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Question

Murray loop test cannot be used to locate

A.

Short circuit fault between conductor and earth 

B.

Short circuit fault between conductors of multi-core cable 

C.

Short circuit between conductors of adjacent single core cable 

D.

Open circuit fault of a conductor

Answer ( Option D)

Open circuit fault of a conductor

Solution

Murray loop test :

1. Murray loop test for location of fault in underground cable.

2. Short circuit fault between conductor and earth.

3. Short circuit fault between conductor of multi core cable.

4. Short circuit between conductor of adjacent single core cable.

So, Open circuit fault of a conductor cannot follow or Murray loop test.

Hence, the correct option is (D).

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