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ISRO Refrigeration and Air Conditioning 2015 Official

- 120 GN/m
^{2} - 100 GN/m
^{2} - 200 GN/m
^{2} - 250 GN/m
^{2}

Option 2 : 100 GN/m^{2}

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CT 1: विलोम शब्द

4229

10 Questions
30 Marks
10 Mins

__Concept:__

The relation between E, G, μ, and k will be,

E = 2G (1 + μ),

E = 3K (1 – 2μ)

Where E = Young’s modulus, G = Modulus of rigidity, μ = Poisson ratio, K = Bulk modulus of elasticity.

__Calculation:__

__Given:__

E = 300 GN/m2, G = 150 GN/m2

E = 2G (1 + μ)

300 = 2 × 150 (1 + μ)

μ = 0

E = 3K (1 – 2μ)

\({\rm{K}} = \frac{{\rm{E}}}{{3\left( {1 - 2{\rm{\mu }}} \right)}} = \frac{{300}}{{3\left( {1 - 2 \times 0} \right)}} = 100\;{\bf{GN}}/{{\bf{m}}^2}\)

The bulk modulus will be 100 GN/m2.

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