A satellite revolves around the earth with uniform speed is the motion of the satellite uniform or accelerated?

Accelerated. The concept of "uniform motion" is a mathematical abstraction, like an infinite plane.

ALL mass in the universe is constantly being accelerated by gravitational forces from every other mass in the universe. Specifically, a satellite in orbit is constantly falling toward the Earth under gravity - but because of the inertia of the satellite, it is continually missing the Earth! In the absence of gravity, the satellite would proceed in a straight line tangent to its current elliptical orbit.