An impeller (also written as impellor or impellar) is a rotor used to increase (or decrease in case of turbines) the pressure and flow of a fluid. An impeller for a dam turbine generator.
The smallest planet in the Solar System is Mercury (the biggest planet is Jupiter). For the longest time, the smallest planet was considered to be Pluto, but now Pluto isnât a planet any more, so weâre back to Mercury.Mercury measures 4879 km along its equator.Just for comparison, Earth is 12,742 km across.So Mercury is only 38% the diameter of Earth.or the longest time, the smallest planet was considered to be Pluto, but now Pluto isnât a planet any more, so weâre back to Mercury. Mercury measures 4879 km along its equator. Just for comparison, Earth is 12,742 km across.
Jupiter is the largest planet and Mercury is the smallest planet in our solar system. Extra-solar radii extremes would be HAT-P-32b as the largest and Kepler-42d as the small â¦ est.9 people found this useful.ven though it is the smallest planet, Ganymede a moon of Jupiter is larger than Mercury Pluto might have been the smal â¦ lest planet, but it has now been reclassified as a dwarf planet..