Which of the following items is used in the household wirings to prevent accidental fire in case of short circuit ?

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Q: 32 (NDA-II/2016)

Which of the following items is used in the household wirings to prevent accidental fire in case of short circuit ?
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question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,10,32,11,7,3,21

keywords: 

{'household wirings': [0, 0, 0, 1], 'wires': [0, 0, 1, 1], 'plastic switches': [0, 0, 0, 1], 'wire': [0, 0, 7, 16], 'electric fuse': [0, 0, 0, 1], 'metallic coatings': [0, 0, 0, 1], 'short circuit': [0, 0, 0, 1], 'accidental fire': [0, 0, 0, 2], 'items': [3, 4, 8, 15]}