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Given the input current 15 A and input v...

Given the input current 15 A and input voltage of 100 V for a step up transformer having 90% efficiency. Find the output power and voltage in the secondary if output current is 3 A.

Text Solution

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Here, `I_(p) = 15 A, E_(p) = 100 V`,
`eta = 90%, P_(0) = ? E_(s) = ? I_(s) = 3 A`
As `eta = ("Output power")/("Input power") = (E_(s) I_(s))/(E_(p) I_(p))`
`:. (90)/(100) = (E_(s) xx 3)/(100 xx 15) , E_(s) = (90 xx 100 xx 15)/(3 xx 100)`
`= 450 V`
Output power ` = P_(o) = E_(s) I_(s)`
`= 450 xx 3 = 1350 W`
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