Question

A 3-phase bridge rectifier charges a 240 V battery. The rectifier is given a 3-phase, 230 V supply. The current limiting resistance in series with the battery is of 8 Ω. Find the average value of battery charging current.

Answer 1

Answer:

given =  potiantial = 240V

             rectifire  3-phase , 230volt

             battery = 8Ω

to find = average current = I = ?

solution,

the net emf =  240 - 230 =10 V  

charging current ,

I = net  emf / resistance =   10 /  8 =  1.25 A

so the avarage value of battery charging current is 0.25A