First slide

Electrical machines and devices

Question

In a primary coil 5A current is flowing on 220 volts. In the secondary coil 2200V voltage produces. Then ratio of number of turns in secondary coil and primary coil will be

Moderate

A

1 : 10
B

10 : 1
C

1 : 1
D

11 : 1

Solution

$\frac{N_{s}}{N_{p}} = \frac{V_{s}}{V_{p}} = \frac{2200}{220} = \frac{10}{1}$

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