First slide

Electrical machines and devices

Question

The turn ratio of a transformers is given as 2 : 3. If the current through the primary coil is 3 A, thus calculate the current through load resistance

Moderate

A

1 A
B

4.5 A
C

2 A
D

1. 5 A

Solution

$\frac{N_{s}}{N_{P}} = \frac{I_{P}}{I_{S}} \frac{2}{3} = \frac{3}{I_{S}} \Rightarrow I_{s} = 4.5 A$

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