SSC JE Electrical Engineering 26 Sep 2019 Shift 1 Paper

Question : 168 of 200

Marks: +1, -0

For a three layer stranded wire, the number of strands in first, second and third layer respectively are:

Solution:

No. of layers 'x	Total no. of strands
	N = $3x^2 - 3x + 1$

Hence for three layers, X = 3, therefore no of strands = 19.
Option (c) satisfies the given condition

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