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RRB JE EC: Communication System Quiz 5
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Question 1
In a satellite communication, the uplink power level is generally high and power level of the received down link signal is low because:
1). High signal attenuation due to free space loss.
2). Limited available down link power.
3). Finite satellite down link antenna gain, which is dictated by the required coverage area.
1). High signal attenuation due to free space loss.
2). Limited available down link power.
3). Finite satellite down link antenna gain, which is dictated by the required coverage area.
Question 2
A satellite link uses different frequencies for receiving and transmitting in order to
Question 3
Which one of the following antenna structures is best for generating a circularly polarized radiation?
Question 4
The frequency range of very high frequency (VHF) is
Question 5
In cellular networks, on similar channels, simultaneous users will result on:
i. Digital Technology
ii. Reuse of frequency
iii. CDMA and TDMA
iv. VLRs and HLR
i. Digital Technology
ii. Reuse of frequency
iii. CDMA and TDMA
iv. VLRs and HLR
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Aug 2ESE & GATE EC
