f = PN/120 where f is frequency of power supply, P is number of poles in the machine and N = speed in rpm. So, Synchronous speed N = 120f/P. Thus for 50 Hz supply, 2 pole machine; synchronous speed = 3000rpm. ETRICAL
Within our solar system quite a bit of exploration has been done by spacecraft including orbiters and landers. Planets outside our solar system will be difficult or impossible to explore with spacecraft in our lifetimes, so astronomers and astrobiologists use other techniques to search for signs of life on these planets. In particular, astronomers are interested in planets within the habitable zone of stars.
Saturn is an outer planet. The inner planets are the terrestrial or rocky planets: Mercury, Venus, Earth and Mars. They are the four planets closer to the Sun, and on the su â¦ nward side of the asteroid belt.The outer planets are Jupiter, Saturn, Uranus and Neptune.They all lie outside the main asteroid belt, which is between Mars and Jupiter.ause the person who found it called it that. and maybe cause it's next to Jupiter and in roman mythology Saturn and Jupiter are the king and queen of the gods Firstly, Saturn â¦ is not the queen of the gods. He is the father of Jupiter. Secondly...well, you're right about the other things.