Question

For a satellite to be geostationary, which of the following are essential conditions?

• A. it must always be stationed above the equator
• B. it must be rotate from west to east
• C. it must be about $36,000km$ above the earth surface
• D. it's orbit must be circular, and not elliptical

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A it must always be stationed above the equator
B it must be about $36,000km$ above the earth surface
C it's orbit must be circular, and not elliptical
D it must be rotate from west to east

Geostationary satellites revolve in the equatorial plane.
It has to revolve along Earth's rotation direction that is from west to east.
For the time period to be close to $24$ hours, the height of the satellite has to be $36,000km$ from earth's surface.
And the orbit is circular.
All options.