00:01
In this situation, we have a transformer that has 12 kilowatts at the primary with a number of coils that we don't not know.
00:08
And they tell us that they're changing the coiling in the secondary.
00:12
The old coiling produced 360 kilobolds, and now there's going to be producing 775 kilobolds.
00:20
So they want to know what the ratio of the new secondary is to the number of terms of the old secondary.
00:27
So the equation for a transformer can be seen right here.
00:33
And so we have that in this case, n2 old over n1 was equal to voltage 2 360 over 12.
00:46
On the other hand, new voltage new, i mean the number of turns 2 over n1 is now 770, 175 divided by the 12.
01:01
So if we want to do the ratio of the new secondary over the old secondary, all we have to do is divide both things.
01:14
And we get 775 over 12 over 360 over 12.
01:21
The 12s cancel out and we get a value of 2 .15 28 terms...