Description : Satellite orbits around the earth are ____ orbits. A. circular B. either elliptical or circular C. elliptical D. circular only
Last Answer : B. either elliptical or circular
Description : The first satellite to receive and transmit simultaneously A. Intelsat I B. Agila I C. Syncorn I D. Telstar I
Last Answer : D. Telstar I
Description : Which of the following is not true for Geostationary Satellite? (1) Its time period is 24 hrs (2) Its angular speed is equal to that of earth about its own axis (3) It is fixed in space (4) It revolves from west to east over the equator
Last Answer : It is fixed in space
Description : For Hydrogen atom, the allowed stationary orbits are those whose orbital angular momentum is equal to an integral multiple of h i.e., mvr = a) nh/2π b) nh x 2π c) nh / 2λ d) nh / 2πλ
Last Answer : a) nh/2π
Description : ___________ is a satellite that rotates around the earth in a low-altitude elliptical or circular pattern. A. Geosynchronous satellite B. Nonsynchronous satellite C. Prograde satellite D. Retrograde satellite
Last Answer : B. Nonsynchronous satellite
Description : What is the approximate percentage of earth coverage of a geostationary satellite at zero degree elevation? A. 33.3% B. 45.2% C. 42.5% D. 30.5%
Last Answer : C. 42.5%
Description : Geostationary stationary satellites are located ___________ with respect to the equator. A. 0˚longitude B. 0˚ latitude C. 90˚latitude D. 45 latitude˚
Last Answer : B. 0˚ latitude
Description : The angular velocity of geo-stationary satellite is • Equal to the angular velocity of earth. • Less than the angular velocity of earth. • More than the angular velocity of earth • None of the above.
Last Answer : The angular velocity of geo-stationary satellite is Equal to the angular velocity of earth.
Description : A satellite orbits the earth 200 km above the surface. What speed, in m/s, is necessary for a circular orbit? The radius of the earth is 6400 km and g = 9.2 m/s2 a.7200 b.6600 c.7800 d.6000 e.107 dynes
Last Answer : c. 7800
Description : A circular orbit around the equator with a 24-h period is called a/an A. elliptical orbit B. geostationary orbit C. polar orbit D. transfer orbit
Last Answer : B. geostationary orbit
Description : When the elevation angle of a geostationary satellite is 23˚ and the transmitting frequency is 3840 MHz, what is the free space loss in dB? A. 196 dB B. 200 dB C. 150 dB D. 100 dB
Last Answer : A. 196 dB
Description : incidentally propose the geostationary scheme or orbit of the satellite in 1940s A. Arthur Clarke B. Carl Friedrich Gauss C. Samuel Morse D. Stephen Gray
Last Answer : A. Arthur Clarke
Description : A satellite which simply reflects the signal without further amplification A. Passive satellite B. Active satellite C. Geostationary satellite D. Domestic satellite
Last Answer : A. Passive satellite
Description : The maximum propagation delay of a geostationary satellite is A. 278 ms B. 239 ms C. 300 ms D. 250 ms
Last Answer : A. 278 ms
Description : What is the minimum propagation delay of a geostationary satellite? A. 278 ms B. 239 ms C. 300 ms D. 600 ms
Last Answer : B. 239 ms
Description : A ground station is operating to a geostationary satellite at a 5° angle of elevation. Calculate the round-trip time between ground station and satellite. A. 275 s B. 275 ms C. 137.5 s D. 137.5 ms
Last Answer : B. 275 ms
Description : In satellite communication, the Geostationary satellites are conveniently located with respect to the equator at _______. A. 45 degrees latitude B. 90 degrees latitude C. 0 degrees latitude D. 5 degrees latitude
Last Answer : C. 0 degrees latitude
Description : The first satellite launched for a geosynchronous orbit but unfortunately lost during orbit injection A. Syncom I B. Telstar I C. Sputnik I D. Early Bird I
Last Answer : A. Syncom I
Description : The first intelsat satellite that was launched in 1965 was named A. Early Bird I B. Echo C. Telstar I D. Courier
Last Answer : A. Early Bird I
Description : What is the first passive satellite transponder? A. Sun B. Early Bird C. Score D. Moon
Last Answer : B. Early Bird
Description : Which of the following is the first commercial satellite? A. Early Bird B. Telstar C. Explorer D. Courier
Last Answer : A. Early Bird
Description : Which of the following is the first active satellite? A. Echo I B. Telstar I C. Early Bird D. Sputnik I
Last Answer : D. Sputnik I
Description : The first passive satellite transponder. A. Early bird B. Score C. Moon D. Sputnik
Last Answer : C. Moon
Description : The first commercial satellite A. Explorer B. Sputnik C. Telstar D. Early bird
Last Answer : D. Early bird
Description : The geostationary satelliteused for communication systems A. rotates with the earth B. remains stationary relative to theearth C. is positioned overequator D. All of theabove E. None of the above
Last Answer : All of theabove
Description : Is the geographical representation of a satellite antenna radiation pattern A. Footprint B. Spot C. Earth D. Region
Last Answer : A. Footprint
Description : Number of satellites in geostationary orbits are A. 100 B. 200 C. 300 D. 400
Last Answer : 200
Description : It is a measure of the microwave power radiated from an antenna as a function of angular direction from the antenna axis. A. Antenna pattern B. Polarization C. Beamwidth D. Sidelobes
Last Answer : C. Beamwidth
Description : In satellite communications, what means of attitude control is using the angular momentum of the spinning body to provide the roll and yaw stabilization? A. Spin stabilization B. Radial stabilization C. Three-axis stabilization D. Station keeping
Last Answer : A. Spin stabilization
Description : How high is the geostationary satellite from the earth? -General Knowledge
Last Answer : 1.2. 1 Geostationary satellites. A geostationary satellite is in an orbit that can only be achieved at an altitude very close to 35,786 km (22,236 miles) and which keeps the satellite fixed ... at the equator. The satellite appears motionless at a fixed position in the sky to ground observers.
