A step-up transformer is operated on a 2.5 kV line

cbse
alternating-currents

#1

A step-up transformer is operated on a 2.5 kV line. It supplies a load with 20 A. The ratio of the primary winding to the secondary is 10 : 1. If the transformer is 90% efficient, calculate
(i) the power output
(ii) the voltage and
(iii) the current in the secondary


#2

Given,input voltage, ${ V }{ P }$ = 2.5 x ${{10}^{3}}$ V
Input current ${ I }
{ P }$ = 20A