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A laboratory group was working with a set of 3-hp shunt DC motor. But there was a mistake that it was fused with a 0.3A fuse instead 3A fuse. Then it was started _________

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A laboratory group was working with a set of 3-hp shunt DC motor. But there was a mistake that it was fused with a 0.3A fuse instead 3A fuse. Then it was started _________

(a) a flash occurred instantly

(b) it ran for 3s and fuse was blown

(c) it ran normal

(d) none of the mentioned

I got this question by my college professor while I was bunking the class.

Query is from Speed Control of DC Motors in chapter DC Motors of Electrical Machines

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The correct option is (b) it ran for 3s and fuse was blown

To explain I would say: Due to the wrong usage of the fuse wire, it could not sustain the current and in few seconds it was blown off.

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