First slide

Electrical machines and devices

Question

In a step up transformer, 220 V is converted into 2200 V. The number of turns in primary coil is 600. What is the number of turns in the secondary coil

Moderate

A

60
B

600
C

6000
D

100

Solution

$\frac{N_{s}}{N_{p}} = \frac{V_{s}}{V_{p}} \Rightarrow \frac{N_{s}}{600} = \frac{2200}{220} \Rightarrow N_{s} = 6000$

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