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Satellite Orbits – 1 – 5

21. A satellite in low circular orbit than a geostationary orbit is known as :

(a) Passive satellite
(b) Active satellite
(c) Fast moving satellite
(d) slow moving satellite

ANSWER

EXPLANATION

22. What is common between earth and a geostationary satellite :

(a) Both have same linear velocity
(b) Both have same angular velocity
(c) Both have same Kinetic energy
(d) None of the above

ANSWER

EXPLANATION

23. When r is the radius of circular orbit of a satellite, then orbital period of the satellite is proportional to :

(a) r
(b) r^3/2
(c) r^2
(d) r^3

ANSWER

EXPLANATION

24. Geostationary satellites are placed in equatorial orbit at a height of approximately :

(a) 1000 km
(b) 15000 km
(c) 25000 km
(d) 36000 km

ANSWER

EXPLANATION

25. What is the life time of a geosynchronous communication satellite ?

(a) = 2 years
(b) = 5 years
(c) = 10 years
(d) = 40 years

ANSWER

EXPLANATION

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