Question

Question 2 Not yet answered Points out of 10.00 P Flag question A transformer has an incoming service of 7,200 volts. If the primary coil has 75 turns and the secondary coil has 15 turns, what is the outgoing voltage from this transformer? Also, please state if this is a step-up or step-down transformer. FT: BE

Answer 1

since the voltage is decreased from primary to secondary coil the transformer is a step down transformer. I hope it's clear.

Given primary voltage (W) = 7200V N10:0f turns in primary Coil (N1)= 75 NO: 04 turns in secondary Coil(N2) = 15 let Ve be voltage across secondary coll By transformer turn ratio NL = V N2 V2 Vavi -> V2 = N 40*7200 telo idilindo 1440 755 V2 = 1440V NIIN2 Since the voitage is step downed, it's Step-down (decreased) transformer