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.
The largest planet in the solar system is Jupiter, then Saturn, Neptune, Uranus, Earth, Venus, Mars, Mercury, then, the smallest and former planet, Pluto.Jupiter.upiter 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. + 8 others found this useful. Mary Zenter. Prioktan 918. 728,938 Contributions. Law school student at Fordham University.