SSC JE Mechanical Engineering 2017 Set 1 Paper

Question : 190 of 200

Marks: +1, -0

For a thin spherical shell subjected to internal pressure, the radio of volumetric strain to diametrical strain is_____.

Solution:

Volume of sphere is (V)

=π/6d^3

....(i)
Taking differential on both side we get

δ\V=3×π/6d^2δd

Dividing both side equation (i), we get

{δ\V}/\V=3{δd}/d

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