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Draw the construction diagram of clip on meter and state its principle. 
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Construction diagram of clip on meter: 

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A Clamp on meter works on the principle of Faradays laws of electromagnetic induction. When their primary conductor is connected to a.c. supply, a current flows through it. This current flowing through the primary conductor produces an alternating magenetic flux .This flux links with secondary winding through the magenetic core & induces an emf in it according to the faraday’s laws of electromagnetic induction. 

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