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.
Jupiter is an outer planet-it is outside the orbit of Earth. Inner planets: Mercury Venus -------- EARTH -------- Outer planets: Mars Jupiter Saturn Neptun â¦ e Uranus Jupiter is an outer planet like the other gas giants Saturn, Uranus, and Neptune.3 people found this useful.arth is an inner planet. The inner planets are Mercury, Venus, Earth, and Mars. The outer planets are Jupiter, Saturn, Uranus, and Neptune.