Satellite communication Model Exam PART-A (09.04.2021)

The transmitter-receiver combination in the satellite is known as a _______

• Relay
• Repeater
• Transponder
• Duplexer

The downlink frequency is lower than the uplink frequency.

• true
• false

What is the angle of inclination for a satellite following an equatorial orbit?

•  0°
• 45°
• 90°
• 180°

A geosynchronous satellite

• has the same period a that of the Earth
• has a circular orbit
• rotates in the equatorial plane
• has all of the above

INTELSAT stands for ………….

• Intel Satellite
• International Telephone Satellite
• International Telecommunications Satellite
• International Satellite

Which law states that for equal time intervals, the satellite will sweep out equal areas in its orbital plane, focused at the barycenter.

• Newton’s 1st law
• kepler’s first law
• kepler’s second law
• kepler’s third law

The number of days when Earth’s shadow falls on a geosynchronous satellite is

• 88
• 277
•  5
•  10

 A helical antenna is used for satellite tracking because of …………..

•  Circular polarization
• Maneuverability
• Beamwidth
• Gain

A geostationary satellite is one which

• hangs motionless in space about 36000 km about Earth
•  travels around the Earth in 24 hours
• remains stationary above the Earth
• appears stationary to everybody on Earth

Power received from Sun per m2 surface area of a geosynchronous satellite in nearly…………. watt.

• 100
• 500
• 2000
• 1000