Satellite Orbits – 1 – 6

26. …. Is India’s first three axis stabilised geostationary communication satellite ?

(a) APPLE
(b) Bhaskara
(c) Rohini
(d) Aryabhatta

ANSWER

EXPLANATION

27. As viewed from space, the average noise temperature of earth is :

(a) 110 K
(b) 254 K
(c) 400 K
(d) 600 K

ANSWER

EXPLANATION

28. The noise temperature of sky is about :

(a) 0 K
(b) 15 K
(c) 30 K
(d) 100 K

ANSWER

EXPLANATION

29. A typical signal strength received from a geosynchronous communication satellite is of the order of a few :

(a) Picowatts
(b) Millwatts
(c) Watts
(d) Kilowatts

ANSWER

EXPLANATION

30. Shanon’s law relates which of the following ?

(a) Noise power to bandwidth
(b) Antenna gain to frequency
(c) Transmission losses to noise
(d) Information carrying capacity to S/N ratio

ANSWER

EXPLANATION

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