Identify the type of joint shown in the picture from the given options.

F2 U.B Madhu 30.01.20 D1

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 1
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  1. Scarfed Joint
  2. Tee Joint
  3. Britannia Joint
  4. Rat Tail Joint

Answer (Detailed Solution Below)

Option 4 : Rat Tail Joint
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Detailed Solution

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Pig Tail:

This joint is also called as Pig-tail/Rat-tail/Twisted joint.

This joint is suitable for pieces where there is no mechanical stress on the conductors, as found in the junction box or conduit accessories box

RRB JE EC  79 11 Q magnetic materials and  Jointing of wires Hindi images madhu and shashi Q9

Married joint:

A married joint is used in places where appreciable electrical conductivity is required, along with compactness.

As the mechanical strength is less, this joint could be used at places where the tensile stress is not too great.

RRB JE EC  79 11 Q magnetic materials and  Jointing of wires Hindi images madhu and shashi Q9a

Britannia joint:

This joint is used in overhead lines where considerable tensile strength is required. It is also used both for inside and outside wiring where single conductors of diameter 4 mm or more are used.

RRB JE EC 79 11 Q magnetic materials and Jointing wires Hindi images madhu and shashi Q10b

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