Satellite communications

A satellite is

• a round object that is found in space

• any object in space that moves with a constant speed

• any object that moves around another larger object such as a planet or star

• any man-made object that is launched into space

• any object that is affected by the Earth’s gravitational field

The satellite commonly used for remote sensing and meteorology is

• Geostationary satellite

• Polar satellite

• Ground satellite

• All of the above

• Both A and B

The height of the geostationary satellite above the Earth’s surface is

• 35 930 km

• 45 930 km

• 55 930 km

• 65 930 km

• greater than 65 930 km but less than 95 930 km

What is the source of energy for an artificial satellite?

• Wind

• Hydro

• Solar

• Electrochemical

Communication satellites are placed in

• Polar orbits

• Geostationary orbits

• anyone of the Polar

• on Earth’s surface

A period of a geostationary satellite is

• 8 h

• 12 h

• 24 h

• 36 h

• 48 h

A geostationary satellite rotates

• at any height above the Poles

• at a fixed height

• at the height depending on its mass

• at a height just a few kilometers above the highest mountain peak on Earth

A polar satellite is useful for

• Earth-mapping

• Reconnaissance

• Weather analysis

• Observation of wild animal migration

• all of the above

When a person uses an app in his/her phone for GPS accuracy, it uses

• geostationary satellites

• polar satellites

• Low-Earth-Orbiting (LEO) satellites

• Sun-synchronous satellites

• any of the above

The name of the first artificial satellite of the Earth, which was launched by the Soviet Union ......... -1.