Last Answer : A geostationary satellite is in a geostationary orbit, which can only be achieved at an altitude very close to 35,786 km (22,236 m) and keeps the satellite fixed over one longitude at the equator. The satellite appears motionless at a fixed position in the sky to ground observers.
Last Answer : 1.2. 1 Geostationary Satellites. A geostationary satellite is in a geostationary orbit, which can only be achieved at an altitude very close to 35,786 km (22,236 m) and keeps the satellite ... at the equator. The satellite appears motionless at a fixed position in the sky to ground observers.
Description : What is the approximate height of a geostationary satellite from the surface of the earth? (1) 981 km (2) 15000 km (3) 35000 km (4) 55000 km
Last Answer : (3) 35000 km Explanation: A satellite in such an orbit is at an altitude of approximately 35,786 km (22,236 mi) above mean sea level.
Description : A geostationary satellite appears standstill to a viewer on the equator of earth.
Last Answer : Ans: Because the distance remains the same.
Last Answer : Because these satellites are in the geosynchronous orbit (an orbit around the Earth with an orbital period matching the Earth's sidereal rotation period) Geostationary orbit is a type of geosynchronous orbit that is directly above the equator
Description : Geostationary satellite has period A. twice of Earth B. same as Earth C. half of Earth D. quarter of Earth
Last Answer : same as Earth
Description : The altitudinal distance of a geostationary satellite from the earth is about: (A) 26,000 km (B) 30,000 km (C) 36,000 km (D) 44,000 km
Last Answer : Answer: Option C
Description : A geostationary satellite revolves round the earth from (1) East to West (2) West to East (3) North to South (4) South to North
Last Answer : West to East
Description : The smallest beam of a satellite antenna radiation pattern A. Zone beam B. Hemispheric beam C. Spot beam D. Global beam
Last Answer : C. Spot beam
Description : Which of the following refers to the smallest beam of a satellite antenna’s radiation pattern A. Global beam B. Spot beam C. Zone beam D. Hemispheric beam
Last Answer : B. Spot beam
Description : Which of the following refers to the smallest beam of satellite antenna’s radiation pattern? A. Hemispheric beam B. Spot beam C. Zone beam D. Global beam
Description : Footprint refers to coverage area in the globe A. Satellite radiation polarization B. Satellite navigation C. Satellite radiation pattern D. Satellite coverage
Last Answer : C. Satellite radiation pattern
Description : A helical antenna is used for satellite tracking because of ______. A. Broad bandwidth B. Good front-to-back C. Maneuverability D. Circular polarization
Last Answer : D. Circular polarization
Description : A satellite orbits around the earth due to a.Celestial force b.Gravitational force c.Centrifugal force d.Centripetal force e.All of the above
Last Answer : c. Centrifugal force
Description : A satellite of mass m orbits the earth in an elliptical orbit having aphelion distance `r_(a)` and perihelion distance `r_(p)`. The period of the orbi
Last Answer : A satellite of mass m orbits the earth in an elliptical orbit having aphelion distance `r_(a)` and perihelion distance ... r_(p)) sqrt(r_(a)r_(p)))/T`
Description : An artificial satellite is moving in a circular orbit of radius 42.250 km (approx). Calculate its linear velocity if takes 24 hour to revolve around earth.? -Science
Last Answer : Given r =42.250 km , T= 24 hour Linear velocity in circular motion is given by v=2πrT=2×3.14×42.25024=11.05km/hrv=2πrT=2×3.14×42.25024=11.05km/hr
Description : Satellite around Earth follows a circular path because A. gravitational force is parallel to velocity B. gravitational force is anti parallel to velocity C. gravitational force is perpendicular to velocity D. gravitational force is anti perpendicular to
Last Answer : gravitational force is perpendicular to velocity
Description : What is the orbit inclination of geostationary satellites? A. 0° B. 10° C. 20° D. 30°
Last Answer : A. 0°
Description : A single electron orbits around a stationary nucleus of charge `+Ze`, where Z is a constant and e is the electronic charge. It requires `47.2 eV` to e
Last Answer : A single electron orbits around a stationary nucleus of charge `+Ze`, where Z is a constant ... the electron from the first Bohr orbit to infinity.