GK
BASIC GENERAL KNOWLEDGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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For safety, the fuse wire used in the mains for household supply of electricity must be made of metal having
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high resistance
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high melting point
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low melting point
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low specific heat
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Explanation:
Detailed explanation-1: -It should have a low melting point. Generally a fuse wire is made from an alloy containing 50% lead and 50% tin. Its melting point around 200°C.
Detailed explanation-2: -The commonly used wire in the fuse is an alloy of tin and lead.
Detailed explanation-3: -A lead and tin alloy with a low melting point is used to make fuse wire.
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