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UPRVUNL JE EE 2015 Official Paper

Option 1 : 25/7

ST 1: General Knowledge

5609

20 Questions
20 Marks
20 Mins

**Representation of ACSR Conductor:**

A standard conductor is represented as A/S/D for ACSR conductor.

Where,

A is the number of aluminum strands.

S is the number of steel strands.

D is the diameter of each strand.

**Example:** If the ACSR conductor having 7 steel strands surrounded by 25 aluminum conductors will be specified as **25/7**.

__Additional Information__

**Calculation of the number of strands in a stranded conductor:**

If there are ‘n’ layers of strands in a stranded conductor.

Number of strands of the conductor = 3n^{2} - 3n + 1

**Calculation of overall diameter of a stranded conductor:**

If d mm is the diameter of a single strand in the conductor.

The overall diameter of the conductor = (2n +1) d unit