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Turns Ratio

The transform...

Question

The transformation ratio of a transformer is 5. If the primary voltage of the transformer is 400 V, 50 Hz, the secondary voltage will be

A

2000 V, 250 Hz

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B

80 V, 50 Hz

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C

80 V, 10 Hz

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D

2000 V, 50 Hz

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Solution

The correct option is D 2000 V, 50 Hz
Transformation ratio $= 5 = \frac{E_{s}}{E_{p}}$
So, $E_{8} = 5 (E P)$
$= 5 (400)$
$= 2000 V$
Frequency does not cange in a transformer so, frequency will be $50 H z .$

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