If a satellite in an orbit stops moving, it would
a) escape
b) fall
c) destroy
d) revolve
Explanation: If a satellite in an orbit stops moving, it would fall directly to Earth. But at sufficient speed a satellite would orbit in space around a larger body.
The time period taken by satellite to complete one orbit is called……
a) lapsed time
b) time period
c) sidereal period
d) unit frequency
Explanation: The period is the time it takes for a satellite to complete one orbit. It is also called the sidereal period. A sidereal orbit uses some external fixed or apparently motionless object such as the sun or star for reference in determining a sidereal period.
What is the point on the surface of the earth that is directly below the satellite called?
a) Satellite point
b) sub satellite point
c) super satellite point
d) overhead point
Explanation: The satellite location is specified by a point on the surface of the earth directly below the satellite. This point is known as the sub satellite point (SSP). The sub satellite point is then located by using conventional latitude and longitude designations.
Speed In Circular Orbit Calculation:
In circular orbit a satellite has a constant tangential speed called……………velocity.
a) linear
b) angular
c) constant
d) orbital
To keep satellite revolving in a circular orbit ……..force is provided by gravitational force.
a) centripetal
b) centrifugal
c) angular
d) both a & b
