A fuse is used in main electric supply as a safety device. Which one of the following statements about the fuse is correct?

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Q: 108 (IAS/1998)
A fuse is used in main electric supply as a safety device.
Which one of the following statements about the fuse is correct?
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question_subject: 

Science

question_exam: 

IAS

stats: 

0,43,26,13,3,43,10

keywords: 

{'fuse': [0, 1, 0, 1], 'main electric supply': [0, 1, 0, 0], 'main switch': [0, 1, 0, 0], 'safety device': [0, 1, 0, 0], 'low melting point': [0, 1, 1, 3], 'high resistance': [0, 1, 1, 0], 'silver alloys': [0, 1, 0, 0], 'parallel': [0, 1, 3, 5]}