Saved Bookmarks
| 1. |
(a) Draw a labelled diagram of a stepup transformer. Obtain the ratio of secondary to primary voltage in terms of number of turns and currents in the two coils. (b) A power transmission line feeds input power at 2200 V to a step-down transformer with its primary windings having 3000 turns. Find the number of turns in the secondary to get the power output at 220 V. |
|
Answer» <P> Solution :(a) N/A(b) Here, `V_(p) = 2200 V, N_(p) = 3000` and `V_(s) = 220 V` `THEREFORE V_(s)/V_(p) = N_(s)/N_(p)` `RARR` Number of turns in the secondary coil `N_(s) = V_(s)/V_(p).N_(p) = (220 xx 3000)/(2200) = 300` |
|