Question

an iron ring having a crosssectional area of 10mmsquare and mean diameter of 8cm has a saw cut of 0.5mm if relative permeability of iron used is 1200 and number of turns in the winding made on the ring is 1000 calculate the current through winding to set up a flux of 3mwb

Answer 1

Answer:

A ring has a mean diameter of 21 cm and cross sectional area of 10 cm2. the ring is made up of semi-circular sections of cast iron and cast steel with each joint having reluctance equal to an air gap of 0.2 mm. find the ampere turns required to produce a flux of 0.8 milli-wb. the relative permeability of cast steel and cast iron are 800 & 166 respectively. neglect fringing and leakage effects.