71. There is (are) . . . . . . . . orbit(s) for a GEO satellite.
72. INTELSAT stands for
73. 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
74. A satellite link has same carrier to noise ratio in uplink as well as in downlink. Overall carrier to noise ratio will be-
75. The angle of inclination of a satellite whose orbit is over the equator is
76. Which one of the following techniques is not suitable for automatic satellite tracking?
77. A geostationary satellite
78. Diplexer is made of
79. Doubling the aperture area of a radar's antenna increases the radar range by
80. The signal is sent back to earth by satellite by means of
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