A transformer having 1000 primary turns is connected to a 250-V a.c. supply. For a secondary voltage of 400 V, the number of secondary turns should be......a.250b.400c.1250d.1600
Added by Frank G.
Step 1
The formula is given by the turns ratio, which states that the ratio of primary voltage (Vp) to secondary voltage (Vs) is equal to the ratio of primary turns (Np) to secondary turns (Ns): \[ \frac{Vp}{Vs} = \frac{Np}{Ns} \] Show more…
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