A. VHF
B. MF
C. VHF and UHF
D.HF

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258. An active satellite has which of the following?
A. Only metallic balloon
B. Antenna system
C. Antenna system, transmitter and receiver
D. Antenna system, transmitter, receiver and power supply [IETE 19981

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259. For satellite communication, the lower limit of frequency is
A. 1 MHz
B. 10 MHz
C. 20 GHz
D. 200 GHz

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