SSC JE Electrical Engineering 2012 Paper

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Question : 157 of 200

Marks: +1, -0

In AC operated electromechanical contactors, the problem of chattering is eliminated by

Increasing the conductor cross-section
Using aluminum instead of copper as conductor material
Laminating the electromagnet core placing copper shading band on pole face of electromagnet
Placing copper shading band on pole face of electromagnet

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