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Question

Alternating current is converted to direct current by
rectifier
dynamo
transformer
motor

A

rectifier

B

transformer

C

dynamo

D

motor

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Solution

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A rectifier is a device which converts a.c (alternating current) to d.c( direct current), which flows in only one direction. This process is known as Rectification.

This is done using p-n junction diode.

A p-n junction diode allows electric current in only forward bias condition and blocks electric current in revere bias conditions.
In other words, a diode allows electric current in one direction. This unique property of diode allows it to act like a Rectifier.

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